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</a></div></div></div></div><div class="right-panel-container"><div class="user-content-wrapper"><div class="uploads-container" id="social-redesign-work-container"><div class="upload-header"><h2 class="ds2-5-heading-sans-serif-xs">Uploads</h2></div><div class="documents-container backbone-social-profile-documents" style="width: 100%;"><div class="u-taCenter"></div><div class="profile--tab_content_container js-tab-pane tab-pane active" id="all"><div class="profile--tab_heading_container js-section-heading" data-section="Papers" id="Papers"><h3 class="profile--tab_heading_container">Papers by andres barbosa</h3></div><div class="js-work-strip profile--work_container" data-work-id="102304129"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304129/Differences_in_daily_mass_gain_between_subordinate_species_are_explained_by_differences_in_ecological_plasticity"><img alt="Research paper thumbnail of Differences in daily mass gain between subordinate species are explained by differences in ecological plasticity" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304129/Differences_in_daily_mass_gain_between_subordinate_species_are_explained_by_differences_in_ecological_plasticity">Differences in daily mass gain between subordinate species are explained by differences in ecological plasticity</a></div><div class="wp-workCard_item"><span>脡coscience</span><span>, 2001</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to co...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to combat harsh environmental conditions and the drastic reduction in predictability of resource access. High fat reserves provide some benefits related to starvation-risk reduction, but also imply some costs related to increased predation risk. In general, subordinate species should increase their level of fat reserves in response to the unpredictability of resource access when in competition with dominants. However, the magnitude of such reserve increases could differ between subordinate species if opportunity of access to resources varies interspecifically in relation to differences in niche breadth due to differences in morphology. We tested the hypothesis that subordinate species (Parus cristatus) with decreased access to food will accumulate more fat than subordinate species (Parus ater) with greater opportunities. Results supported the prediction. We found that crested tit, the species with lower ecological plasticity and thus less access to food under competition, stores more fat daily than the coal tit, the species with higher ecological plasticity owing to its ability to forage while upside down.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304129"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304129"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304129; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304129]").text(description); $(".js-view-count[data-work-id=102304129]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304129; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304129']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304129, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=102304129]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304129,"title":"Differences in daily mass gain between subordinate species are explained by differences in ecological plasticity","translated_title":"","metadata":{"abstract":"ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to combat harsh environmental conditions and the drastic reduction in predictability of resource access. 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We found that crested tit, the species with lower ecological plasticity and thus less access to food under competition, stores more fat daily than the coal tit, the species with higher ecological plasticity owing to its ability to forage while upside down.","publisher":"Informa UK Limited","publication_date":{"day":null,"month":null,"year":2001,"errors":{}},"publication_name":"脡coscience"},"translated_abstract":"ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to combat harsh environmental conditions and the drastic reduction in predictability of resource access. High fat reserves provide some benefits related to starvation-risk reduction, but also imply some costs related to increased predation risk. In general, subordinate species should increase their level of fat reserves in response to the unpredictability of resource access when in competition with dominants. However, the magnitude of such reserve increases could differ between subordinate species if opportunity of access to resources varies interspecifically in relation to differences in niche breadth due to differences in morphology. We tested the hypothesis that subordinate species (Parus cristatus) with decreased access to food will accumulate more fat than subordinate species (Parus ater) with greater opportunities. Results supported the prediction. We found that crested tit, the species with lower ecological plasticity and thus less access to food under competition, stores more fat daily than the coal tit, the species with higher ecological plasticity owing to its ability to forage while upside down.","internal_url":"https://www.academia.edu/102304129/Differences_in_daily_mass_gain_between_subordinate_species_are_explained_by_differences_in_ecological_plasticity","translated_internal_url":"","created_at":"2023-05-24T12:03:53.183-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"Differences_in_daily_mass_gain_between_subordinate_species_are_explained_by_differences_in_ecological_plasticity","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to combat harsh environmental conditions and the drastic reduction in predictability of resource access. High fat reserves provide some benefits related to starvation-risk reduction, but also imply some costs related to increased predation risk. In general, subordinate species should increase their level of fat reserves in response to the unpredictability of resource access when in competition with dominants. However, the magnitude of such reserve increases could differ between subordinate species if opportunity of access to resources varies interspecifically in relation to differences in niche breadth due to differences in morphology. We tested the hypothesis that subordinate species (Parus cristatus) with decreased access to food will accumulate more fat than subordinate species (Parus ater) with greater opportunities. Results supported the prediction. We found that crested tit, the species with lower ecological plasticity and thus less access to food under competition, stores more fat daily than the coal tit, the species with higher ecological plasticity owing to its ability to forage while upside down.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[],"research_interests":[{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology"},{"id":192581,"name":"Food Availability","url":"https://www.academia.edu/Documents/in/Food_Availability"},{"id":564878,"name":"Body Weight","url":"https://www.academia.edu/Documents/in/Body_Weight"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304128"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304128/Morphological_molecular_and_phylogenetic_analyses_of_the_spirurid_nematode_Stegophorus_macronectes_Johnston_and_Mawson_1942_"><img alt="Research paper thumbnail of Morphological, molecular and phylogenetic analyses of the spirurid nematode Stegophorus macronectes (Johnston & Mawson, 1942)" class="work-thumbnail" src="https://attachments.academia-assets.com/102608199/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304128/Morphological_molecular_and_phylogenetic_analyses_of_the_spirurid_nematode_Stegophorus_macronectes_Johnston_and_Mawson_1942_">Morphological, molecular and phylogenetic analyses of the spirurid nematode Stegophorus macronectes (Johnston & Mawson, 1942)</a></div><div class="wp-workCard_item"><span>Journal of helminthology</span><span>, Jan 14, 2015</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Stegophorus macronectes (Johnston & Mawson, 1942) is a gastrointestinal parasite found in Antarct...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Stegophorus macronectes (Johnston & Mawson, 1942) is a gastrointestinal parasite found in Antarctic seabirds. The original description of the species, which was based only on females, is poor and fragmented with some unclear diagnostic characters. This study provides new morphometric and molecular data on this previously poorly described parasite. Nuclear rDNA sequences (18S, 5.8S, 28S and internal transcribed spacer (ITS) regions) were isolated from S. macronectes specimens collected from the chinstrap penguin Pygoscelis antarctica Forster on Deception Island, Antarctica. Using 18S rDNA sequences, phylogenetic analyses (maximum likelihood, maximum parsimony and Bayesian inference) of the order Spirurida were performed to determine the phylogenetic location of this species. Primer pairs of the ITS regions were designed for genus-level identification of specimens, regardless of their cycle, as an alternative to coprological methods. The utility of this molecular method for identifica...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="99fd26adee82333dfbf0249ca83d9765" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608199,"asset_id":102304128,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608199/download_file?st=MTczNDAzNDkzNiw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304128"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304128"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304128; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304128]").text(description); $(".js-view-count[data-work-id=102304128]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304128; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304128']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304128, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "99fd26adee82333dfbf0249ca83d9765" } } $('.js-work-strip[data-work-id=102304128]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304128,"title":"Morphological, molecular and phylogenetic analyses of the spirurid nematode Stegophorus macronectes (Johnston \u0026 Mawson, 1942)","translated_title":"","metadata":{"abstract":"Stegophorus macronectes (Johnston \u0026 Mawson, 1942) is a gastrointestinal parasite found in Antarctic seabirds. 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The utility of this molecular method for identifica...","internal_url":"https://www.academia.edu/102304128/Morphological_molecular_and_phylogenetic_analyses_of_the_spirurid_nematode_Stegophorus_macronectes_Johnston_and_Mawson_1942_","translated_internal_url":"","created_at":"2023-05-24T12:03:50.515-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608199,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608199/thumbnails/1.jpg","file_name":"s0022149x1500021820230524-1-qvgx0t.pdf","download_url":"https://www.academia.edu/attachments/102608199/download_file?st=MTczNDAzNDkzNiw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Morphological_molecular_and_phylogenetic.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608199/s0022149x1500021820230524-1-qvgx0t-libre.pdf?1684956976=\u0026response-content-disposition=attachment%3B+filename%3DMorphological_molecular_and_phylogenetic.pdf\u0026Expires=1734038536\u0026Signature=HpFAmcbRZUe4612bI7s-0c~~sVCd0dGgibP4trgZvKv3g03usxlK8T7A5P8aj63vAz7TnMZNlrXg8xOtKhSj2e7p8IMHksFUSkvOE7PX4YPcoU9PxJd-y26~milT639rbnsSKoyWeg46FOtoo6sIa5YXiipQoKorp6rz4F5ncYlb3kZc2QFQmw5hfNonajFtr4noPW~fhST2NMN9wlmFmNUEh8WaipkmCLxdLmqmxuel6Cd-uXG4rTS2W0XNE~fZlzim7oevZe4CLSwGGuU-nrPIXXjQ2AKppXCkEmBOis7cWIXDFzRp1mHeSRCwdSGD63OEii9bt0-U~1L4HsrZiQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Morphological_molecular_and_phylogenetic_analyses_of_the_spirurid_nematode_Stegophorus_macronectes_Johnston_and_Mawson_1942_","translated_slug":"","page_count":9,"language":"en","content_type":"Work","summary":"Stegophorus macronectes (Johnston \u0026 Mawson, 1942) is a gastrointestinal parasite found in Antarctic seabirds. The original description of the species, which was based only on females, is poor and fragmented with some unclear diagnostic characters. This study provides new morphometric and molecular data on this previously poorly described parasite. Nuclear rDNA sequences (18S, 5.8S, 28S and internal transcribed spacer (ITS) regions) were isolated from S. macronectes specimens collected from the chinstrap penguin Pygoscelis antarctica Forster on Deception Island, Antarctica. Using 18S rDNA sequences, phylogenetic analyses (maximum likelihood, maximum parsimony and Bayesian inference) of the order Spirurida were performed to determine the phylogenetic location of this species. Primer pairs of the ITS regions were designed for genus-level identification of specimens, regardless of their cycle, as an alternative to coprological methods. The utility of this molecular method for identifica...","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608199,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608199/thumbnails/1.jpg","file_name":"s0022149x1500021820230524-1-qvgx0t.pdf","download_url":"https://www.academia.edu/attachments/102608199/download_file?st=MTczNDAzNDkzNiw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Morphological_molecular_and_phylogenetic.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608199/s0022149x1500021820230524-1-qvgx0t-libre.pdf?1684956976=\u0026response-content-disposition=attachment%3B+filename%3DMorphological_molecular_and_phylogenetic.pdf\u0026Expires=1734038536\u0026Signature=HpFAmcbRZUe4612bI7s-0c~~sVCd0dGgibP4trgZvKv3g03usxlK8T7A5P8aj63vAz7TnMZNlrXg8xOtKhSj2e7p8IMHksFUSkvOE7PX4YPcoU9PxJd-y26~milT639rbnsSKoyWeg46FOtoo6sIa5YXiipQoKorp6rz4F5ncYlb3kZc2QFQmw5hfNonajFtr4noPW~fhST2NMN9wlmFmNUEh8WaipkmCLxdLmqmxuel6Cd-uXG4rTS2W0XNE~fZlzim7oevZe4CLSwGGuU-nrPIXXjQ2AKppXCkEmBOis7cWIXDFzRp1mHeSRCwdSGD63OEii9bt0-U~1L4HsrZiQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":159,"name":"Microbiology","url":"https://www.academia.edu/Documents/in/Microbiology"},{"id":4207,"name":"Phylogenetics","url":"https://www.academia.edu/Documents/in/Phylogenetics"},{"id":6947,"name":"Medical Microbiology","url":"https://www.academia.edu/Documents/in/Medical_Microbiology"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine"},{"id":30217,"name":"Penguins","url":"https://www.academia.edu/Documents/in/Penguins"},{"id":54433,"name":"Phylogeny","url":"https://www.academia.edu/Documents/in/Phylogeny"},{"id":57487,"name":"Antarctica","url":"https://www.academia.edu/Documents/in/Antarctica"},{"id":89621,"name":"Helminthology","url":"https://www.academia.edu/Documents/in/Helminthology"},{"id":273728,"name":"Ciencias Biol贸gicas","url":"https://www.academia.edu/Documents/in/Ciencias_Biol%C3%B3gicas"},{"id":550697,"name":"Phylogenetic Tree","url":"https://www.academia.edu/Documents/in/Phylogenetic_Tree"},{"id":644860,"name":"Veterinary Sciences","url":"https://www.academia.edu/Documents/in/Veterinary_Sciences"},{"id":702183,"name":"Maximum Parsimony","url":"https://www.academia.edu/Documents/in/Maximum_Parsimony"},{"id":973347,"name":"Ribosomal DNA","url":"https://www.academia.edu/Documents/in/Ribosomal_DNA"},{"id":1454485,"name":"Spheniscidae","url":"https://www.academia.edu/Documents/in/Spheniscidae"},{"id":3693954,"name":"Internal transcribed spacer","url":"https://www.academia.edu/Documents/in/Internal_transcribed_spacer"},{"id":3880895,"name":"Bird diseases","url":"https://www.academia.edu/Documents/in/Bird_diseases"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304127"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304127/Sex_differences_in_the_T_cell_mediated_immune_response_in_wintering_great_tits_Parus_major"><img alt="Research paper thumbnail of Sex differences in the T-cell-mediated immune response in wintering great tits Parus major" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304127/Sex_differences_in_the_T_cell_mediated_immune_response_in_wintering_great_tits_Parus_major">Sex differences in the T-cell-mediated immune response in wintering great tits Parus major</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">ABSTRACT Although sex differences in immune response have been reported in domestic animals, in w...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">ABSTRACT Although sex differences in immune response have been reported in domestic animals, in which females generally show greater immune responses than males, studies of such differences in wild organisms including birds are still scarce. Most such studies of immune responses in wild birds have been carried out on nestlings and breeding adults, while few have reported on immune responses in wintering birds. Here, we report sex differences in the cellmediated immune response assessed by the phytohaemagglutinin injection assay in a population of great tits Parus major during winter. Females showed higher level of immune response than males. As far as we know this is the first time that cell-mediated immune response has been reported in wintering birds.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304127"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304127"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304127; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304127]").text(description); $(".js-view-count[data-work-id=102304127]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304127; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304127']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304127, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=102304127]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304127,"title":"Sex differences in the T-cell-mediated immune response in wintering great tits Parus major","translated_title":"","metadata":{"abstract":"ABSTRACT Although sex differences in immune response have been reported in domestic animals, in which females generally show greater immune responses than males, studies of such differences in wild organisms including birds are still scarce. Most such studies of immune responses in wild birds have been carried out on nestlings and breeding adults, while few have reported on immune responses in wintering birds. Here, we report sex differences in the cellmediated immune response assessed by the phytohaemagglutinin injection assay in a population of great tits Parus major during winter. Females showed higher level of immune response than males. As far as we know this is the first time that cell-mediated immune response has been reported in wintering birds."},"translated_abstract":"ABSTRACT Although sex differences in immune response have been reported in domestic animals, in which females generally show greater immune responses than males, studies of such differences in wild organisms including birds are still scarce. Most such studies of immune responses in wild birds have been carried out on nestlings and breeding adults, while few have reported on immune responses in wintering birds. Here, we report sex differences in the cellmediated immune response assessed by the phytohaemagglutinin injection assay in a population of great tits Parus major during winter. Females showed higher level of immune response than males. As far as we know this is the first time that cell-mediated immune response has been reported in wintering birds.","internal_url":"https://www.academia.edu/102304127/Sex_differences_in_the_T_cell_mediated_immune_response_in_wintering_great_tits_Parus_major","translated_internal_url":"","created_at":"2023-05-24T12:03:50.349-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"Sex_differences_in_the_T_cell_mediated_immune_response_in_wintering_great_tits_Parus_major","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"ABSTRACT Although sex differences in immune response have been reported in domestic animals, in which females generally show greater immune responses than males, studies of such differences in wild organisms including birds are still scarce. Most such studies of immune responses in wild birds have been carried out on nestlings and breeding adults, while few have reported on immune responses in wintering birds. Here, we report sex differences in the cellmediated immune response assessed by the phytohaemagglutinin injection assay in a population of great tits Parus major during winter. Females showed higher level of immune response than males. As far as we know this is the first time that cell-mediated immune response has been reported in wintering birds.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[],"research_interests":[{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":292936,"name":"Parus","url":"https://www.academia.edu/Documents/in/Parus"},{"id":324154,"name":"Immune system","url":"https://www.academia.edu/Documents/in/Immune_system"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304126"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304126/Trace_and_toxic_elements_in_three_species_of_Antarctic_penguins_A_preliminary_research"><img alt="Research paper thumbnail of Trace and toxic elements in three species of Antarctic penguins: A preliminary research" class="work-thumbnail" src="https://attachments.academia-assets.com/102608192/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304126/Trace_and_toxic_elements_in_three_species_of_Antarctic_penguins_A_preliminary_research">Trace and toxic elements in three species of Antarctic penguins: A preliminary research</a></div><div class="wp-workCard_item"><span>Toxicology Letters</span><span>, 2008</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">tar albino rats and mice were used to assess sub-acute and acute toxicity respectively. For the a...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">tar albino rats and mice were used to assess sub-acute and acute toxicity respectively. For the acute toxicity on mice we used increasing (0.6; 1.3; 2.5; 5; 10 g/kg) oral doses of dry extract dissolved in 1 ml of water for B. pilosa and R. vomitoria while the two F. macrophylla extracts were dissolved in 1 ml of corn oil. This experiment lasted 14 days during which mice had 1 ml of the daily dose. Control group received water only. The animals had regular supply of food and water. The method described by Miller and Tainter (1944) was used to determine the DL50. For the sub acute toxicity, rats were given daily for 28 days oral doses of 0.3, 0.6 and 1.3 g/kg extract of R. vomitoria and F. macrophylla extracts; extract of B. pilosa were given at the daily dose of 1.3, 2.5 and 5 g/kg. The animals had regular supply of food and water too. At the end of the experiment the animals were sacrificed after an overnight fast. Blood was collected for hematological and biochemical analysis. Liver and kidney were removed from each rat for histopatholgical examinations (Gabe, 1968). Results: Acute toxicity showed that B. pilosa was less toxic. R. vomitoria and F. macrophylla (stem bark and root bark) had a DL50 of 2.87 and 3.1 respectively. F. macrophylla roots decreased significantly red blood cells and white blood cells counts. R. vomitoria seemed to increase blood cholesterol. B. pilosa and F. macrophylla roots at the higher doses was hyperglycemic. The activities of all the enzymes used as markers of liver cytolysis increased showing a side effect of these plants on the liver. The concentrations of kidney markers like creatinin and urea did not change. Histopathological examinations of the liver and the kidney confirmed the hepatotoxicity of the extracts and reveal some histological change on the kidney. Conclusion: This study showed that these medicinal plants can be dangerous if used intensively and for a long time by traditional healers.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="24f2cb243c990b22e1ffebb15cbae589" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608192,"asset_id":102304126,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608192/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304126"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304126"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304126; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304126]").text(description); $(".js-view-count[data-work-id=102304126]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304126; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304126']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304126, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "24f2cb243c990b22e1ffebb15cbae589" } } $('.js-work-strip[data-work-id=102304126]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304126,"title":"Trace and toxic elements in three species of Antarctic penguins: A preliminary research","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"tar albino rats and mice were used to assess sub-acute and acute toxicity respectively. For the acute toxicity on mice we used increasing (0.6; 1.3; 2.5; 5; 10 g/kg) oral doses of dry extract dissolved in 1 ml of water for B. pilosa and R. vomitoria while the two F. macrophylla extracts were dissolved in 1 ml of corn oil. This experiment lasted 14 days during which mice had 1 ml of the daily dose. Control group received water only. The animals had regular supply of food and water. The method described by Miller and Tainter (1944) was used to determine the DL50. For the sub acute toxicity, rats were given daily for 28 days oral doses of 0.3, 0.6 and 1.3 g/kg extract of R. vomitoria and F. macrophylla extracts; extract of B. pilosa were given at the daily dose of 1.3, 2.5 and 5 g/kg. The animals had regular supply of food and water too. At the end of the experiment the animals were sacrificed after an overnight fast. Blood was collected for hematological and biochemical analysis. Liver and kidney were removed from each rat for histopatholgical examinations (Gabe, 1968). Results: Acute toxicity showed that B. pilosa was less toxic. R. vomitoria and F. macrophylla (stem bark and root bark) had a DL50 of 2.87 and 3.1 respectively. F. macrophylla roots decreased significantly red blood cells and white blood cells counts. R. vomitoria seemed to increase blood cholesterol. B. pilosa and F. macrophylla roots at the higher doses was hyperglycemic. The activities of all the enzymes used as markers of liver cytolysis increased showing a side effect of these plants on the liver. The concentrations of kidney markers like creatinin and urea did not change. Histopathological examinations of the liver and the kidney confirmed the hepatotoxicity of the extracts and reveal some histological change on the kidney. Conclusion: This study showed that these medicinal plants can be dangerous if used intensively and for a long time by traditional healers.","publication_date":{"day":null,"month":null,"year":2008,"errors":{}},"publication_name":"Toxicology Letters","grobid_abstract_attachment_id":102608192},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304126/Trace_and_toxic_elements_in_three_species_of_Antarctic_penguins_A_preliminary_research","translated_internal_url":"","created_at":"2023-05-24T12:03:49.800-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608192,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608192/thumbnails/1.jpg","file_name":"j.toxlet.2008.06.18220230524-1-jzi6bk.pdf","download_url":"https://www.academia.edu/attachments/102608192/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Trace_and_toxic_elements_in_three_specie.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608192/j.toxlet.2008.06.18220230524-1-jzi6bk-libre.pdf?1684956975=\u0026response-content-disposition=attachment%3B+filename%3DTrace_and_toxic_elements_in_three_specie.pdf\u0026Expires=1734038537\u0026Signature=P3OBaDSPNeTzWeyoZQpHI2IUrCYVejbGj5txb3rsLFfwyW0YHmLkxRj2H~58NB~XZOPCtAtwgdRtRN1FrPe-f1Z5DRfLZi96AXV3FtSeM1YifU95Fi3bQBHyASrmpe7ka7f08XZhm-HBKLMSFQlq6cc3aw-Z5R3nhOsraNesRvMNgJGRVtHV1qwXYGVTpPpi9uAZO0LYOVqPG44llxYup8fFVAO3vwluCUL-mZMOs3vwlJjYRidmn1mxbdPjNpm5G2RZ1dwPYHSZFoLlUQNEbFcKULVXzGPl9UJJSzskgvQ3eZ1kzY7Er1YXL7COZ077fk2vyGcMNm9kY95uvCuliQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Trace_and_toxic_elements_in_three_species_of_Antarctic_penguins_A_preliminary_research","translated_slug":"","page_count":1,"language":"en","content_type":"Work","summary":"tar albino rats and mice were used to assess sub-acute and acute toxicity respectively. For the acute toxicity on mice we used increasing (0.6; 1.3; 2.5; 5; 10 g/kg) oral doses of dry extract dissolved in 1 ml of water for B. pilosa and R. vomitoria while the two F. macrophylla extracts were dissolved in 1 ml of corn oil. This experiment lasted 14 days during which mice had 1 ml of the daily dose. Control group received water only. The animals had regular supply of food and water. The method described by Miller and Tainter (1944) was used to determine the DL50. For the sub acute toxicity, rats were given daily for 28 days oral doses of 0.3, 0.6 and 1.3 g/kg extract of R. vomitoria and F. macrophylla extracts; extract of B. pilosa were given at the daily dose of 1.3, 2.5 and 5 g/kg. The animals had regular supply of food and water too. At the end of the experiment the animals were sacrificed after an overnight fast. Blood was collected for hematological and biochemical analysis. Liver and kidney were removed from each rat for histopatholgical examinations (Gabe, 1968). Results: Acute toxicity showed that B. pilosa was less toxic. R. vomitoria and F. macrophylla (stem bark and root bark) had a DL50 of 2.87 and 3.1 respectively. F. macrophylla roots decreased significantly red blood cells and white blood cells counts. R. vomitoria seemed to increase blood cholesterol. B. pilosa and F. macrophylla roots at the higher doses was hyperglycemic. The activities of all the enzymes used as markers of liver cytolysis increased showing a side effect of these plants on the liver. The concentrations of kidney markers like creatinin and urea did not change. Histopathological examinations of the liver and the kidney confirmed the hepatotoxicity of the extracts and reveal some histological change on the kidney. Conclusion: This study showed that these medicinal plants can be dangerous if used intensively and for a long time by traditional healers.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608192,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608192/thumbnails/1.jpg","file_name":"j.toxlet.2008.06.18220230524-1-jzi6bk.pdf","download_url":"https://www.academia.edu/attachments/102608192/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Trace_and_toxic_elements_in_three_specie.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608192/j.toxlet.2008.06.18220230524-1-jzi6bk-libre.pdf?1684956975=\u0026response-content-disposition=attachment%3B+filename%3DTrace_and_toxic_elements_in_three_specie.pdf\u0026Expires=1734038537\u0026Signature=P3OBaDSPNeTzWeyoZQpHI2IUrCYVejbGj5txb3rsLFfwyW0YHmLkxRj2H~58NB~XZOPCtAtwgdRtRN1FrPe-f1Z5DRfLZi96AXV3FtSeM1YifU95Fi3bQBHyASrmpe7ka7f08XZhm-HBKLMSFQlq6cc3aw-Z5R3nhOsraNesRvMNgJGRVtHV1qwXYGVTpPpi9uAZO0LYOVqPG44llxYup8fFVAO3vwluCUL-mZMOs3vwlJjYRidmn1mxbdPjNpm5G2RZ1dwPYHSZFoLlUQNEbFcKULVXzGPl9UJJSzskgvQ3eZ1kzY7Er1YXL7COZ077fk2vyGcMNm9kY95uvCuliQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":402,"name":"Environmental Science","url":"https://www.academia.edu/Documents/in/Environmental_Science"},{"id":15836,"name":"Environmental Chemistry","url":"https://www.academia.edu/Documents/in/Environmental_Chemistry"},{"id":1957240,"name":"ENVIRONMENTAL SCIENCE AND MANAGEMENT","url":"https://www.academia.edu/Documents/in/ENVIRONMENTAL_SCIENCE_AND_MANAGEMENT"},{"id":3789884,"name":"Pharmacology and pharmaceutical sciences","url":"https://www.academia.edu/Documents/in/Pharmacology_and_pharmaceutical_sciences"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304125"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304125/The_Effect_of_Copper_on_the_Color_of_Shrimps_Redder_Is_Not_Always_Healthier"><img alt="Research paper thumbnail of The Effect of Copper on the Color of Shrimps: Redder Is Not Always Healthier" class="work-thumbnail" src="https://attachments.academia-assets.com/102608198/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304125/The_Effect_of_Copper_on_the_Color_of_Shrimps_Redder_Is_Not_Always_Healthier">The Effect of Copper on the Color of Shrimps: Redder Is Not Always Healthier</a></div><div class="wp-workCard_item"><span>PLoS ONE</span><span>, 2014</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The objective of this research is to test the effects of copper on the color of pacific white shr...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The objective of this research is to test the effects of copper on the color of pacific white shrimp (Litopenaeus vannamei) in vivo. Forty-eight shrimps (L. vannamei) were exposed to a low concentration of copper (1 mg/L; experimental treatment) and forty-eight shrimps were used as controls (no copper added to the water). As a result of this experiment, it was found that shrimps with more copper are significantly redder than those designated as controls (hue (500-700 nm) : P = 0.0015; red chroma (625-700 nm) : P,0.0001). These results indicate that redder color may result from exposure to copper and challenge the commonly held view that highly pigmented shrimps are healthier than pale shrimps.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="ea73a4499e970bcdfa6ccf4a52e16cd3" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608198,"asset_id":102304125,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608198/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304125"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304125"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304125; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304125]").text(description); $(".js-view-count[data-work-id=102304125]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304125; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304125']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304125, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "ea73a4499e970bcdfa6ccf4a52e16cd3" } } $('.js-work-strip[data-work-id=102304125]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304125,"title":"The Effect of Copper on the Color of Shrimps: Redder Is Not Always Healthier","translated_title":"","metadata":{"publisher":"Public Library of Science (PLoS)","grobid_abstract":"The objective of this research is to test the effects of copper on the color of pacific white shrimp (Litopenaeus vannamei) in vivo. Forty-eight shrimps (L. vannamei) were exposed to a low concentration of copper (1 mg/L; experimental treatment) and forty-eight shrimps were used as controls (no copper added to the water). As a result of this experiment, it was found that shrimps with more copper are significantly redder than those designated as controls (hue (500-700 nm) : P = 0.0015; red chroma (625-700 nm) : P,0.0001). These results indicate that redder color may result from exposure to copper and challenge the commonly held view that highly pigmented shrimps are healthier than pale shrimps.","publication_date":{"day":null,"month":null,"year":2014,"errors":{}},"publication_name":"PLoS ONE","grobid_abstract_attachment_id":102608198},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304125/The_Effect_of_Copper_on_the_Color_of_Shrimps_Redder_Is_Not_Always_Healthier","translated_internal_url":"","created_at":"2023-05-24T12:03:49.547-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608198,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608198/thumbnails/1.jpg","file_name":"a500f65ac16a279f40f808f9200da12630bc.pdf","download_url":"https://www.academia.edu/attachments/102608198/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_Effect_of_Copper_on_the_Color_of_Shr.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608198/a500f65ac16a279f40f808f9200da12630bc-libre.pdf?1684956980=\u0026response-content-disposition=attachment%3B+filename%3DThe_Effect_of_Copper_on_the_Color_of_Shr.pdf\u0026Expires=1734038537\u0026Signature=JN~3xMPwLHOsjRKgVKDJLph2Qr2HUxjqMlzH4TuHJh3eUZPSn-gxXiTp3hU8xpnuSHXIXzapheNj1P8tFuMx03qG9v0Y2VSDtSugojIZjNoZluuZp1HV1cLnICIw2gONRPpSpo-IgYDn6ZMbhAASMFxN-bc5yiCV3LXdFaPKTDE6lj9lEoESOPoHTgd7OvyUdXWPt7skszWlgMfZ5JGeVTD-AneCFFTZ1PA7ThIKKg8D~7zAGzbB~82O9-hkD1vQ6W3x~cfP0Q3XiiSfrxm-tNr3gBleYLH~vXDxC~vxFxvV5swD7CeXDNwLdqJMtHUSkdV5fHifPpZdbhjAUEH77w__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"The_Effect_of_Copper_on_the_Color_of_Shrimps_Redder_Is_Not_Always_Healthier","translated_slug":"","page_count":5,"language":"en","content_type":"Work","summary":"The objective of this research is to test the effects of copper on the color of pacific white shrimp (Litopenaeus vannamei) in vivo. Forty-eight shrimps (L. vannamei) were exposed to a low concentration of copper (1 mg/L; experimental treatment) and forty-eight shrimps were used as controls (no copper added to the water). As a result of this experiment, it was found that shrimps with more copper are significantly redder than those designated as controls (hue (500-700 nm) : P = 0.0015; red chroma (625-700 nm) : P,0.0001). These results indicate that redder color may result from exposure to copper and challenge the commonly held view that highly pigmented shrimps are healthier than pale shrimps.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608198,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608198/thumbnails/1.jpg","file_name":"a500f65ac16a279f40f808f9200da12630bc.pdf","download_url":"https://www.academia.edu/attachments/102608198/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_Effect_of_Copper_on_the_Color_of_Shr.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608198/a500f65ac16a279f40f808f9200da12630bc-libre.pdf?1684956980=\u0026response-content-disposition=attachment%3B+filename%3DThe_Effect_of_Copper_on_the_Color_of_Shr.pdf\u0026Expires=1734038537\u0026Signature=JN~3xMPwLHOsjRKgVKDJLph2Qr2HUxjqMlzH4TuHJh3eUZPSn-gxXiTp3hU8xpnuSHXIXzapheNj1P8tFuMx03qG9v0Y2VSDtSugojIZjNoZluuZp1HV1cLnICIw2gONRPpSpo-IgYDn6ZMbhAASMFxN-bc5yiCV3LXdFaPKTDE6lj9lEoESOPoHTgd7OvyUdXWPt7skszWlgMfZ5JGeVTD-AneCFFTZ1PA7ThIKKg8D~7zAGzbB~82O9-hkD1vQ6W3x~cfP0Q3XiiSfrxm-tNr3gBleYLH~vXDxC~vxFxvV5swD7CeXDNwLdqJMtHUSkdV5fHifPpZdbhjAUEH77w__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":1877,"name":"Pigmentation","url":"https://www.academia.edu/Documents/in/Pigmentation"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":14406,"name":"Health","url":"https://www.academia.edu/Documents/in/Health"},{"id":20001,"name":"SHRIMP","url":"https://www.academia.edu/Documents/in/SHRIMP"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine"},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary"},{"id":38756,"name":"Color Perception","url":"https://www.academia.edu/Documents/in/Color_Perception"},{"id":61175,"name":"Colour and Light","url":"https://www.academia.edu/Documents/in/Colour_and_Light"},{"id":76714,"name":"Color","url":"https://www.academia.edu/Documents/in/Color"},{"id":80692,"name":"Copper","url":"https://www.academia.edu/Documents/in/Copper"},{"id":115368,"name":"Colour","url":"https://www.academia.edu/Documents/in/Colour"},{"id":126599,"name":"Caridean Shrimps","url":"https://www.academia.edu/Documents/in/Caridean_Shrimps"},{"id":197947,"name":"Chemical Toxicity","url":"https://www.academia.edu/Documents/in/Chemical_Toxicity"},{"id":220780,"name":"PLoS one","url":"https://www.academia.edu/Documents/in/PLoS_one"},{"id":262432,"name":"Penaeid prawns","url":"https://www.academia.edu/Documents/in/Penaeid_prawns"},{"id":736321,"name":"Environmental Pollutants","url":"https://www.academia.edu/Documents/in/Environmental_Pollutants"},{"id":1003876,"name":"Biology on Shrimps","url":"https://www.academia.edu/Documents/in/Biology_on_Shrimps"},{"id":1435468,"name":"Penaeidae","url":"https://www.academia.edu/Documents/in/Penaeidae"},{"id":1453712,"name":"Penaeid Shrimp","url":"https://www.academia.edu/Documents/in/Penaeid_Shrimp"}],"urls":[{"id":31718712,"url":"http://dx.plos.org/10.1371/journal.pone.0107673"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304124"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304124/Haematocrit_values_in_chinstrap_penguins_Pygoscelis_antarctica_variation_with_age_and_reproductive_status"><img alt="Research paper thumbnail of Haematocrit values in chinstrap penguins (Pygoscelis antarctica): variation with age and reproductive status" class="work-thumbnail" src="https://attachments.academia-assets.com/102608194/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304124/Haematocrit_values_in_chinstrap_penguins_Pygoscelis_antarctica_variation_with_age_and_reproductive_status">Haematocrit values in chinstrap penguins (Pygoscelis antarctica): variation with age and reproductive status</a></div><div class="wp-workCard_item"><span>Polar Biology</span><span>, 1997</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">We studied haematocrit variation with age and reproductive status in chinstrap penguins (Pygoscel...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">We studied haematocrit variation with age and reproductive status in chinstrap penguins (Pygoscelis antarctica) at Deception Island, South Shetlands. There was a significant difference in haematocrit values between different age groups (adults vs nestlings and juveniles). Adults had a higher haematocrit value than juveniles and nestlings and juveniles had higher haematocrit values than nestlings. There was also a significant difference in haematocrit values between adults of different status (breeding vs moulting). Breeding adults had higher haematocrit values than moulting adults. The observed differences between age groups were thought to be the result of different oxygen demands due to exercise. The observed differences between adults of different status could reflect the different demands associated with reproduction and moult fasting.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5bb480fced6e2544a32b161ba64e4d54" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608194,"asset_id":102304124,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608194/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304124"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304124"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304124; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304124]").text(description); $(".js-view-count[data-work-id=102304124]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304124; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304124']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304124, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "5bb480fced6e2544a32b161ba64e4d54" } } $('.js-work-strip[data-work-id=102304124]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304124,"title":"Haematocrit values in chinstrap penguins (Pygoscelis antarctica): variation with age and reproductive status","translated_title":"","metadata":{"publisher":"Springer Science and Business Media LLC","grobid_abstract":"We studied haematocrit variation with age and reproductive status in chinstrap penguins (Pygoscelis antarctica) at Deception Island, South Shetlands. 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There was a significant difference in haematocrit values between different age groups (adults vs nestlings and juveniles). Adults had a higher haematocrit value than juveniles and nestlings and juveniles had higher haematocrit values than nestlings. There was also a significant difference in haematocrit values between adults of different status (breeding vs moulting). Breeding adults had higher haematocrit values than moulting adults. The observed differences between age groups were thought to be the result of different oxygen demands due to exercise. 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We hypothesized that beak spots might be sexual ornaments and investigated sexual dichromatism, assortative mating and the possible relationship between beak spot colouration and body condition. Beak colouration was measured with a portable spectroradiometer in 19 breeding pairs of gentoo penguin. Body mass and body mass relative to structural body size were used as estimates of body condition. We found that beak spots were sexually dichromatic, as they were more UV in males and more violet in females, but males and females did not mate assortatively in relation to beak spot colouration. Body condition was strongly related to red colouration in males, with individuals in good condition having redder beaks and individuals in poor condition more orange beaks. The beaks of males in good condition were also brighter. Body condition was not signiWcantly related to beak spot colouration in females, so females might show red beak spots because of genetic correlation with the male trait. These results suggest that the red colour of the beak spot has the potential to be a secondary sexual character in males. Interpretation of the sexual dichromatism in the UV colour will require further knowledge of the capability of gentoo penguins to discriminate small diVerences in UV wavelengths. In any case, experimental manipulation of beak colouration will be needed to ascertain the role of this trait.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="e95a05bc7a4a129f5fd9326f8c7eeffb" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608191,"asset_id":102304123,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608191/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304123"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304123"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304123; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304123]").text(description); $(".js-view-count[data-work-id=102304123]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304123; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304123']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304123, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "e95a05bc7a4a129f5fd9326f8c7eeffb" } } $('.js-work-strip[data-work-id=102304123]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304123,"title":"Beak colouration as a possible sexual ornament in gentoo penguins: sexual dichromatism and relationship to body condition","translated_title":"","metadata":{"publisher":"Springer Nature","grobid_abstract":"Gentoo penguins (Pygoscelis papua) have conspicuous red beak spots, the function of which is currently unknown. We hypothesized that beak spots might be sexual ornaments and investigated sexual dichromatism, assortative mating and the possible relationship between beak spot colouration and body condition. Beak colouration was measured with a portable spectroradiometer in 19 breeding pairs of gentoo penguin. Body mass and body mass relative to structural body size were used as estimates of body condition. We found that beak spots were sexually dichromatic, as they were more UV in males and more violet in females, but males and females did not mate assortatively in relation to beak spot colouration. Body condition was strongly related to red colouration in males, with individuals in good condition having redder beaks and individuals in poor condition more orange beaks. The beaks of males in good condition were also brighter. Body condition was not signiWcantly related to beak spot colouration in females, so females might show red beak spots because of genetic correlation with the male trait. These results suggest that the red colour of the beak spot has the potential to be a secondary sexual character in males. Interpretation of the sexual dichromatism in the UV colour will require further knowledge of the capability of gentoo penguins to discriminate small diVerences in UV wavelengths. In any case, experimental manipulation of beak colouration will be needed to ascertain the role of this trait.","publication_date":{"day":null,"month":null,"year":2009,"errors":{}},"publication_name":"Polar Biology","grobid_abstract_attachment_id":102608191},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304123/Beak_colouration_as_a_possible_sexual_ornament_in_gentoo_penguins_sexual_dichromatism_and_relationship_to_body_condition","translated_internal_url":"","created_at":"2023-05-24T12:03:49.041-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608191,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608191/thumbnails/1.jpg","file_name":"0850.pdf","download_url":"https://www.academia.edu/attachments/102608191/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Beak_colouration_as_a_possible_sexual_or.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608191/0850-libre.pdf?1684956983=\u0026response-content-disposition=attachment%3B+filename%3DBeak_colouration_as_a_possible_sexual_or.pdf\u0026Expires=1734038537\u0026Signature=U9k7ULs6esTkmIc0DPuEtFyg3~AazuVuZg5SO3bb~pyQ3Qcz0a11VvMWfnDZhjfykjX-jLCzCrbpKswlGNHN1bAs1UclFtFJTPhdsfq6TGJ2BlW1oMOp2W45Mgeb2KJcMm5~MSiGRgo6Ne7RxSkRXkYrZW1qkBLQWODc-~daCYpv05NjdTvEmh6BMb0~kyZyIZCBtfARC96W6V73Cc456O19Kt5Sz6RRytZlL~1eA4Iedws0WPB6cgP9lkdP42rqqiB19NQGZqQSy-CbH1f56PJWw-azpMM~GfX333TAzxlX81baRTcghCNoo0DFnvgk1QWyRf~rRkVhUy9p9ii2QA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Beak_colouration_as_a_possible_sexual_ornament_in_gentoo_penguins_sexual_dichromatism_and_relationship_to_body_condition","translated_slug":"","page_count":10,"language":"en","content_type":"Work","summary":"Gentoo penguins (Pygoscelis papua) have conspicuous red beak spots, the function of which is currently unknown. We hypothesized that beak spots might be sexual ornaments and investigated sexual dichromatism, assortative mating and the possible relationship between beak spot colouration and body condition. Beak colouration was measured with a portable spectroradiometer in 19 breeding pairs of gentoo penguin. Body mass and body mass relative to structural body size were used as estimates of body condition. We found that beak spots were sexually dichromatic, as they were more UV in males and more violet in females, but males and females did not mate assortatively in relation to beak spot colouration. Body condition was strongly related to red colouration in males, with individuals in good condition having redder beaks and individuals in poor condition more orange beaks. The beaks of males in good condition were also brighter. Body condition was not signiWcantly related to beak spot colouration in females, so females might show red beak spots because of genetic correlation with the male trait. These results suggest that the red colour of the beak spot has the potential to be a secondary sexual character in males. Interpretation of the sexual dichromatism in the UV colour will require further knowledge of the capability of gentoo penguins to discriminate small diVerences in UV wavelengths. In any case, experimental manipulation of beak colouration will be needed to ascertain the role of this trait.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608191,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608191/thumbnails/1.jpg","file_name":"0850.pdf","download_url":"https://www.academia.edu/attachments/102608191/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Beak_colouration_as_a_possible_sexual_or.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608191/0850-libre.pdf?1684956983=\u0026response-content-disposition=attachment%3B+filename%3DBeak_colouration_as_a_possible_sexual_or.pdf\u0026Expires=1734038537\u0026Signature=U9k7ULs6esTkmIc0DPuEtFyg3~AazuVuZg5SO3bb~pyQ3Qcz0a11VvMWfnDZhjfykjX-jLCzCrbpKswlGNHN1bAs1UclFtFJTPhdsfq6TGJ2BlW1oMOp2W45Mgeb2KJcMm5~MSiGRgo6Ne7RxSkRXkYrZW1qkBLQWODc-~daCYpv05NjdTvEmh6BMb0~kyZyIZCBtfARC96W6V73Cc456O19Kt5Sz6RRytZlL~1eA4Iedws0WPB6cgP9lkdP42rqqiB19NQGZqQSy-CbH1f56PJWw-azpMM~GfX333TAzxlX81baRTcghCNoo0DFnvgk1QWyRf~rRkVhUy9p9ii2QA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":7044,"name":"Sexual Selection","url":"https://www.academia.edu/Documents/in/Sexual_Selection"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":12532,"name":"Assortative Mating","url":"https://www.academia.edu/Documents/in/Assortative_Mating"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":87546,"name":"Ultraviolet","url":"https://www.academia.edu/Documents/in/Ultraviolet"},{"id":151905,"name":"Body Condition","url":"https://www.academia.edu/Documents/in/Body_Condition"},{"id":164264,"name":"Body Size","url":"https://www.academia.edu/Documents/in/Body_Size"},{"id":397456,"name":"Body Mass","url":"https://www.academia.edu/Documents/in/Body_Mass"},{"id":512395,"name":"Polar Biology","url":"https://www.academia.edu/Documents/in/Polar_Biology"},{"id":1315957,"name":"Black Spot","url":"https://www.academia.edu/Documents/in/Black_Spot"},{"id":1822192,"name":"Genetic Correlation","url":"https://www.academia.edu/Documents/in/Genetic_Correlation"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304122"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304122/Population_variability_in_heat_shock_proteins_among_three_Antarctic_penguin_species"><img alt="Research paper thumbnail of Population variability in heat shock proteins among three Antarctic penguin species" class="work-thumbnail" src="https://attachments.academia-assets.com/102608193/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304122/Population_variability_in_heat_shock_proteins_among_three_Antarctic_penguin_species">Population variability in heat shock proteins among three Antarctic penguin species</a></div><div class="wp-workCard_item"><span>Polar Biology</span><span>, 2007</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Heat shock proteins (HSPs) are synthesised under stressful conditions such as exposure to elevate...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Heat shock proteins (HSPs) are synthesised under stressful conditions such as exposure to elevated temperatures, contamination, free radicals, UV light or pathophysiological states resulting from parasites and/or pathogens. HSPs function to protect cells by means of modulation of protein folding. In Antarctica, these proteins have been studied in such organisms as protozoa and Wshes, without attention to geographical variation. We studied the variation of HSP70 and HSP60 levels in Gentoo, Adelie and Chinstrap penguins among diVerent populations along the Antarctic Peninsula from King George Island (62掳15袌S) to Avian Island (67掳46袌S). Our results show that the northern population of Gentoo penguin showed higher levels of HSP70 and HSP60 than the southern population. High temperature, human impact and immunity as a proxy for parasites and diseases in northern locations could explain such variation. Adelie penguin only showed signiWcant geographical variation in HSP70, increasing north to south, a pattern perhaps related to increased UV radiation and decreased temperatures from north to south. Chinstrap penguin shows no population diVerences in the variation in neither HSP70 nor HSP60, although HSP70 showed marginally signiWcant diVerences. Sexual diVerences in the level of these proteins are also discussed.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="7e518570a5930752e7a0e039c5692418" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608193,"asset_id":102304122,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608193/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304122"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304122"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304122; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304122]").text(description); $(".js-view-count[data-work-id=102304122]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304122; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304122']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304122, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "7e518570a5930752e7a0e039c5692418" } } $('.js-work-strip[data-work-id=102304122]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304122,"title":"Population variability in heat shock proteins among three Antarctic penguin species","translated_title":"","metadata":{"publisher":"Springer Science and Business Media LLC","grobid_abstract":"Heat shock proteins (HSPs) are synthesised under stressful conditions such as exposure to elevated temperatures, contamination, free radicals, UV light or pathophysiological states resulting from parasites and/or pathogens. HSPs function to protect cells by means of modulation of protein folding. In Antarctica, these proteins have been studied in such organisms as protozoa and Wshes, without attention to geographical variation. We studied the variation of HSP70 and HSP60 levels in Gentoo, Adelie and Chinstrap penguins among diVerent populations along the Antarctic Peninsula from King George Island (62掳15袌S) to Avian Island (67掳46袌S). Our results show that the northern population of Gentoo penguin showed higher levels of HSP70 and HSP60 than the southern population. High temperature, human impact and immunity as a proxy for parasites and diseases in northern locations could explain such variation. Adelie penguin only showed signiWcant geographical variation in HSP70, increasing north to south, a pattern perhaps related to increased UV radiation and decreased temperatures from north to south. Chinstrap penguin shows no population diVerences in the variation in neither HSP70 nor HSP60, although HSP70 showed marginally signiWcant diVerences. Sexual diVerences in the level of these proteins are also discussed.","publication_date":{"day":null,"month":null,"year":2007,"errors":{}},"publication_name":"Polar Biology","grobid_abstract_attachment_id":102608193},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304122/Population_variability_in_heat_shock_proteins_among_three_Antarctic_penguin_species","translated_internal_url":"","created_at":"2023-05-24T12:03:47.621-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608193,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608193/thumbnails/1.jpg","file_name":"hsp_20penguins_20polar_20biology.pdf","download_url":"https://www.academia.edu/attachments/102608193/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Population_variability_in_heat_shock_pro.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608193/hsp_20penguins_20polar_20biology-libre.pdf?1684956980=\u0026response-content-disposition=attachment%3B+filename%3DPopulation_variability_in_heat_shock_pro.pdf\u0026Expires=1734038537\u0026Signature=eIZx1vEsqmhnPdBPiPR9zXCawZkjIJb33qC40SrVeHtrq3AR2LwdG6Na1~5Z8y475xeiS7DPN1y0X6PTDOlqrkG~BVg0-9LgVnnu1H7a65HJzw9orx7C0JNzeOXL-z-yIGLnZChcXOhnE0FDaTpPxwPIIOJHBb1GxyYHrox1seC8aT7Cecest-DeYVQqAnMfDECGaaiqIfGzltJe0gPkbcxYOKmrALGD2Ggw8Yjgk9P59uaoi7SfRuppWvp6J2u8kfRIelz6P~5Xu0PRf~zy3keQY9-GoE-iSZ8J4Iy3fMbJm8q5t19Um2j5pC0XHCbT0M1nCyC2E1L8Z4Xux~wgGg__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Population_variability_in_heat_shock_proteins_among_three_Antarctic_penguin_species","translated_slug":"","page_count":6,"language":"en","content_type":"Work","summary":"Heat shock proteins (HSPs) are synthesised under stressful conditions such as exposure to elevated temperatures, contamination, free radicals, UV light or pathophysiological states resulting from parasites and/or pathogens. HSPs function to protect cells by means of modulation of protein folding. In Antarctica, these proteins have been studied in such organisms as protozoa and Wshes, without attention to geographical variation. We studied the variation of HSP70 and HSP60 levels in Gentoo, Adelie and Chinstrap penguins among diVerent populations along the Antarctic Peninsula from King George Island (62掳15袌S) to Avian Island (67掳46袌S). Our results show that the northern population of Gentoo penguin showed higher levels of HSP70 and HSP60 than the southern population. High temperature, human impact and immunity as a proxy for parasites and diseases in northern locations could explain such variation. Adelie penguin only showed signiWcant geographical variation in HSP70, increasing north to south, a pattern perhaps related to increased UV radiation and decreased temperatures from north to south. Chinstrap penguin shows no population diVerences in the variation in neither HSP70 nor HSP60, although HSP70 showed marginally signiWcant diVerences. Sexual diVerences in the level of these proteins are also discussed.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608193,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608193/thumbnails/1.jpg","file_name":"hsp_20penguins_20polar_20biology.pdf","download_url":"https://www.academia.edu/attachments/102608193/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Population_variability_in_heat_shock_pro.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608193/hsp_20penguins_20polar_20biology-libre.pdf?1684956980=\u0026response-content-disposition=attachment%3B+filename%3DPopulation_variability_in_heat_shock_pro.pdf\u0026Expires=1734038537\u0026Signature=eIZx1vEsqmhnPdBPiPR9zXCawZkjIJb33qC40SrVeHtrq3AR2LwdG6Na1~5Z8y475xeiS7DPN1y0X6PTDOlqrkG~BVg0-9LgVnnu1H7a65HJzw9orx7C0JNzeOXL-z-yIGLnZChcXOhnE0FDaTpPxwPIIOJHBb1GxyYHrox1seC8aT7Cecest-DeYVQqAnMfDECGaaiqIfGzltJe0gPkbcxYOKmrALGD2Ggw8Yjgk9P59uaoi7SfRuppWvp6J2u8kfRIelz6P~5Xu0PRf~zy3keQY9-GoE-iSZ8J4Iy3fMbJm8q5t19Um2j5pC0XHCbT0M1nCyC2E1L8Z4Xux~wgGg__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":3971,"name":"Protein Folding","url":"https://www.academia.edu/Documents/in/Protein_Folding"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":9729,"name":"Stress","url":"https://www.academia.edu/Documents/in/Stress"},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology"},{"id":44022,"name":"Free Radical","url":"https://www.academia.edu/Documents/in/Free_Radical"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":64336,"name":"Population","url":"https://www.academia.edu/Documents/in/Population"},{"id":112063,"name":"Uv Radiation","url":"https://www.academia.edu/Documents/in/Uv_Radiation"},{"id":133177,"name":"Temperature","url":"https://www.academia.edu/Documents/in/Temperature"},{"id":191117,"name":"High Temperature","url":"https://www.academia.edu/Documents/in/High_Temperature"},{"id":202690,"name":"Human impact","url":"https://www.academia.edu/Documents/in/Human_impact"},{"id":251795,"name":"Environmental Gradient","url":"https://www.academia.edu/Documents/in/Environmental_Gradient"},{"id":354340,"name":"Geographic Variation","url":"https://www.academia.edu/Documents/in/Geographic_Variation"},{"id":477100,"name":"UV light","url":"https://www.academia.edu/Documents/in/UV_light"},{"id":512395,"name":"Polar Biology","url":"https://www.academia.edu/Documents/in/Polar_Biology"},{"id":591410,"name":"Antarctic Peninsula","url":"https://www.academia.edu/Documents/in/Antarctic_Peninsula"},{"id":765872,"name":"Heat Shock Protein","url":"https://www.academia.edu/Documents/in/Heat_Shock_Protein"},{"id":1068737,"name":"Elevated Temperature","url":"https://www.academia.edu/Documents/in/Elevated_Temperature"}],"urls":[{"id":31718710,"url":"https://link.springer.com/content/pdf/10.1007/s00300-007-0284-0.pdf"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304121"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304121/Experimental_assessment_of_the_effects_of_gastrointestinal_parasites_on_offspring_quality_in_chinstrap_penguins_Pygoscelis_antarctica_"><img alt="Research paper thumbnail of Experimental assessment of the effects of gastrointestinal parasites on offspring quality in chinstrap penguins (Pygoscelis antarctica)" class="work-thumbnail" src="https://attachments.academia-assets.com/102608190/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304121/Experimental_assessment_of_the_effects_of_gastrointestinal_parasites_on_offspring_quality_in_chinstrap_penguins_Pygoscelis_antarctica_">Experimental assessment of the effects of gastrointestinal parasites on offspring quality in chinstrap penguins (Pygoscelis antarctica)</a></div><div class="wp-workCard_item"><span>Parasitology</span><span>, 2012</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their hosts. It has been hypothesized that parasites are scarcer and their overall effect on hosts is weaker at higher latitudes. Although Antarctic birds have relatively low numbers of parasites, their effect on host fitness has rarely been investigated. The effect of helminth parasitism on growth rate was experimentally studied in chinstrap penguin (Pygoscelis antarctica) nestlings. In a total of 22 two-nestling broods, 1 nestling was treated with anthelminthics (for cestodes and nematodes) while its sibling was left as a control. Increased growth rate was predicted in de-wormed nestlings compared to their siblings. As expected, 15 days after treatment, the experimental nestlings had increased body mass more than their siblings. These results show a non-negligible negative effect of helminth parasites on nestling body condition that would presumably affect future survival and thus fitness, a...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="755cbd43cf58274d225fcd5c9efba059" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608190,"asset_id":102304121,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608190/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304121"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304121"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304121; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304121]").text(description); $(".js-view-count[data-work-id=102304121]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304121; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304121']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304121, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "755cbd43cf58274d225fcd5c9efba059" } } $('.js-work-strip[data-work-id=102304121]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304121,"title":"Experimental assessment of the effects of gastrointestinal parasites on offspring quality in chinstrap penguins (Pygoscelis antarctica)","translated_title":"","metadata":{"abstract":"SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their hosts. It has been hypothesized that parasites are scarcer and their overall effect on hosts is weaker at higher latitudes. Although Antarctic birds have relatively low numbers of parasites, their effect on host fitness has rarely been investigated. The effect of helminth parasitism on growth rate was experimentally studied in chinstrap penguin (Pygoscelis antarctica) nestlings. In a total of 22 two-nestling broods, 1 nestling was treated with anthelminthics (for cestodes and nematodes) while its sibling was left as a control. Increased growth rate was predicted in de-wormed nestlings compared to their siblings. As expected, 15 days after treatment, the experimental nestlings had increased body mass more than their siblings. These results show a non-negligible negative effect of helminth parasites on nestling body condition that would presumably affect future survival and thus fitness, a...","publisher":"Cambridge University Press (CUP)","publication_date":{"day":null,"month":null,"year":2012,"errors":{}},"publication_name":"Parasitology"},"translated_abstract":"SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their hosts. It has been hypothesized that parasites are scarcer and their overall effect on hosts is weaker at higher latitudes. Although Antarctic birds have relatively low numbers of parasites, their effect on host fitness has rarely been investigated. The effect of helminth parasitism on growth rate was experimentally studied in chinstrap penguin (Pygoscelis antarctica) nestlings. In a total of 22 two-nestling broods, 1 nestling was treated with anthelminthics (for cestodes and nematodes) while its sibling was left as a control. Increased growth rate was predicted in de-wormed nestlings compared to their siblings. As expected, 15 days after treatment, the experimental nestlings had increased body mass more than their siblings. These results show a non-negligible negative effect of helminth parasites on nestling body condition that would presumably affect future survival and thus fitness, a...","internal_url":"https://www.academia.edu/102304121/Experimental_assessment_of_the_effects_of_gastrointestinal_parasites_on_offspring_quality_in_chinstrap_penguins_Pygoscelis_antarctica_","translated_internal_url":"","created_at":"2023-05-24T12:03:47.119-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608190,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608190/thumbnails/1.jpg","file_name":"61d7bb59467d3c6ccced1d41d5725b8e864c.pdf","download_url":"https://www.academia.edu/attachments/102608190/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Experimental_assessment_of_the_effects_o.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608190/61d7bb59467d3c6ccced1d41d5725b8e864c-libre.pdf?1684956977=\u0026response-content-disposition=attachment%3B+filename%3DExperimental_assessment_of_the_effects_o.pdf\u0026Expires=1734038537\u0026Signature=YGd0KIMYwe~~K6VnlQbnkPRZK5I-1he2zD9bz5CzRJMStAckIP0Anu7ASozjuyHSecTdbbhfKLG5LlyyKg8lhJz6vYukGEGaywfEBxhFxKnJ4aWrNsvskx1gTP428mqqK7zZzXxZu7WXhRJR5BfhV1cgwIVehB8-6kQ4opBK8m3p5FOkXmU9UllQkmk84xirYUtvLt3CWgaWuxhbcgRYGPGm9TsWlIBXGrRLmecBB887g2Mko7aPeae5TTW6E4fXfbbXGzxZoqAyzrh-R4hlRxrJccWc3JPwf7O2D~6cPG-Gb~nfKITA-CR-3COudu5sAsW6SX5y5El9~UL7PxlsNA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Experimental_assessment_of_the_effects_of_gastrointestinal_parasites_on_offspring_quality_in_chinstrap_penguins_Pygoscelis_antarctica_","translated_slug":"","page_count":6,"language":"en","content_type":"Work","summary":"SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their hosts. It has been hypothesized that parasites are scarcer and their overall effect on hosts is weaker at higher latitudes. Although Antarctic birds have relatively low numbers of parasites, their effect on host fitness has rarely been investigated. The effect of helminth parasitism on growth rate was experimentally studied in chinstrap penguin (Pygoscelis antarctica) nestlings. In a total of 22 two-nestling broods, 1 nestling was treated with anthelminthics (for cestodes and nematodes) while its sibling was left as a control. Increased growth rate was predicted in de-wormed nestlings compared to their siblings. As expected, 15 days after treatment, the experimental nestlings had increased body mass more than their siblings. These results show a non-negligible negative effect of helminth parasites on nestling body condition that would presumably affect future survival and thus fitness, a...","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608190,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608190/thumbnails/1.jpg","file_name":"61d7bb59467d3c6ccced1d41d5725b8e864c.pdf","download_url":"https://www.academia.edu/attachments/102608190/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Experimental_assessment_of_the_effects_o.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608190/61d7bb59467d3c6ccced1d41d5725b8e864c-libre.pdf?1684956977=\u0026response-content-disposition=attachment%3B+filename%3DExperimental_assessment_of_the_effects_o.pdf\u0026Expires=1734038537\u0026Signature=YGd0KIMYwe~~K6VnlQbnkPRZK5I-1he2zD9bz5CzRJMStAckIP0Anu7ASozjuyHSecTdbbhfKLG5LlyyKg8lhJz6vYukGEGaywfEBxhFxKnJ4aWrNsvskx1gTP428mqqK7zZzXxZu7WXhRJR5BfhV1cgwIVehB8-6kQ4opBK8m3p5FOkXmU9UllQkmk84xirYUtvLt3CWgaWuxhbcgRYGPGm9TsWlIBXGrRLmecBB887g2Mko7aPeae5TTW6E4fXfbbXGzxZoqAyzrh-R4hlRxrJccWc3JPwf7O2D~6cPG-Gb~nfKITA-CR-3COudu5sAsW6SX5y5El9~UL7PxlsNA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":164,"name":"Parasitology","url":"https://www.academia.edu/Documents/in/Parasitology"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":8952,"name":"Breeding","url":"https://www.academia.edu/Documents/in/Breeding"},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine"},{"id":56442,"name":"Parasitism","url":"https://www.academia.edu/Documents/in/Parasitism"},{"id":589678,"name":"Nesting Behavior","url":"https://www.academia.edu/Documents/in/Nesting_Behavior"},{"id":644860,"name":"Veterinary Sciences","url":"https://www.academia.edu/Documents/in/Veterinary_Sciences"},{"id":749584,"name":"Anthelmintics","url":"https://www.academia.edu/Documents/in/Anthelmintics"},{"id":827427,"name":"Praziquantel","url":"https://www.academia.edu/Documents/in/Praziquantel"},{"id":998241,"name":"Helminths","url":"https://www.academia.edu/Documents/in/Helminths"},{"id":1111004,"name":"Helminthiasis","url":"https://www.academia.edu/Documents/in/Helminthiasis"},{"id":1256595,"name":"Levamisole","url":"https://www.academia.edu/Documents/in/Levamisole"},{"id":1454485,"name":"Spheniscidae","url":"https://www.academia.edu/Documents/in/Spheniscidae"},{"id":2733652,"name":"Intestinal diseases","url":"https://www.academia.edu/Documents/in/Intestinal_diseases"}],"urls":[{"id":31718709,"url":"https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182011002381"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304120"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304120/Increase_in_a_heat_shock_protein_from_blood_cells_in_response_of_nestling_house_martins_Delichon_urbica_to_parasitism_an_experimental_approach"><img alt="Research paper thumbnail of Increase in a heat-shock protein from blood cells in response of nestling house martins ( Delichon urbica ) to parasitism: an experimental approach" class="work-thumbnail" src="https://attachments.academia-assets.com/102608186/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304120/Increase_in_a_heat_shock_protein_from_blood_cells_in_response_of_nestling_house_martins_Delichon_urbica_to_parasitism_an_experimental_approach">Increase in a heat-shock protein from blood cells in response of nestling house martins ( Delichon urbica ) to parasitism: an experimental approach</a></div><div class="wp-workCard_item"><span>Oecologia</span><span>, 1998</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Heat-shock proteins (HSPs) are synthesized by animals and plants in response to various stressors...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Heat-shock proteins (HSPs) are synthesized by animals and plants in response to various stressors. The level of the HSP60 stress protein was measured from the cell fraction of peripheral blood obtained from nestling house martins (Delichon urbica) to test whether ectoparasitism increased the concentration of stress protein. We assessed HSP from nestlings raised in nests previously treated with an insecticide or infested with 50 martin bugs (Oeciacus hirundinis). In addition, haematozoa infections were checked in blood smears. Nestlings from parasite-infested nests, or nestlings infected with trypanosomes, had increased levels of HSP in their blood cells. Nestling growth as determined from wing length was negatively related to HSP60 levels and within-brood variation in wing length increased with increasing levels of the stress protein independently of treatment and infection by trypanosomes. These results suggest HSPs may play a role in host-parasite interactions, and that they can be used reliably for measuring physiological responses to parasites.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="68d698b7729a9b08d04807e91a4aa66d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608186,"asset_id":102304120,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608186/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304120"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304120"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304120; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304120]").text(description); $(".js-view-count[data-work-id=102304120]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304120; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304120']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304120, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "68d698b7729a9b08d04807e91a4aa66d" } } $('.js-work-strip[data-work-id=102304120]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304120,"title":"Increase in a heat-shock protein from blood cells in response of nestling house martins ( Delichon urbica ) to parasitism: an experimental approach","translated_title":"","metadata":{"publisher":"Springer Science and Business Media LLC","grobid_abstract":"Heat-shock proteins (HSPs) are synthesized by animals and plants in response to various stressors. The level of the HSP60 stress protein was measured from the cell fraction of peripheral blood obtained from nestling house martins (Delichon urbica) to test whether ectoparasitism increased the concentration of stress protein. We assessed HSP from nestlings raised in nests previously treated with an insecticide or infested with 50 martin bugs (Oeciacus hirundinis). In addition, haematozoa infections were checked in blood smears. Nestlings from parasite-infested nests, or nestlings infected with trypanosomes, had increased levels of HSP in their blood cells. Nestling growth as determined from wing length was negatively related to HSP60 levels and within-brood variation in wing length increased with increasing levels of the stress protein independently of treatment and infection by trypanosomes. These results suggest HSPs may play a role in host-parasite interactions, and that they can be used reliably for measuring physiological responses to parasites.","publication_date":{"day":null,"month":null,"year":1998,"errors":{}},"publication_name":"Oecologia","grobid_abstract_attachment_id":102608186},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304120/Increase_in_a_heat_shock_protein_from_blood_cells_in_response_of_nestling_house_martins_Delichon_urbica_to_parasitism_an_experimental_approach","translated_internal_url":"","created_at":"2023-05-24T12:03:46.899-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608186,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608186/thumbnails/1.jpg","file_name":"s004420050596.pdf","download_url":"https://www.academia.edu/attachments/102608186/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Increase_in_a_heat_shock_protein_from_bl.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608186/s004420050596-libre.pdf?1684956976=\u0026response-content-disposition=attachment%3B+filename%3DIncrease_in_a_heat_shock_protein_from_bl.pdf\u0026Expires=1734038537\u0026Signature=Xnd0osAU5wsJfix0EEERM4BQK2yj-lE2muuyS~V0U-wboNz44YTo0SknxDa-xhco9i-G1axzqh1mJ6Cau~MYzNRRX1FMOhASPmME5mGMLamw-8-YlKht83-8u0jloc8m-fegFwhydhA1NAQNQM-29tZM-OMZkkalhhLBlcI2i1~W4Rt0CZyfHLUYfUhXG04fkD9GSiytfgyC873nrEK18ecpImLSdvRNZXOQJCKIKovZtN96hqjjy0750wCGB0GfpqTPniNCjbdsiP7dPS30CLgZ8Gf1KhW3ynqYH~C1jSRAeItvBULwVvM-H0FPyHQ0za8R3nIIY3hw~p1KLtcoIA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Increase_in_a_heat_shock_protein_from_blood_cells_in_response_of_nestling_house_martins_Delichon_urbica_to_parasitism_an_experimental_approach","translated_slug":"","page_count":2,"language":"en","content_type":"Work","summary":"Heat-shock proteins (HSPs) are synthesized by animals and plants in response to various stressors. The level of the HSP60 stress protein was measured from the cell fraction of peripheral blood obtained from nestling house martins (Delichon urbica) to test whether ectoparasitism increased the concentration of stress protein. We assessed HSP from nestlings raised in nests previously treated with an insecticide or infested with 50 martin bugs (Oeciacus hirundinis). In addition, haematozoa infections were checked in blood smears. Nestlings from parasite-infested nests, or nestlings infected with trypanosomes, had increased levels of HSP in their blood cells. Nestling growth as determined from wing length was negatively related to HSP60 levels and within-brood variation in wing length increased with increasing levels of the stress protein independently of treatment and infection by trypanosomes. These results suggest HSPs may play a role in host-parasite interactions, and that they can be used reliably for measuring physiological responses to parasites.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608186,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608186/thumbnails/1.jpg","file_name":"s004420050596.pdf","download_url":"https://www.academia.edu/attachments/102608186/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Increase_in_a_heat_shock_protein_from_bl.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608186/s004420050596-libre.pdf?1684956976=\u0026response-content-disposition=attachment%3B+filename%3DIncrease_in_a_heat_shock_protein_from_bl.pdf\u0026Expires=1734038537\u0026Signature=Xnd0osAU5wsJfix0EEERM4BQK2yj-lE2muuyS~V0U-wboNz44YTo0SknxDa-xhco9i-G1axzqh1mJ6Cau~MYzNRRX1FMOhASPmME5mGMLamw-8-YlKht83-8u0jloc8m-fegFwhydhA1NAQNQM-29tZM-OMZkkalhhLBlcI2i1~W4Rt0CZyfHLUYfUhXG04fkD9GSiytfgyC873nrEK18ecpImLSdvRNZXOQJCKIKovZtN96hqjjy0750wCGB0GfpqTPniNCjbdsiP7dPS30CLgZ8Gf1KhW3ynqYH~C1jSRAeItvBULwVvM-H0FPyHQ0za8R3nIIY3hw~p1KLtcoIA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology"},{"id":11153,"name":"Trypanosomes","url":"https://www.academia.edu/Documents/in/Trypanosomes"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine"},{"id":53663,"name":"HSP","url":"https://www.academia.edu/Documents/in/HSP"},{"id":56442,"name":"Parasitism","url":"https://www.academia.edu/Documents/in/Parasitism"},{"id":223041,"name":"Oecologia","url":"https://www.academia.edu/Documents/in/Oecologia"},{"id":224603,"name":"Physiological Response","url":"https://www.academia.edu/Documents/in/Physiological_Response"},{"id":297937,"name":"Host Parasite Interaction","url":"https://www.academia.edu/Documents/in/Host_Parasite_Interaction"},{"id":765872,"name":"Heat Shock Protein","url":"https://www.academia.edu/Documents/in/Heat_Shock_Protein"},{"id":958194,"name":"Sedimentation Rate","url":"https://www.academia.edu/Documents/in/Sedimentation_Rate"},{"id":1268010,"name":"Brood","url":"https://www.academia.edu/Documents/in/Brood"},{"id":1311469,"name":"Blood cells","url":"https://www.academia.edu/Documents/in/Blood_cells"},{"id":3833419,"name":"Peripheral blood","url":"https://www.academia.edu/Documents/in/Peripheral_blood"}],"urls":[{"id":31718708,"url":"http://link.springer.com/content/pdf/10.1007/s004420050596.pdf"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304119"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304119/Monitoring_trace_elements_in_Antarctic_penguin_chicks_from_South_Shetland_Islands_Antarctica"><img alt="Research paper thumbnail of Monitoring trace elements in Antarctic penguin chicks from South Shetland Islands, Antarctica" class="work-thumbnail" src="https://attachments.academia-assets.com/102608189/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304119/Monitoring_trace_elements_in_Antarctic_penguin_chicks_from_South_Shetland_Islands_Antarctica">Monitoring trace elements in Antarctic penguin chicks from South Shetland Islands, Antarctica</a></div><div class="wp-workCard_item"><span>Marine Pollution Bulletin</span><span>, 2013</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The concentration of human activities in the near-shore ecosystems from the northern Antarctic Pe...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The concentration of human activities in the near-shore ecosystems from the northern Antarctic Peninsula area can cause an increasing bioavailability of pollutants for the vulnerable Antarctic biota. Penguin chicks can reflect this potential impact in the rookeries during the breeding season. They also can reflect biomagnification phenomena since they are on the top of the Antarctic food chain. The concentrations of Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Cd and Pb were measured by ICP-MS in samples of liver, kidney, muscle, bone, feather and stomach content of gentoo, chinstrap and Ad茅lie penguin chicks (n = 15 individuals) collected opportunistically in the Islands of King George and Deception (South Shetland Islands, Antarctica). The detected levels of some trace elements were not as low as it could be expected in the isolated Antarctic region. Penguin chicks can be useful indicators of trace elements abundance in the study areas. Capsule: Carcasses of Antarctic penguin chicks were used to evaluate the bioavailability of trace elements in the Islands of King George and Deception.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="b6401fadcc13a3af111ee694d92f5392" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608189,"asset_id":102304119,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608189/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304119"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304119"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304119; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304119]").text(description); $(".js-view-count[data-work-id=102304119]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304119; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304119']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304119, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "b6401fadcc13a3af111ee694d92f5392" } } $('.js-work-strip[data-work-id=102304119]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304119,"title":"Monitoring trace elements in Antarctic penguin chicks from South Shetland Islands, Antarctica","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"The concentration of human activities in the near-shore ecosystems from the northern Antarctic Peninsula area can cause an increasing bioavailability of pollutants for the vulnerable Antarctic biota. 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Capsule: Carcasses of Antarctic penguin chicks were used to evaluate the bioavailability of trace elements in the Islands of King George and Deception.","publication_date":{"day":null,"month":null,"year":2013,"errors":{}},"publication_name":"Marine Pollution Bulletin","grobid_abstract_attachment_id":102608189},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304119/Monitoring_trace_elements_in_Antarctic_penguin_chicks_from_South_Shetland_Islands_Antarctica","translated_internal_url":"","created_at":"2023-05-24T12:03:46.658-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608189,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608189/thumbnails/1.jpg","file_name":"j.marpolbul.2013.01.00420230524-1-mp0fsa.pdf","download_url":"https://www.academia.edu/attachments/102608189/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Monitoring_trace_elements_in_Antarctic_p.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608189/j.marpolbul.2013.01.00420230524-1-mp0fsa-libre.pdf?1684956983=\u0026response-content-disposition=attachment%3B+filename%3DMonitoring_trace_elements_in_Antarctic_p.pdf\u0026Expires=1734038537\u0026Signature=fOILiMTheheVYUeCezg9F-MtnTEcqOyhTH~pTo18aWLGeI07tidT345sPBFczOBVkSyk1jUbgcXGwl49uvy-ADnaSbjpqn1p2AHGLxTsGpo85LPIN8oSUiC8pUOqFLoJj70dFTVfnglWSLNNFTdFPtzd5z4~gMiXhSoDm6~Xh1uhy-vjSgozKd-EG3Onczbyi4ldridp7vxBTv4qtRCxKKRCQTkk1LSVP4U-t~asn3C5omyI-tn7SO8liPVx5cZ0zh1dJA5U3amLxGuIzj25txrAi9sIolySbC0zyPBTSPP7zLRWOJtLjCYDvE0XGzeDqHcMQw3yYNEfC0HIWZElhw__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Monitoring_trace_elements_in_Antarctic_penguin_chicks_from_South_Shetland_Islands_Antarctica","translated_slug":"","page_count":9,"language":"en","content_type":"Work","summary":"The concentration of human activities in the near-shore ecosystems from the northern Antarctic Peninsula area can cause an increasing bioavailability of pollutants for the vulnerable Antarctic biota. 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Capsule: Carcasses of Antarctic penguin chicks were used to evaluate the bioavailability of trace elements in the Islands of King George and Deception.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608189,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608189/thumbnails/1.jpg","file_name":"j.marpolbul.2013.01.00420230524-1-mp0fsa.pdf","download_url":"https://www.academia.edu/attachments/102608189/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Monitoring_trace_elements_in_Antarctic_p.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608189/j.marpolbul.2013.01.00420230524-1-mp0fsa-libre.pdf?1684956983=\u0026response-content-disposition=attachment%3B+filename%3DMonitoring_trace_elements_in_Antarctic_p.pdf\u0026Expires=1734038537\u0026Signature=fOILiMTheheVYUeCezg9F-MtnTEcqOyhTH~pTo18aWLGeI07tidT345sPBFczOBVkSyk1jUbgcXGwl49uvy-ADnaSbjpqn1p2AHGLxTsGpo85LPIN8oSUiC8pUOqFLoJj70dFTVfnglWSLNNFTdFPtzd5z4~gMiXhSoDm6~Xh1uhy-vjSgozKd-EG3Onczbyi4ldridp7vxBTv4qtRCxKKRCQTkk1LSVP4U-t~asn3C5omyI-tn7SO8liPVx5cZ0zh1dJA5U3amLxGuIzj25txrAi9sIolySbC0zyPBTSPP7zLRWOJtLjCYDvE0XGzeDqHcMQw3yYNEfC0HIWZElhw__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":261,"name":"Geography","url":"https://www.academia.edu/Documents/in/Geography"},{"id":11801,"name":"Environmental Monitoring","url":"https://www.academia.edu/Documents/in/Environmental_Monitoring"},{"id":25445,"name":"Environmental Pollution","url":"https://www.academia.edu/Documents/in/Environmental_Pollution"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine"},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary"},{"id":166010,"name":"Pollution","url":"https://www.academia.edu/Documents/in/Pollution"},{"id":224577,"name":"Trace Elements","url":"https://www.academia.edu/Documents/in/Trace_Elements"},{"id":255058,"name":"Metals","url":"https://www.academia.edu/Documents/in/Metals"},{"id":273728,"name":"Ciencias Biol贸gicas","url":"https://www.academia.edu/Documents/in/Ciencias_Biol%C3%B3gicas"},{"id":443558,"name":"Shetland","url":"https://www.academia.edu/Documents/in/Shetland"},{"id":736321,"name":"Environmental Pollutants","url":"https://www.academia.edu/Documents/in/Environmental_Pollutants"},{"id":827929,"name":"Conservaci贸n De La Biodiversidad","url":"https://www.academia.edu/Documents/in/Conservaci%C3%B3n_De_La_Biodiversidad"},{"id":834420,"name":"Biota","url":"https://www.academia.edu/Documents/in/Biota"},{"id":903559,"name":"Ense帽anza - Aprendizaje Ciencias Naturales Y Exactas","url":"https://www.academia.edu/Documents/in/Ensenanza_-_Aprendizaje_Ciencias_Naturales_Y_Exactas"},{"id":1454485,"name":"Spheniscidae","url":"https://www.academia.edu/Documents/in/Spheniscidae"},{"id":2606821,"name":"South Shetland Islands","url":"https://www.academia.edu/Documents/in/South_Shetland_Islands"}],"urls":[{"id":31718707,"url":"https://api.elsevier.com/content/article/PII:S0025326X13000064?httpAccept=text/xml"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304118"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304118/No_inbreeding_effects_on_body_size_in_two_captive_endangered_gazelles"><img alt="Research paper thumbnail of No inbreeding effects on body size in two captive endangered gazelles" class="work-thumbnail" src="https://attachments.academia-assets.com/102608187/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304118/No_inbreeding_effects_on_body_size_in_two_captive_endangered_gazelles">No inbreeding effects on body size in two captive endangered gazelles</a></div><div class="wp-workCard_item"><span>Mammalian Biology - Zeitschrift f眉r S盲ugetierkunde</span><span>, 2011</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Selection for body size is intricate, involving trade-offs between energy costs, reproductive out...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Selection for body size is intricate, involving trade-offs between energy costs, reproductive output, foraging efficiency, and interaction with other community members. In dimorphic, polygynous ungulates, body size is highly correlated with reproductive success in both sexes. Body size has been proposed as a potential phenotypic indicator of genetic change, in wild and in captive populations. We analysed the relationship between adult body size and inbreeding in two captive populations of endangered gazelles. Two estimates of inbreeding were used: individual inbreeding coefficient (F i) and individual increase in inbreeding (F i). Six cranial traits and eight post-cranial bones were measured in 87 Cuvier's gazelles and 97 Mohor gazelles. The average level of individual inbreeding found for the alive population of Cuvier's gazelle was 0.236 and for Mohor gazelle 0.260. Our study demonstrated that within our populations most variability in body size is explained by sex, but we have not found any evidence of inbreeding depression in this morphological trait. Our results are surprising in the light of a widely held belief that from an evolutionary point of view close inbreeding has deleterious effects. The great diversity of factors acting on the effects of inbreeding on trait values make difficult to provide a simple framework to understand them all, hence, we suggest fitness consequences of inbreeding has to be assessed considering the conditions under which one should expect inbreeding depression.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="7210bb7b471a85612180b6813129f976" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608187,"asset_id":102304118,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608187/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304118"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304118"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304118; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304118]").text(description); $(".js-view-count[data-work-id=102304118]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304118; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304118']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304118, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "7210bb7b471a85612180b6813129f976" } } $('.js-work-strip[data-work-id=102304118]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304118,"title":"No inbreeding effects on body size in two captive endangered gazelles","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"Selection for body size is intricate, involving trade-offs between energy costs, reproductive output, foraging efficiency, and interaction with other community members. In dimorphic, polygynous ungulates, body size is highly correlated with reproductive success in both sexes. Body size has been proposed as a potential phenotypic indicator of genetic change, in wild and in captive populations. We analysed the relationship between adult body size and inbreeding in two captive populations of endangered gazelles. Two estimates of inbreeding were used: individual inbreeding coefficient (F i) and individual increase in inbreeding (F i). Six cranial traits and eight post-cranial bones were measured in 87 Cuvier's gazelles and 97 Mohor gazelles. The average level of individual inbreeding found for the alive population of Cuvier's gazelle was 0.236 and for Mohor gazelle 0.260. Our study demonstrated that within our populations most variability in body size is explained by sex, but we have not found any evidence of inbreeding depression in this morphological trait. Our results are surprising in the light of a widely held belief that from an evolutionary point of view close inbreeding has deleterious effects. The great diversity of factors acting on the effects of inbreeding on trait values make difficult to provide a simple framework to understand them all, hence, we suggest fitness consequences of inbreeding has to be assessed considering the conditions under which one should expect inbreeding depression.","publication_date":{"day":null,"month":null,"year":2011,"errors":{}},"publication_name":"Mammalian Biology - Zeitschrift f眉r S盲ugetierkunde","grobid_abstract_attachment_id":102608187},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304118/No_inbreeding_effects_on_body_size_in_two_captive_endangered_gazelles","translated_internal_url":"","created_at":"2023-05-24T12:03:46.525-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608187,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608187/thumbnails/1.jpg","file_name":"j.mambio.2011.04.00220230524-1-38ahje.pdf","download_url":"https://www.academia.edu/attachments/102608187/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"No_inbreeding_effects_on_body_size_in_tw.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608187/j.mambio.2011.04.00220230524-1-38ahje-libre.pdf?1684956979=\u0026response-content-disposition=attachment%3B+filename%3DNo_inbreeding_effects_on_body_size_in_tw.pdf\u0026Expires=1734038537\u0026Signature=BTl1vgm~P7I5K5IlRT6XQRxhkzcA5K0jl84iV~d3ZFPTTUPmzrcAnJcaBz7xq4DM5KZibCm0u2fCy7DVw1pf0c6QnuoPOPo-gtVyQ9AYpxYCpgZmDVSKTikh7B8bl7C6T1wfuS2IwFrXHJxlwa~AHLHQbL9cGOZI4ezUS7Cj5RN1xLFsJaJUeyXO51ZSCxrJ7p4TY4dJY5SjuRUY9xdaCaQDopA8x~9t3FGcB9O~JY8Px2-jxy7NGLuGfBmsy89cPe7XEcsWJKY038OzTxX8wU0boAwyvH2otZw~bFtcmT1a4N2fuVr3sixqBMX1w10SyF-4tnFkSj5NbtgPDT9P9Q__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"No_inbreeding_effects_on_body_size_in_two_captive_endangered_gazelles","translated_slug":"","page_count":7,"language":"en","content_type":"Work","summary":"Selection for body size is intricate, involving trade-offs between energy costs, reproductive output, foraging efficiency, and interaction with other community members. In dimorphic, polygynous ungulates, body size is highly correlated with reproductive success in both sexes. Body size has been proposed as a potential phenotypic indicator of genetic change, in wild and in captive populations. We analysed the relationship between adult body size and inbreeding in two captive populations of endangered gazelles. Two estimates of inbreeding were used: individual inbreeding coefficient (F i) and individual increase in inbreeding (F i). Six cranial traits and eight post-cranial bones were measured in 87 Cuvier's gazelles and 97 Mohor gazelles. The average level of individual inbreeding found for the alive population of Cuvier's gazelle was 0.236 and for Mohor gazelle 0.260. Our study demonstrated that within our populations most variability in body size is explained by sex, but we have not found any evidence of inbreeding depression in this morphological trait. Our results are surprising in the light of a widely held belief that from an evolutionary point of view close inbreeding has deleterious effects. The great diversity of factors acting on the effects of inbreeding on trait values make difficult to provide a simple framework to understand them all, hence, we suggest fitness consequences of inbreeding has to be assessed considering the conditions under which one should expect inbreeding depression.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608187,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608187/thumbnails/1.jpg","file_name":"j.mambio.2011.04.00220230524-1-38ahje.pdf","download_url":"https://www.academia.edu/attachments/102608187/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"No_inbreeding_effects_on_body_size_in_tw.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608187/j.mambio.2011.04.00220230524-1-38ahje-libre.pdf?1684956979=\u0026response-content-disposition=attachment%3B+filename%3DNo_inbreeding_effects_on_body_size_in_tw.pdf\u0026Expires=1734038537\u0026Signature=BTl1vgm~P7I5K5IlRT6XQRxhkzcA5K0jl84iV~d3ZFPTTUPmzrcAnJcaBz7xq4DM5KZibCm0u2fCy7DVw1pf0c6QnuoPOPo-gtVyQ9AYpxYCpgZmDVSKTikh7B8bl7C6T1wfuS2IwFrXHJxlwa~AHLHQbL9cGOZI4ezUS7Cj5RN1xLFsJaJUeyXO51ZSCxrJ7p4TY4dJY5SjuRUY9xdaCaQDopA8x~9t3FGcB9O~JY8Px2-jxy7NGLuGfBmsy89cPe7XEcsWJKY038OzTxX8wU0boAwyvH2otZw~bFtcmT1a4N2fuVr3sixqBMX1w10SyF-4tnFkSj5NbtgPDT9P9Q__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":156,"name":"Genetics","url":"https://www.academia.edu/Documents/in/Genetics"},{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":14483,"name":"Animal Ecology","url":"https://www.academia.edu/Documents/in/Animal_Ecology"},{"id":141012,"name":"Captive Breeding","url":"https://www.academia.edu/Documents/in/Captive_Breeding"},{"id":151945,"name":"Reproductive Success","url":"https://www.academia.edu/Documents/in/Reproductive_Success"},{"id":164264,"name":"Body Size","url":"https://www.academia.edu/Documents/in/Body_Size"},{"id":413806,"name":"Inbreeding","url":"https://www.academia.edu/Documents/in/Inbreeding"},{"id":485998,"name":"Inbreeding Depression","url":"https://www.academia.edu/Documents/in/Inbreeding_Depression"},{"id":892890,"name":"Point of View","url":"https://www.academia.edu/Documents/in/Point_of_View"},{"id":1010596,"name":"Energy Cost","url":"https://www.academia.edu/Documents/in/Energy_Cost"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304117"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304117/Low_prevalence_of_haematozoa_in_Trumpeter_finches_Bucanetes_githagineus_from_south_eastern_Spain_additional_support_for_a_restricted_distribution_of_blood_parasites_in_arid_lands"><img alt="Research paper thumbnail of Low prevalence of haematozoa in Trumpeter finches Bucanetes githagineus from south-eastern Spain: additional support for a restricted distribution of blood parasites in arid lands" class="work-thumbnail" src="https://attachments.academia-assets.com/102608185/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304117/Low_prevalence_of_haematozoa_in_Trumpeter_finches_Bucanetes_githagineus_from_south_eastern_Spain_additional_support_for_a_restricted_distribution_of_blood_parasites_in_arid_lands">Low prevalence of haematozoa in Trumpeter finches Bucanetes githagineus from south-eastern Spain: additional support for a restricted distribution of blood parasites in arid lands</a></div><div class="wp-workCard_item"><span>Journal of Arid Environments</span><span>, 2003</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">We have investigated the prevalence of avian haematozoa in Trumpeter finches at two localities si...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">We have investigated the prevalence of avian haematozoa in Trumpeter finches at two localities situated in arid habitats. This study reports the first record of infection for this bird species. Two out of 58 individuals were infected by Leucocytozoon sp. We discuss several hypotheses accounting for low parasitemia in arid bird species.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2882f7e2b9b836369586977116c47529" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608185,"asset_id":102304117,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608185/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304117"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304117"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304117; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304117]").text(description); $(".js-view-count[data-work-id=102304117]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304117; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304117']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304117, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "2882f7e2b9b836369586977116c47529" } } $('.js-work-strip[data-work-id=102304117]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304117,"title":"Low prevalence of haematozoa in Trumpeter finches Bucanetes githagineus from south-eastern Spain: additional support for a restricted distribution of blood parasites in arid lands","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"We have investigated the prevalence of avian haematozoa in Trumpeter finches at two localities situated in arid habitats. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304116"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304116/Physiological_and_haematological_consequences_of_a_novel_parasite_on_the_red_rumped_swallow_Hirundo_daurica"><img alt="Research paper thumbnail of Physiological and haematological consequences of a novel parasite on the red-rumped swallow Hirundo daurica" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304116/Physiological_and_haematological_consequences_of_a_novel_parasite_on_the_red_rumped_swallow_Hirundo_daurica">Physiological and haematological consequences of a novel parasite on the red-rumped swallow Hirundo daurica</a></div><div class="wp-workCard_item"><span>International Journal for Parasitology</span><span>, 2001</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Parasite virulence has been hypothesised to increase with the degree of host sociality because hi...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Parasite virulence has been hypothesised to increase with the degree of host sociality because highly social hosts have a greater probability of encountering horizontal transmission of parasites and experiencing infections with multiple strains of the same parasites than do solitary hosts. As compared with the defences of closely related social host species, we predicted that solitary hosts should have relatively weak defences against parasites, thus being relatively more affected when parasitised by a novel parasite. We tested this prediction by either experimentally infesting 12 nests of the solitarily nesting red-rumped swallow Hirundo daurica with 50 individuals of the generalist martin bug Oeciacus hirundinis or by fumigation of nine nests. Nestlings 13 days old from the parasite addition group experienced increased mortality, attained lower body mass and tended to have shorter tarsi compared to nestlings from fumigated nests. Surprisingly, nestlings from the parasite addition group had higher packed cell volume (cellular fraction of blood) and lower levels of heat shock proteins (HSP60) than nestlings from the fumigation group. A measure of immunocompetence was not significantly affected by treatment, but its magnitude was positively related to packed cell volume and negatively related to level of HSP60. Solitary hosts like the red-rumped swallow have weak immune responses and low levels of heat shock proteins when infested with ectoparasites while highly social hosts have strong immune responses and high levels of heat shock proteins when infested. These findings partially support the hypothesis that potential host species with weak defences are more susceptible to infection and the deleterious effects of evolving parasites than potential hosts with strong defences.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304116"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304116"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304116; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304116]").text(description); $(".js-view-count[data-work-id=102304116]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304116; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304116']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304116, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=102304116]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304116,"title":"Physiological and haematological consequences of a novel parasite on the red-rumped swallow Hirundo daurica","translated_title":"","metadata":{"abstract":"Parasite virulence has been hypothesised to increase with the degree of host sociality because highly social hosts have a greater probability of encountering horizontal transmission of parasites and experiencing infections with multiple strains of the same parasites than do solitary hosts. As compared with the defences of closely related social host species, we predicted that solitary hosts should have relatively weak defences against parasites, thus being relatively more affected when parasitised by a novel parasite. We tested this prediction by either experimentally infesting 12 nests of the solitarily nesting red-rumped swallow Hirundo daurica with 50 individuals of the generalist martin bug Oeciacus hirundinis or by fumigation of nine nests. Nestlings 13 days old from the parasite addition group experienced increased mortality, attained lower body mass and tended to have shorter tarsi compared to nestlings from fumigated nests. Surprisingly, nestlings from the parasite addition group had higher packed cell volume (cellular fraction of blood) and lower levels of heat shock proteins (HSP60) than nestlings from the fumigation group. A measure of immunocompetence was not significantly affected by treatment, but its magnitude was positively related to packed cell volume and negatively related to level of HSP60. Solitary hosts like the red-rumped swallow have weak immune responses and low levels of heat shock proteins when infested with ectoparasites while highly social hosts have strong immune responses and high levels of heat shock proteins when infested. These findings partially support the hypothesis that potential host species with weak defences are more susceptible to infection and the deleterious effects of evolving parasites than potential hosts with strong defences.","publisher":"Elsevier BV","publication_date":{"day":null,"month":null,"year":2001,"errors":{}},"publication_name":"International Journal for Parasitology"},"translated_abstract":"Parasite virulence has been hypothesised to increase with the degree of host sociality because highly social hosts have a greater probability of encountering horizontal transmission of parasites and experiencing infections with multiple strains of the same parasites than do solitary hosts. As compared with the defences of closely related social host species, we predicted that solitary hosts should have relatively weak defences against parasites, thus being relatively more affected when parasitised by a novel parasite. We tested this prediction by either experimentally infesting 12 nests of the solitarily nesting red-rumped swallow Hirundo daurica with 50 individuals of the generalist martin bug Oeciacus hirundinis or by fumigation of nine nests. Nestlings 13 days old from the parasite addition group experienced increased mortality, attained lower body mass and tended to have shorter tarsi compared to nestlings from fumigated nests. Surprisingly, nestlings from the parasite addition group had higher packed cell volume (cellular fraction of blood) and lower levels of heat shock proteins (HSP60) than nestlings from the fumigation group. A measure of immunocompetence was not significantly affected by treatment, but its magnitude was positively related to packed cell volume and negatively related to level of HSP60. Solitary hosts like the red-rumped swallow have weak immune responses and low levels of heat shock proteins when infested with ectoparasites while highly social hosts have strong immune responses and high levels of heat shock proteins when infested. These findings partially support the hypothesis that potential host species with weak defences are more susceptible to infection and the deleterious effects of evolving parasites than potential hosts with strong defences.","internal_url":"https://www.academia.edu/102304116/Physiological_and_haematological_consequences_of_a_novel_parasite_on_the_red_rumped_swallow_Hirundo_daurica","translated_internal_url":"","created_at":"2023-05-24T12:03:46.107-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"Physiological_and_haematological_consequences_of_a_novel_parasite_on_the_red_rumped_swallow_Hirundo_daurica","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"Parasite virulence has been hypothesised to increase with the degree of host sociality because highly social hosts have a greater probability of encountering horizontal transmission of parasites and experiencing infections with multiple strains of the same parasites than do solitary hosts. As compared with the defences of closely related social host species, we predicted that solitary hosts should have relatively weak defences against parasites, thus being relatively more affected when parasitised by a novel parasite. We tested this prediction by either experimentally infesting 12 nests of the solitarily nesting red-rumped swallow Hirundo daurica with 50 individuals of the generalist martin bug Oeciacus hirundinis or by fumigation of nine nests. Nestlings 13 days old from the parasite addition group experienced increased mortality, attained lower body mass and tended to have shorter tarsi compared to nestlings from fumigated nests. Surprisingly, nestlings from the parasite addition group had higher packed cell volume (cellular fraction of blood) and lower levels of heat shock proteins (HSP60) than nestlings from the fumigation group. A measure of immunocompetence was not significantly affected by treatment, but its magnitude was positively related to packed cell volume and negatively related to level of HSP60. Solitary hosts like the red-rumped swallow have weak immune responses and low levels of heat shock proteins when infested with ectoparasites while highly social hosts have strong immune responses and high levels of heat shock proteins when infested. These findings partially support the hypothesis that potential host species with weak defences are more susceptible to infection and the deleterious effects of evolving parasites than potential hosts with strong defences.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[],"research_interests":[{"id":159,"name":"Microbiology","url":"https://www.academia.edu/Documents/in/Microbiology"},{"id":164,"name":"Parasitology","url":"https://www.academia.edu/Documents/in/Parasitology"},{"id":2702,"name":"Immune response","url":"https://www.academia.edu/Documents/in/Immune_response"},{"id":2749,"name":"Animal Behavior","url":"https://www.academia.edu/Documents/in/Animal_Behavior"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine"},{"id":29974,"name":"Disease susceptibility","url":"https://www.academia.edu/Documents/in/Disease_susceptibility"},{"id":38884,"name":"Applied Animal Behavior","url":"https://www.academia.edu/Documents/in/Applied_Animal_Behavior"},{"id":53663,"name":"HSP","url":"https://www.academia.edu/Documents/in/HSP"},{"id":59813,"name":"Coloniality","url":"https://www.academia.edu/Documents/in/Coloniality"},{"id":397456,"name":"Body Mass","url":"https://www.academia.edu/Documents/in/Body_Mass"},{"id":537505,"name":"For","url":"https://www.academia.edu/Documents/in/For"},{"id":765872,"name":"Heat Shock Protein","url":"https://www.academia.edu/Documents/in/Heat_Shock_Protein"},{"id":1281375,"name":"Hematocrit","url":"https://www.academia.edu/Documents/in/Hematocrit"},{"id":1837288,"name":"Immunocompetence","url":"https://www.academia.edu/Documents/in/Immunocompetence"},{"id":2504686,"name":"Packed cell volume","url":"https://www.academia.edu/Documents/in/Packed_cell_volume"},{"id":3834134,"name":"leukocyte Count","url":"https://www.academia.edu/Documents/in/leukocyte_Count"},{"id":3880895,"name":"Bird diseases","url":"https://www.academia.edu/Documents/in/Bird_diseases"},{"id":3889473,"name":"fumigation","url":"https://www.academia.edu/Documents/in/fumigation"}],"urls":[{"id":31718705,"url":"https://api.elsevier.com/content/article/PII:S0020751901002430?httpAccept=text/xml"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304115"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304115/Northward_expansion_of_a_desert_bird_effects_of_climate_change"><img alt="Research paper thumbnail of Northward expansion of a desert bird: effects of climate change?" class="work-thumbnail" src="https://attachments.academia-assets.com/102608188/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304115/Northward_expansion_of_a_desert_bird_effects_of_climate_change">Northward expansion of a desert bird: effects of climate change?</a></div><div class="wp-workCard_item"><span>Ibis</span><span>, 2006</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="c2324e1f60a9d0ce81fbee6eb58e1d55" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608188,"asset_id":102304115,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608188/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304115"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304115"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304115; 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304114"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304114/Hindlimb_morphology_and_locomotor_performance_in_waders_an_evolutionary_approach"><img alt="Research paper thumbnail of Hindlimb morphology and locomotor performance in waders: an evolutionary approach" class="work-thumbnail" src="https://attachments.academia-assets.com/102608171/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304114/Hindlimb_morphology_and_locomotor_performance_in_waders_an_evolutionary_approach">Hindlimb morphology and locomotor performance in waders: an evolutionary approach</a></div><div class="wp-workCard_item"><span>Biological Journal of the Linnean Society</span><span>, 1999</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Locomotion performance (measured as stride frequency and stride length) was studied in 16 species...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Locomotion performance (measured as stride frequency and stride length) was studied in 16 species of waders. Differences in hindlimb morphoIo<gy (osteolocq and myolo<gy) were anaiysed among species. Evolutionary changes in both locomotion and morphological variables were analysed using comparative methods revealing the existence of some ecomorphological patterns relating these two sets of characters. Evolutionary changes in stride frequency were correlated with changes in the muscles M. iliotibialis cranialis, hf. iliotibiales lateralis and M. gastrocnemius, whereas changes in stride length showed correlated evolution with changes in the length of distal segments of the leg. M' e identify two different evolutionary strategies in locomotion of waders. One is a change in distal leg segments (skeletal system), an adaptive modification that increases stride length; the second is a change in the skeletal-muscular system, providing an increasc in muscular Performance (force or speed of contraction) in several muscles, and is an adaptation that increases stride frequency.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2e567165bed25bcd7e381205245ce6b9" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608171,"asset_id":102304114,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608171/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304114"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304114"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304114; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304114]").text(description); $(".js-view-count[data-work-id=102304114]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304114; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304114']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304114, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "2e567165bed25bcd7e381205245ce6b9" } } $('.js-work-strip[data-work-id=102304114]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304114,"title":"Hindlimb morphology and locomotor performance in waders: an evolutionary approach","translated_title":"","metadata":{"publisher":"Oxford University Press (OUP)","grobid_abstract":"Locomotion performance (measured as stride frequency and stride length) was studied in 16 species of waders. Differences in hindlimb morphoIo\u003cgy (osteolocq and myolo\u003cgy) were anaiysed among species. Evolutionary changes in both locomotion and morphological variables were analysed using comparative methods revealing the existence of some ecomorphological patterns relating these two sets of characters. Evolutionary changes in stride frequency were correlated with changes in the muscles M. iliotibialis cranialis, hf. iliotibiales lateralis and M. gastrocnemius, whereas changes in stride length showed correlated evolution with changes in the length of distal segments of the leg. M' e identify two different evolutionary strategies in locomotion of waders. 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Distinct tail whi...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">In birds, colourful and elaborate feathers are important traits in mate choice. Distinct tail white patches are present in many species of birds, but they remain little studied. Tail markings may indeed have a signal function because in many species males spread the tail offering a good view of these markings to females during courtship behaviour. Here, we investigated whether white tail spots in male rock sparrow, Petronia petronia, play a role in mate choice. In a free-living population of rock sparrows, we found a reduction in white tail spots size as the breeding season progressed due to abrasion, which was expected if tail spots act as a reliable quality indicator (i.e. a handicap). The same reduction was found under captive conditions, and males in worse condition (individuals that lost more weight) abraded a bigger part of white. This suggests that white tail markings are an indicator of male quality. In captivity, we measured female preference for males differing in white patch size in a mate choice experiment. The experimental reduction of the size of the males' white spots resulted in a lower sexual interest by females. During courtship display, male rock sparrow shows a yellow breast patch (a carotenoid-based, sexually selected ornament) together with the white spots in the tail. The sizes of these two traits are positively correlated, but only the abraded white area in the tail correlates with a surrogate of individual quality (lost of weight). In conclusion, we can assert that the size of the white spots is preferred by female rock sparrows and it is a part of a multiple signal system.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="4da1fd64cb7da511368764902bc6bcca" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608184,"asset_id":102304113,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608184/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304113"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304113"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304113; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304113]").text(description); $(".js-view-count[data-work-id=102304113]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304113; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304113']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304113, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "4da1fd64cb7da511368764902bc6bcca" } } $('.js-work-strip[data-work-id=102304113]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304113,"title":"White tail markings are an indicator of quality and affect mate preference in rock sparrows","translated_title":"","metadata":{"publisher":"Springer Science and Business Media LLC","grobid_abstract":"In birds, colourful and elaborate feathers are important traits in mate choice. Distinct tail white patches are present in many species of birds, but they remain little studied. Tail markings may indeed have a signal function because in many species males spread the tail offering a good view of these markings to females during courtship behaviour. Here, we investigated whether white tail spots in male rock sparrow, Petronia petronia, play a role in mate choice. In a free-living population of rock sparrows, we found a reduction in white tail spots size as the breeding season progressed due to abrasion, which was expected if tail spots act as a reliable quality indicator (i.e. a handicap). The same reduction was found under captive conditions, and males in worse condition (individuals that lost more weight) abraded a bigger part of white. This suggests that white tail markings are an indicator of male quality. In captivity, we measured female preference for males differing in white patch size in a mate choice experiment. The experimental reduction of the size of the males' white spots resulted in a lower sexual interest by females. During courtship display, male rock sparrow shows a yellow breast patch (a carotenoid-based, sexually selected ornament) together with the white spots in the tail. The sizes of these two traits are positively correlated, but only the abraded white area in the tail correlates with a surrogate of individual quality (lost of weight). In conclusion, we can assert that the size of the white spots is preferred by female rock sparrows and it is a part of a multiple signal system.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Behavioral Ecology and Sociobiology","grobid_abstract_attachment_id":102608184},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304113/White_tail_markings_are_an_indicator_of_quality_and_affect_mate_preference_in_rock_sparrows","translated_internal_url":"","created_at":"2023-05-24T12:03:45.350-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608184,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608184/thumbnails/1.jpg","file_name":"Griggio_20et_20al.2011.BES.pdf","download_url":"https://www.academia.edu/attachments/102608184/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"White_tail_markings_are_an_indicator_of.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608184/Griggio_20et_20al.2011.BES-libre.pdf?1684956977=\u0026response-content-disposition=attachment%3B+filename%3DWhite_tail_markings_are_an_indicator_of.pdf\u0026Expires=1734038537\u0026Signature=TBlrkLpyAFrBvW1YfMNlv5YMIhVnRwpAnodH8L8hzrM5COCy9GU1oR-a4E4ZvVYAN-Pqa2F1CtTi~HbVsD89WpIs-nnIMmdQI~xJ7kIenUo43dsDZD2zQkKyW52UqrJsMS70UR6IFxevg1JETF-xxlFLNvoGsCSXsECA3IJ8fQS0D22gnxXr8xcTMZ-u-KVL-IfdBP8hvDPL7v181TzoHSfXAoqpR-sL5CXFgNWOO1hPl0fk3ZyHcGAznFbdAaYtGnc7UOjiitQhwtdE3wWYa37Q0q9dp1PlQs3HJBSf-aEP6sFb21XyfFThALhF7tQa1DQ7YlyPXP05-BCwq~MKCA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"White_tail_markings_are_an_indicator_of_quality_and_affect_mate_preference_in_rock_sparrows","translated_slug":"","page_count":10,"language":"en","content_type":"Work","summary":"In birds, colourful and elaborate feathers are important traits in mate choice. Distinct tail white patches are present in many species of birds, but they remain little studied. Tail markings may indeed have a signal function because in many species males spread the tail offering a good view of these markings to females during courtship behaviour. Here, we investigated whether white tail spots in male rock sparrow, Petronia petronia, play a role in mate choice. In a free-living population of rock sparrows, we found a reduction in white tail spots size as the breeding season progressed due to abrasion, which was expected if tail spots act as a reliable quality indicator (i.e. a handicap). The same reduction was found under captive conditions, and males in worse condition (individuals that lost more weight) abraded a bigger part of white. This suggests that white tail markings are an indicator of male quality. In captivity, we measured female preference for males differing in white patch size in a mate choice experiment. The experimental reduction of the size of the males' white spots resulted in a lower sexual interest by females. During courtship display, male rock sparrow shows a yellow breast patch (a carotenoid-based, sexually selected ornament) together with the white spots in the tail. The sizes of these two traits are positively correlated, but only the abraded white area in the tail correlates with a surrogate of individual quality (lost of weight). In conclusion, we can assert that the size of the white spots is preferred by female rock sparrows and it is a part of a multiple signal system.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608184,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608184/thumbnails/1.jpg","file_name":"Griggio_20et_20al.2011.BES.pdf","download_url":"https://www.academia.edu/attachments/102608184/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"White_tail_markings_are_an_indicator_of.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608184/Griggio_20et_20al.2011.BES-libre.pdf?1684956977=\u0026response-content-disposition=attachment%3B+filename%3DWhite_tail_markings_are_an_indicator_of.pdf\u0026Expires=1734038537\u0026Signature=TBlrkLpyAFrBvW1YfMNlv5YMIhVnRwpAnodH8L8hzrM5COCy9GU1oR-a4E4ZvVYAN-Pqa2F1CtTi~HbVsD89WpIs-nnIMmdQI~xJ7kIenUo43dsDZD2zQkKyW52UqrJsMS70UR6IFxevg1JETF-xxlFLNvoGsCSXsECA3IJ8fQS0D22gnxXr8xcTMZ-u-KVL-IfdBP8hvDPL7v181TzoHSfXAoqpR-sL5CXFgNWOO1hPl0fk3ZyHcGAznFbdAaYtGnc7UOjiitQhwtdE3wWYa37Q0q9dp1PlQs3HJBSf-aEP6sFb21XyfFThALhF7tQa1DQ7YlyPXP05-BCwq~MKCA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":4299,"name":"Mate Choice","url":"https://www.academia.edu/Documents/in/Mate_Choice"},{"id":7044,"name":"Sexual Selection","url":"https://www.academia.edu/Documents/in/Sexual_Selection"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":14483,"name":"Animal Ecology","url":"https://www.academia.edu/Documents/in/Animal_Ecology"},{"id":25730,"name":"Behavioral Ecology","url":"https://www.academia.edu/Documents/in/Behavioral_Ecology"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":58054,"name":"Environmental Sciences","url":"https://www.academia.edu/Documents/in/Environmental_Sciences"},{"id":168647,"name":"Patch Size","url":"https://www.academia.edu/Documents/in/Patch_Size"},{"id":202571,"name":"Mate Preference","url":"https://www.academia.edu/Documents/in/Mate_Preference"},{"id":913924,"name":"Preference","url":"https://www.academia.edu/Documents/in/Preference"},{"id":957707,"name":"Condition dependence","url":"https://www.academia.edu/Documents/in/Condition_dependence"},{"id":1303968,"name":"Female Preference","url":"https://www.academia.edu/Documents/in/Female_Preference"},{"id":2452539,"name":"Breeding season","url":"https://www.academia.edu/Documents/in/Breeding_season"}],"urls":[{"id":31718702,"url":"http://link.springer.com/content/pdf/10.1007/s00265-010-1067-0.pdf"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304112"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304112/Convergence_in_Aerially_Feeding_Insectivorous_Birds"><img alt="Research paper thumbnail of Convergence in Aerially Feeding Insectivorous Birds" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304112/Convergence_in_Aerially_Feeding_Insectivorous_Birds">Convergence in Aerially Feeding Insectivorous Birds</a></div><div class="wp-workCard_item"><span>Netherlands Journal of Zoology</span><span>, 1994</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">... Koenig, Bonn; Institut fiir Haustierkunde, Kiel. D. Bryant kindly provided us the data of for...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">... Koenig, Bonn; Institut fiir Haustierkunde, Kiel. D. Bryant kindly provided us the data of foraging behaviour of pratincoles. A. Keast, M. Mckitrick, BC Livezey, R J. Raikow and three anonimous referees made valuable comments on the first draft of the manuscript. A. ...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304112"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304112"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304112; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304112]").text(description); $(".js-view-count[data-work-id=102304112]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304112; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304112']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304112, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=102304112]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304112,"title":"Convergence in Aerially Feeding Insectivorous Birds","translated_title":"","metadata":{"abstract":"... Koenig, Bonn; Institut fiir Haustierkunde, Kiel. D. Bryant kindly provided us the data of foraging behaviour of pratincoles. A. Keast, M. Mckitrick, BC Livezey, R J. Raikow and three anonimous referees made valuable comments on the first draft of the manuscript. A. ...","publisher":"Brill Academic Publishers","publication_date":{"day":null,"month":null,"year":1994,"errors":{}},"publication_name":"Netherlands Journal of Zoology"},"translated_abstract":"... Koenig, Bonn; Institut fiir Haustierkunde, Kiel. D. Bryant kindly provided us the data of foraging behaviour of pratincoles. A. Keast, M. Mckitrick, BC Livezey, R J. Raikow and three anonimous referees made valuable comments on the first draft of the manuscript. A. ...","internal_url":"https://www.academia.edu/102304112/Convergence_in_Aerially_Feeding_Insectivorous_Birds","translated_internal_url":"","created_at":"2023-05-24T12:03:45.088-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"Convergence_in_Aerially_Feeding_Insectivorous_Birds","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"... Koenig, Bonn; Institut fiir Haustierkunde, Kiel. D. Bryant kindly provided us the data of foraging behaviour of pratincoles. A. Keast, M. Mckitrick, BC Livezey, R J. Raikow and three anonimous referees made valuable comments on the first draft of the manuscript. A. ...","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[],"research_interests":[{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":9047,"name":"Osteology","url":"https://www.academia.edu/Documents/in/Osteology"},{"id":15124,"name":"Convergence","url":"https://www.academia.edu/Documents/in/Convergence"},{"id":41843,"name":"Ecomorphology","url":"https://www.academia.edu/Documents/in/Ecomorphology"},{"id":56474,"name":"Foraging","url":"https://www.academia.edu/Documents/in/Foraging"},{"id":85916,"name":"Theoretical Morphology (in Biology)","url":"https://www.academia.edu/Documents/in/Theoretical_Morphology_in_Biology_"},{"id":489572,"name":"Convergent Evolution","url":"https://www.academia.edu/Documents/in/Convergent_Evolution"},{"id":550697,"name":"Phylogenetic Tree","url":"https://www.academia.edu/Documents/in/Phylogenetic_Tree"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> </div><div class="profile--tab_content_container js-tab-pane tab-pane" data-section-id="17917687" id="papers"><div class="js-work-strip profile--work_container" data-work-id="102304129"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304129/Differences_in_daily_mass_gain_between_subordinate_species_are_explained_by_differences_in_ecological_plasticity"><img alt="Research paper thumbnail of Differences in daily mass gain between subordinate species are explained by differences in ecological plasticity" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304129/Differences_in_daily_mass_gain_between_subordinate_species_are_explained_by_differences_in_ecological_plasticity">Differences in daily mass gain between subordinate species are explained by differences in ecological plasticity</a></div><div class="wp-workCard_item"><span>脡coscience</span><span>, 2001</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to co...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to combat harsh environmental conditions and the drastic reduction in predictability of resource access. High fat reserves provide some benefits related to starvation-risk reduction, but also imply some costs related to increased predation risk. In general, subordinate species should increase their level of fat reserves in response to the unpredictability of resource access when in competition with dominants. However, the magnitude of such reserve increases could differ between subordinate species if opportunity of access to resources varies interspecifically in relation to differences in niche breadth due to differences in morphology. We tested the hypothesis that subordinate species (Parus cristatus) with decreased access to food will accumulate more fat than subordinate species (Parus ater) with greater opportunities. Results supported the prediction. We found that crested tit, the species with lower ecological plasticity and thus less access to food under competition, stores more fat daily than the coal tit, the species with higher ecological plasticity owing to its ability to forage while upside down.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304129"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304129"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304129; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304129]").text(description); $(".js-view-count[data-work-id=102304129]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304129; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304129']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304129, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=102304129]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304129,"title":"Differences in daily mass gain between subordinate species are explained by differences in ecological plasticity","translated_title":"","metadata":{"abstract":"ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to combat harsh environmental conditions and the drastic reduction in predictability of resource access. High fat reserves provide some benefits related to starvation-risk reduction, but also imply some costs related to increased predation risk. In general, subordinate species should increase their level of fat reserves in response to the unpredictability of resource access when in competition with dominants. However, the magnitude of such reserve increases could differ between subordinate species if opportunity of access to resources varies interspecifically in relation to differences in niche breadth due to differences in morphology. We tested the hypothesis that subordinate species (Parus cristatus) with decreased access to food will accumulate more fat than subordinate species (Parus ater) with greater opportunities. Results supported the prediction. We found that crested tit, the species with lower ecological plasticity and thus less access to food under competition, stores more fat daily than the coal tit, the species with higher ecological plasticity owing to its ability to forage while upside down.","publisher":"Informa UK Limited","publication_date":{"day":null,"month":null,"year":2001,"errors":{}},"publication_name":"脡coscience"},"translated_abstract":"ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to combat harsh environmental conditions and the drastic reduction in predictability of resource access. High fat reserves provide some benefits related to starvation-risk reduction, but also imply some costs related to increased predation risk. In general, subordinate species should increase their level of fat reserves in response to the unpredictability of resource access when in competition with dominants. However, the magnitude of such reserve increases could differ between subordinate species if opportunity of access to resources varies interspecifically in relation to differences in niche breadth due to differences in morphology. We tested the hypothesis that subordinate species (Parus cristatus) with decreased access to food will accumulate more fat than subordinate species (Parus ater) with greater opportunities. Results supported the prediction. We found that crested tit, the species with lower ecological plasticity and thus less access to food under competition, stores more fat daily than the coal tit, the species with higher ecological plasticity owing to its ability to forage while upside down.","internal_url":"https://www.academia.edu/102304129/Differences_in_daily_mass_gain_between_subordinate_species_are_explained_by_differences_in_ecological_plasticity","translated_internal_url":"","created_at":"2023-05-24T12:03:53.183-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"Differences_in_daily_mass_gain_between_subordinate_species_are_explained_by_differences_in_ecological_plasticity","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"ABSTRACT During winter, small birds in temperate zones increase their internal fat reserves to combat harsh environmental conditions and the drastic reduction in predictability of resource access. High fat reserves provide some benefits related to starvation-risk reduction, but also imply some costs related to increased predation risk. In general, subordinate species should increase their level of fat reserves in response to the unpredictability of resource access when in competition with dominants. However, the magnitude of such reserve increases could differ between subordinate species if opportunity of access to resources varies interspecifically in relation to differences in niche breadth due to differences in morphology. We tested the hypothesis that subordinate species (Parus cristatus) with decreased access to food will accumulate more fat than subordinate species (Parus ater) with greater opportunities. Results supported the prediction. We found that crested tit, the species with lower ecological plasticity and thus less access to food under competition, stores more fat daily than the coal tit, the species with higher ecological plasticity owing to its ability to forage while upside down.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[],"research_interests":[{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology"},{"id":192581,"name":"Food Availability","url":"https://www.academia.edu/Documents/in/Food_Availability"},{"id":564878,"name":"Body Weight","url":"https://www.academia.edu/Documents/in/Body_Weight"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304128"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304128/Morphological_molecular_and_phylogenetic_analyses_of_the_spirurid_nematode_Stegophorus_macronectes_Johnston_and_Mawson_1942_"><img alt="Research paper thumbnail of Morphological, molecular and phylogenetic analyses of the spirurid nematode Stegophorus macronectes (Johnston & Mawson, 1942)" class="work-thumbnail" src="https://attachments.academia-assets.com/102608199/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304128/Morphological_molecular_and_phylogenetic_analyses_of_the_spirurid_nematode_Stegophorus_macronectes_Johnston_and_Mawson_1942_">Morphological, molecular and phylogenetic analyses of the spirurid nematode Stegophorus macronectes (Johnston & Mawson, 1942)</a></div><div class="wp-workCard_item"><span>Journal of helminthology</span><span>, Jan 14, 2015</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Stegophorus macronectes (Johnston & Mawson, 1942) is a gastrointestinal parasite found in Antarct...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Stegophorus macronectes (Johnston & Mawson, 1942) is a gastrointestinal parasite found in Antarctic seabirds. The original description of the species, which was based only on females, is poor and fragmented with some unclear diagnostic characters. This study provides new morphometric and molecular data on this previously poorly described parasite. Nuclear rDNA sequences (18S, 5.8S, 28S and internal transcribed spacer (ITS) regions) were isolated from S. macronectes specimens collected from the chinstrap penguin Pygoscelis antarctica Forster on Deception Island, Antarctica. Using 18S rDNA sequences, phylogenetic analyses (maximum likelihood, maximum parsimony and Bayesian inference) of the order Spirurida were performed to determine the phylogenetic location of this species. Primer pairs of the ITS regions were designed for genus-level identification of specimens, regardless of their cycle, as an alternative to coprological methods. The utility of this molecular method for identifica...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="99fd26adee82333dfbf0249ca83d9765" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608199,"asset_id":102304128,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608199/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNiw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304128"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304128"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304128; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304128]").text(description); $(".js-view-count[data-work-id=102304128]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304128; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304128']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304128, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "99fd26adee82333dfbf0249ca83d9765" } } $('.js-work-strip[data-work-id=102304128]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304128,"title":"Morphological, molecular and phylogenetic analyses of the spirurid nematode Stegophorus macronectes (Johnston \u0026 Mawson, 1942)","translated_title":"","metadata":{"abstract":"Stegophorus macronectes (Johnston \u0026 Mawson, 1942) is a gastrointestinal parasite found in Antarctic seabirds. The original description of the species, which was based only on females, is poor and fragmented with some unclear diagnostic characters. This study provides new morphometric and molecular data on this previously poorly described parasite. Nuclear rDNA sequences (18S, 5.8S, 28S and internal transcribed spacer (ITS) regions) were isolated from S. macronectes specimens collected from the chinstrap penguin Pygoscelis antarctica Forster on Deception Island, Antarctica. Using 18S rDNA sequences, phylogenetic analyses (maximum likelihood, maximum parsimony and Bayesian inference) of the order Spirurida were performed to determine the phylogenetic location of this species. Primer pairs of the ITS regions were designed for genus-level identification of specimens, regardless of their cycle, as an alternative to coprological methods. The utility of this molecular method for identifica...","publication_date":{"day":14,"month":1,"year":2015,"errors":{}},"publication_name":"Journal of helminthology"},"translated_abstract":"Stegophorus macronectes (Johnston \u0026 Mawson, 1942) is a gastrointestinal parasite found in Antarctic seabirds. The original description of the species, which was based only on females, is poor and fragmented with some unclear diagnostic characters. This study provides new morphometric and molecular data on this previously poorly described parasite. Nuclear rDNA sequences (18S, 5.8S, 28S and internal transcribed spacer (ITS) regions) were isolated from S. macronectes specimens collected from the chinstrap penguin Pygoscelis antarctica Forster on Deception Island, Antarctica. Using 18S rDNA sequences, phylogenetic analyses (maximum likelihood, maximum parsimony and Bayesian inference) of the order Spirurida were performed to determine the phylogenetic location of this species. Primer pairs of the ITS regions were designed for genus-level identification of specimens, regardless of their cycle, as an alternative to coprological methods. The utility of this molecular method for identifica...","internal_url":"https://www.academia.edu/102304128/Morphological_molecular_and_phylogenetic_analyses_of_the_spirurid_nematode_Stegophorus_macronectes_Johnston_and_Mawson_1942_","translated_internal_url":"","created_at":"2023-05-24T12:03:50.515-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608199,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608199/thumbnails/1.jpg","file_name":"s0022149x1500021820230524-1-qvgx0t.pdf","download_url":"https://www.academia.edu/attachments/102608199/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNiw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Morphological_molecular_and_phylogenetic.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608199/s0022149x1500021820230524-1-qvgx0t-libre.pdf?1684956976=\u0026response-content-disposition=attachment%3B+filename%3DMorphological_molecular_and_phylogenetic.pdf\u0026Expires=1734038536\u0026Signature=HpFAmcbRZUe4612bI7s-0c~~sVCd0dGgibP4trgZvKv3g03usxlK8T7A5P8aj63vAz7TnMZNlrXg8xOtKhSj2e7p8IMHksFUSkvOE7PX4YPcoU9PxJd-y26~milT639rbnsSKoyWeg46FOtoo6sIa5YXiipQoKorp6rz4F5ncYlb3kZc2QFQmw5hfNonajFtr4noPW~fhST2NMN9wlmFmNUEh8WaipkmCLxdLmqmxuel6Cd-uXG4rTS2W0XNE~fZlzim7oevZe4CLSwGGuU-nrPIXXjQ2AKppXCkEmBOis7cWIXDFzRp1mHeSRCwdSGD63OEii9bt0-U~1L4HsrZiQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Morphological_molecular_and_phylogenetic_analyses_of_the_spirurid_nematode_Stegophorus_macronectes_Johnston_and_Mawson_1942_","translated_slug":"","page_count":9,"language":"en","content_type":"Work","summary":"Stegophorus macronectes (Johnston \u0026 Mawson, 1942) is a gastrointestinal parasite found in Antarctic seabirds. The original description of the species, which was based only on females, is poor and fragmented with some unclear diagnostic characters. This study provides new morphometric and molecular data on this previously poorly described parasite. Nuclear rDNA sequences (18S, 5.8S, 28S and internal transcribed spacer (ITS) regions) were isolated from S. macronectes specimens collected from the chinstrap penguin Pygoscelis antarctica Forster on Deception Island, Antarctica. Using 18S rDNA sequences, phylogenetic analyses (maximum likelihood, maximum parsimony and Bayesian inference) of the order Spirurida were performed to determine the phylogenetic location of this species. Primer pairs of the ITS regions were designed for genus-level identification of specimens, regardless of their cycle, as an alternative to coprological methods. 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Most such studies of immune responses in wild birds have been carried out on nestlings and breeding adults, while few have reported on immune responses in wintering birds. Here, we report sex differences in the cellmediated immune response assessed by the phytohaemagglutinin injection assay in a population of great tits Parus major during winter. Females showed higher level of immune response than males. As far as we know this is the first time that cell-mediated immune response has been reported in wintering birds.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304127"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304127"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304127; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304127]").text(description); $(".js-view-count[data-work-id=102304127]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304127; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304127']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304127, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=102304127]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304127,"title":"Sex differences in the T-cell-mediated immune response in wintering great tits Parus major","translated_title":"","metadata":{"abstract":"ABSTRACT Although sex differences in immune response have been reported in domestic animals, in which females generally show greater immune responses than males, studies of such differences in wild organisms including birds are still scarce. Most such studies of immune responses in wild birds have been carried out on nestlings and breeding adults, while few have reported on immune responses in wintering birds. Here, we report sex differences in the cellmediated immune response assessed by the phytohaemagglutinin injection assay in a population of great tits Parus major during winter. Females showed higher level of immune response than males. As far as we know this is the first time that cell-mediated immune response has been reported in wintering birds."},"translated_abstract":"ABSTRACT Although sex differences in immune response have been reported in domestic animals, in which females generally show greater immune responses than males, studies of such differences in wild organisms including birds are still scarce. Most such studies of immune responses in wild birds have been carried out on nestlings and breeding adults, while few have reported on immune responses in wintering birds. Here, we report sex differences in the cellmediated immune response assessed by the phytohaemagglutinin injection assay in a population of great tits Parus major during winter. Females showed higher level of immune response than males. As far as we know this is the first time that cell-mediated immune response has been reported in wintering birds.","internal_url":"https://www.academia.edu/102304127/Sex_differences_in_the_T_cell_mediated_immune_response_in_wintering_great_tits_Parus_major","translated_internal_url":"","created_at":"2023-05-24T12:03:50.349-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"Sex_differences_in_the_T_cell_mediated_immune_response_in_wintering_great_tits_Parus_major","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"ABSTRACT Although sex differences in immune response have been reported in domestic animals, in which females generally show greater immune responses than males, studies of such differences in wild organisms including birds are still scarce. Most such studies of immune responses in wild birds have been carried out on nestlings and breeding adults, while few have reported on immune responses in wintering birds. Here, we report sex differences in the cellmediated immune response assessed by the phytohaemagglutinin injection assay in a population of great tits Parus major during winter. Females showed higher level of immune response than males. As far as we know this is the first time that cell-mediated immune response has been reported in wintering birds.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[],"research_interests":[{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":292936,"name":"Parus","url":"https://www.academia.edu/Documents/in/Parus"},{"id":324154,"name":"Immune system","url":"https://www.academia.edu/Documents/in/Immune_system"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304126"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304126/Trace_and_toxic_elements_in_three_species_of_Antarctic_penguins_A_preliminary_research"><img alt="Research paper thumbnail of Trace and toxic elements in three species of Antarctic penguins: A preliminary research" class="work-thumbnail" src="https://attachments.academia-assets.com/102608192/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304126/Trace_and_toxic_elements_in_three_species_of_Antarctic_penguins_A_preliminary_research">Trace and toxic elements in three species of Antarctic penguins: A preliminary research</a></div><div class="wp-workCard_item"><span>Toxicology Letters</span><span>, 2008</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">tar albino rats and mice were used to assess sub-acute and acute toxicity respectively. For the a...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">tar albino rats and mice were used to assess sub-acute and acute toxicity respectively. For the acute toxicity on mice we used increasing (0.6; 1.3; 2.5; 5; 10 g/kg) oral doses of dry extract dissolved in 1 ml of water for B. pilosa and R. vomitoria while the two F. macrophylla extracts were dissolved in 1 ml of corn oil. This experiment lasted 14 days during which mice had 1 ml of the daily dose. Control group received water only. The animals had regular supply of food and water. The method described by Miller and Tainter (1944) was used to determine the DL50. For the sub acute toxicity, rats were given daily for 28 days oral doses of 0.3, 0.6 and 1.3 g/kg extract of R. vomitoria and F. macrophylla extracts; extract of B. pilosa were given at the daily dose of 1.3, 2.5 and 5 g/kg. The animals had regular supply of food and water too. At the end of the experiment the animals were sacrificed after an overnight fast. Blood was collected for hematological and biochemical analysis. Liver and kidney were removed from each rat for histopatholgical examinations (Gabe, 1968). Results: Acute toxicity showed that B. pilosa was less toxic. R. vomitoria and F. macrophylla (stem bark and root bark) had a DL50 of 2.87 and 3.1 respectively. F. macrophylla roots decreased significantly red blood cells and white blood cells counts. R. vomitoria seemed to increase blood cholesterol. B. pilosa and F. macrophylla roots at the higher doses was hyperglycemic. The activities of all the enzymes used as markers of liver cytolysis increased showing a side effect of these plants on the liver. The concentrations of kidney markers like creatinin and urea did not change. Histopathological examinations of the liver and the kidney confirmed the hepatotoxicity of the extracts and reveal some histological change on the kidney. Conclusion: This study showed that these medicinal plants can be dangerous if used intensively and for a long time by traditional healers.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="24f2cb243c990b22e1ffebb15cbae589" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608192,"asset_id":102304126,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608192/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304126"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304126"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304126; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304126]").text(description); $(".js-view-count[data-work-id=102304126]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304126; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304126']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304126, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "24f2cb243c990b22e1ffebb15cbae589" } } $('.js-work-strip[data-work-id=102304126]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304126,"title":"Trace and toxic elements in three species of Antarctic penguins: A preliminary research","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"tar albino rats and mice were used to assess sub-acute and acute toxicity respectively. For the acute toxicity on mice we used increasing (0.6; 1.3; 2.5; 5; 10 g/kg) oral doses of dry extract dissolved in 1 ml of water for B. pilosa and R. vomitoria while the two F. macrophylla extracts were dissolved in 1 ml of corn oil. This experiment lasted 14 days during which mice had 1 ml of the daily dose. Control group received water only. The animals had regular supply of food and water. The method described by Miller and Tainter (1944) was used to determine the DL50. For the sub acute toxicity, rats were given daily for 28 days oral doses of 0.3, 0.6 and 1.3 g/kg extract of R. vomitoria and F. macrophylla extracts; extract of B. pilosa were given at the daily dose of 1.3, 2.5 and 5 g/kg. The animals had regular supply of food and water too. At the end of the experiment the animals were sacrificed after an overnight fast. Blood was collected for hematological and biochemical analysis. Liver and kidney were removed from each rat for histopatholgical examinations (Gabe, 1968). Results: Acute toxicity showed that B. pilosa was less toxic. R. vomitoria and F. macrophylla (stem bark and root bark) had a DL50 of 2.87 and 3.1 respectively. F. macrophylla roots decreased significantly red blood cells and white blood cells counts. R. vomitoria seemed to increase blood cholesterol. B. pilosa and F. macrophylla roots at the higher doses was hyperglycemic. The activities of all the enzymes used as markers of liver cytolysis increased showing a side effect of these plants on the liver. The concentrations of kidney markers like creatinin and urea did not change. Histopathological examinations of the liver and the kidney confirmed the hepatotoxicity of the extracts and reveal some histological change on the kidney. Conclusion: This study showed that these medicinal plants can be dangerous if used intensively and for a long time by traditional healers.","publication_date":{"day":null,"month":null,"year":2008,"errors":{}},"publication_name":"Toxicology Letters","grobid_abstract_attachment_id":102608192},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304126/Trace_and_toxic_elements_in_three_species_of_Antarctic_penguins_A_preliminary_research","translated_internal_url":"","created_at":"2023-05-24T12:03:49.800-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608192,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608192/thumbnails/1.jpg","file_name":"j.toxlet.2008.06.18220230524-1-jzi6bk.pdf","download_url":"https://www.academia.edu/attachments/102608192/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Trace_and_toxic_elements_in_three_specie.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608192/j.toxlet.2008.06.18220230524-1-jzi6bk-libre.pdf?1684956975=\u0026response-content-disposition=attachment%3B+filename%3DTrace_and_toxic_elements_in_three_specie.pdf\u0026Expires=1734038537\u0026Signature=P3OBaDSPNeTzWeyoZQpHI2IUrCYVejbGj5txb3rsLFfwyW0YHmLkxRj2H~58NB~XZOPCtAtwgdRtRN1FrPe-f1Z5DRfLZi96AXV3FtSeM1YifU95Fi3bQBHyASrmpe7ka7f08XZhm-HBKLMSFQlq6cc3aw-Z5R3nhOsraNesRvMNgJGRVtHV1qwXYGVTpPpi9uAZO0LYOVqPG44llxYup8fFVAO3vwluCUL-mZMOs3vwlJjYRidmn1mxbdPjNpm5G2RZ1dwPYHSZFoLlUQNEbFcKULVXzGPl9UJJSzskgvQ3eZ1kzY7Er1YXL7COZ077fk2vyGcMNm9kY95uvCuliQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Trace_and_toxic_elements_in_three_species_of_Antarctic_penguins_A_preliminary_research","translated_slug":"","page_count":1,"language":"en","content_type":"Work","summary":"tar albino rats and mice were used to assess sub-acute and acute toxicity respectively. 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Results: Acute toxicity showed that B. pilosa was less toxic. R. vomitoria and F. macrophylla (stem bark and root bark) had a DL50 of 2.87 and 3.1 respectively. F. macrophylla roots decreased significantly red blood cells and white blood cells counts. R. vomitoria seemed to increase blood cholesterol. B. pilosa and F. macrophylla roots at the higher doses was hyperglycemic. The activities of all the enzymes used as markers of liver cytolysis increased showing a side effect of these plants on the liver. The concentrations of kidney markers like creatinin and urea did not change. Histopathological examinations of the liver and the kidney confirmed the hepatotoxicity of the extracts and reveal some histological change on the kidney. Conclusion: This study showed that these medicinal plants can be dangerous if used intensively and for a long time by traditional healers.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608192,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608192/thumbnails/1.jpg","file_name":"j.toxlet.2008.06.18220230524-1-jzi6bk.pdf","download_url":"https://www.academia.edu/attachments/102608192/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Trace_and_toxic_elements_in_three_specie.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608192/j.toxlet.2008.06.18220230524-1-jzi6bk-libre.pdf?1684956975=\u0026response-content-disposition=attachment%3B+filename%3DTrace_and_toxic_elements_in_three_specie.pdf\u0026Expires=1734038537\u0026Signature=P3OBaDSPNeTzWeyoZQpHI2IUrCYVejbGj5txb3rsLFfwyW0YHmLkxRj2H~58NB~XZOPCtAtwgdRtRN1FrPe-f1Z5DRfLZi96AXV3FtSeM1YifU95Fi3bQBHyASrmpe7ka7f08XZhm-HBKLMSFQlq6cc3aw-Z5R3nhOsraNesRvMNgJGRVtHV1qwXYGVTpPpi9uAZO0LYOVqPG44llxYup8fFVAO3vwluCUL-mZMOs3vwlJjYRidmn1mxbdPjNpm5G2RZ1dwPYHSZFoLlUQNEbFcKULVXzGPl9UJJSzskgvQ3eZ1kzY7Er1YXL7COZ077fk2vyGcMNm9kY95uvCuliQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":402,"name":"Environmental Science","url":"https://www.academia.edu/Documents/in/Environmental_Science"},{"id":15836,"name":"Environmental Chemistry","url":"https://www.academia.edu/Documents/in/Environmental_Chemistry"},{"id":1957240,"name":"ENVIRONMENTAL SCIENCE AND MANAGEMENT","url":"https://www.academia.edu/Documents/in/ENVIRONMENTAL_SCIENCE_AND_MANAGEMENT"},{"id":3789884,"name":"Pharmacology and pharmaceutical sciences","url":"https://www.academia.edu/Documents/in/Pharmacology_and_pharmaceutical_sciences"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304125"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304125/The_Effect_of_Copper_on_the_Color_of_Shrimps_Redder_Is_Not_Always_Healthier"><img alt="Research paper thumbnail of The Effect of Copper on the Color of Shrimps: Redder Is Not Always Healthier" class="work-thumbnail" src="https://attachments.academia-assets.com/102608198/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304125/The_Effect_of_Copper_on_the_Color_of_Shrimps_Redder_Is_Not_Always_Healthier">The Effect of Copper on the Color of Shrimps: Redder Is Not Always Healthier</a></div><div class="wp-workCard_item"><span>PLoS ONE</span><span>, 2014</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">The objective of this research is to test the effects of copper on the color of pacific white shr...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">The objective of this research is to test the effects of copper on the color of pacific white shrimp (Litopenaeus vannamei) in vivo. Forty-eight shrimps (L. vannamei) were exposed to a low concentration of copper (1 mg/L; experimental treatment) and forty-eight shrimps were used as controls (no copper added to the water). As a result of this experiment, it was found that shrimps with more copper are significantly redder than those designated as controls (hue (500-700 nm) : P = 0.0015; red chroma (625-700 nm) : P,0.0001). These results indicate that redder color may result from exposure to copper and challenge the commonly held view that highly pigmented shrimps are healthier than pale shrimps.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="ea73a4499e970bcdfa6ccf4a52e16cd3" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608198,"asset_id":102304125,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608198/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304125"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304125"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304125; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304125]").text(description); $(".js-view-count[data-work-id=102304125]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304125; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304125']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304125, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "ea73a4499e970bcdfa6ccf4a52e16cd3" } } $('.js-work-strip[data-work-id=102304125]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304125,"title":"The Effect of Copper on the Color of Shrimps: Redder Is Not Always Healthier","translated_title":"","metadata":{"publisher":"Public Library of Science (PLoS)","grobid_abstract":"The objective of this research is to test the effects of copper on the color of pacific white shrimp (Litopenaeus vannamei) in vivo. Forty-eight shrimps (L. vannamei) were exposed to a low concentration of copper (1 mg/L; experimental treatment) and forty-eight shrimps were used as controls (no copper added to the water). As a result of this experiment, it was found that shrimps with more copper are significantly redder than those designated as controls (hue (500-700 nm) : P = 0.0015; red chroma (625-700 nm) : P,0.0001). These results indicate that redder color may result from exposure to copper and challenge the commonly held view that highly pigmented shrimps are healthier than pale shrimps.","publication_date":{"day":null,"month":null,"year":2014,"errors":{}},"publication_name":"PLoS ONE","grobid_abstract_attachment_id":102608198},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304125/The_Effect_of_Copper_on_the_Color_of_Shrimps_Redder_Is_Not_Always_Healthier","translated_internal_url":"","created_at":"2023-05-24T12:03:49.547-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608198,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608198/thumbnails/1.jpg","file_name":"a500f65ac16a279f40f808f9200da12630bc.pdf","download_url":"https://www.academia.edu/attachments/102608198/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_Effect_of_Copper_on_the_Color_of_Shr.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608198/a500f65ac16a279f40f808f9200da12630bc-libre.pdf?1684956980=\u0026response-content-disposition=attachment%3B+filename%3DThe_Effect_of_Copper_on_the_Color_of_Shr.pdf\u0026Expires=1734038537\u0026Signature=JN~3xMPwLHOsjRKgVKDJLph2Qr2HUxjqMlzH4TuHJh3eUZPSn-gxXiTp3hU8xpnuSHXIXzapheNj1P8tFuMx03qG9v0Y2VSDtSugojIZjNoZluuZp1HV1cLnICIw2gONRPpSpo-IgYDn6ZMbhAASMFxN-bc5yiCV3LXdFaPKTDE6lj9lEoESOPoHTgd7OvyUdXWPt7skszWlgMfZ5JGeVTD-AneCFFTZ1PA7ThIKKg8D~7zAGzbB~82O9-hkD1vQ6W3x~cfP0Q3XiiSfrxm-tNr3gBleYLH~vXDxC~vxFxvV5swD7CeXDNwLdqJMtHUSkdV5fHifPpZdbhjAUEH77w__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"The_Effect_of_Copper_on_the_Color_of_Shrimps_Redder_Is_Not_Always_Healthier","translated_slug":"","page_count":5,"language":"en","content_type":"Work","summary":"The objective of this research is to test the effects of copper on the color of pacific white shrimp (Litopenaeus vannamei) in vivo. Forty-eight shrimps (L. vannamei) were exposed to a low concentration of copper (1 mg/L; experimental treatment) and forty-eight shrimps were used as controls (no copper added to the water). As a result of this experiment, it was found that shrimps with more copper are significantly redder than those designated as controls (hue (500-700 nm) : P = 0.0015; red chroma (625-700 nm) : P,0.0001). These results indicate that redder color may result from exposure to copper and challenge the commonly held view that highly pigmented shrimps are healthier than pale shrimps.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608198,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608198/thumbnails/1.jpg","file_name":"a500f65ac16a279f40f808f9200da12630bc.pdf","download_url":"https://www.academia.edu/attachments/102608198/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_Effect_of_Copper_on_the_Color_of_Shr.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608198/a500f65ac16a279f40f808f9200da12630bc-libre.pdf?1684956980=\u0026response-content-disposition=attachment%3B+filename%3DThe_Effect_of_Copper_on_the_Color_of_Shr.pdf\u0026Expires=1734038537\u0026Signature=JN~3xMPwLHOsjRKgVKDJLph2Qr2HUxjqMlzH4TuHJh3eUZPSn-gxXiTp3hU8xpnuSHXIXzapheNj1P8tFuMx03qG9v0Y2VSDtSugojIZjNoZluuZp1HV1cLnICIw2gONRPpSpo-IgYDn6ZMbhAASMFxN-bc5yiCV3LXdFaPKTDE6lj9lEoESOPoHTgd7OvyUdXWPt7skszWlgMfZ5JGeVTD-AneCFFTZ1PA7ThIKKg8D~7zAGzbB~82O9-hkD1vQ6W3x~cfP0Q3XiiSfrxm-tNr3gBleYLH~vXDxC~vxFxvV5swD7CeXDNwLdqJMtHUSkdV5fHifPpZdbhjAUEH77w__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":1877,"name":"Pigmentation","url":"https://www.academia.edu/Documents/in/Pigmentation"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":14406,"name":"Health","url":"https://www.academia.edu/Documents/in/Health"},{"id":20001,"name":"SHRIMP","url":"https://www.academia.edu/Documents/in/SHRIMP"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine"},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary"},{"id":38756,"name":"Color Perception","url":"https://www.academia.edu/Documents/in/Color_Perception"},{"id":61175,"name":"Colour and Light","url":"https://www.academia.edu/Documents/in/Colour_and_Light"},{"id":76714,"name":"Color","url":"https://www.academia.edu/Documents/in/Color"},{"id":80692,"name":"Copper","url":"https://www.academia.edu/Documents/in/Copper"},{"id":115368,"name":"Colour","url":"https://www.academia.edu/Documents/in/Colour"},{"id":126599,"name":"Caridean Shrimps","url":"https://www.academia.edu/Documents/in/Caridean_Shrimps"},{"id":197947,"name":"Chemical Toxicity","url":"https://www.academia.edu/Documents/in/Chemical_Toxicity"},{"id":220780,"name":"PLoS one","url":"https://www.academia.edu/Documents/in/PLoS_one"},{"id":262432,"name":"Penaeid prawns","url":"https://www.academia.edu/Documents/in/Penaeid_prawns"},{"id":736321,"name":"Environmental Pollutants","url":"https://www.academia.edu/Documents/in/Environmental_Pollutants"},{"id":1003876,"name":"Biology on Shrimps","url":"https://www.academia.edu/Documents/in/Biology_on_Shrimps"},{"id":1435468,"name":"Penaeidae","url":"https://www.academia.edu/Documents/in/Penaeidae"},{"id":1453712,"name":"Penaeid Shrimp","url":"https://www.academia.edu/Documents/in/Penaeid_Shrimp"}],"urls":[{"id":31718712,"url":"http://dx.plos.org/10.1371/journal.pone.0107673"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304124"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304124/Haematocrit_values_in_chinstrap_penguins_Pygoscelis_antarctica_variation_with_age_and_reproductive_status"><img alt="Research paper thumbnail of Haematocrit values in chinstrap penguins (Pygoscelis antarctica): variation with age and reproductive status" class="work-thumbnail" src="https://attachments.academia-assets.com/102608194/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304124/Haematocrit_values_in_chinstrap_penguins_Pygoscelis_antarctica_variation_with_age_and_reproductive_status">Haematocrit values in chinstrap penguins (Pygoscelis antarctica): variation with age and reproductive status</a></div><div class="wp-workCard_item"><span>Polar Biology</span><span>, 1997</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">We studied haematocrit variation with age and reproductive status in chinstrap penguins (Pygoscel...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">We studied haematocrit variation with age and reproductive status in chinstrap penguins (Pygoscelis antarctica) at Deception Island, South Shetlands. There was a significant difference in haematocrit values between different age groups (adults vs nestlings and juveniles). Adults had a higher haematocrit value than juveniles and nestlings and juveniles had higher haematocrit values than nestlings. There was also a significant difference in haematocrit values between adults of different status (breeding vs moulting). Breeding adults had higher haematocrit values than moulting adults. The observed differences between age groups were thought to be the result of different oxygen demands due to exercise. The observed differences between adults of different status could reflect the different demands associated with reproduction and moult fasting.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5bb480fced6e2544a32b161ba64e4d54" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608194,"asset_id":102304124,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608194/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304124"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304124"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304124; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304124]").text(description); $(".js-view-count[data-work-id=102304124]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304124; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304124']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304124, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "5bb480fced6e2544a32b161ba64e4d54" } } $('.js-work-strip[data-work-id=102304124]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304124,"title":"Haematocrit values in chinstrap penguins (Pygoscelis antarctica): variation with age and reproductive status","translated_title":"","metadata":{"publisher":"Springer Science and Business Media LLC","grobid_abstract":"We studied haematocrit variation with age and reproductive status in chinstrap penguins (Pygoscelis antarctica) at Deception Island, South Shetlands. There was a significant difference in haematocrit values between different age groups (adults vs nestlings and juveniles). Adults had a higher haematocrit value than juveniles and nestlings and juveniles had higher haematocrit values than nestlings. There was also a significant difference in haematocrit values between adults of different status (breeding vs moulting). Breeding adults had higher haematocrit values than moulting adults. The observed differences between age groups were thought to be the result of different oxygen demands due to exercise. The observed differences between adults of different status could reflect the different demands associated with reproduction and moult fasting.","publication_date":{"day":null,"month":null,"year":1997,"errors":{}},"publication_name":"Polar Biology","grobid_abstract_attachment_id":102608194},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304124/Haematocrit_values_in_chinstrap_penguins_Pygoscelis_antarctica_variation_with_age_and_reproductive_status","translated_internal_url":"","created_at":"2023-05-24T12:03:49.217-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608194,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608194/thumbnails/1.jpg","file_name":"polar_biol_17.pdf","download_url":"https://www.academia.edu/attachments/102608194/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Haematocrit_values_in_chinstrap_penguins.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608194/polar_biol_17-libre.pdf?1684956977=\u0026response-content-disposition=attachment%3B+filename%3DHaematocrit_values_in_chinstrap_penguins.pdf\u0026Expires=1734038537\u0026Signature=KpaA4848eWyK2HLFKqWG7ihRvRK9s3HxjFx-lj1ywOguI4sKdzsFnvC9Nbhd7ifbzykPBXp34xAQeoSsadiLBpnSEC8CkgXaXc2BHcSRfdCLXoP8XJxE12T-3UqyjGR1JzpnBURSloXO3Wf913WKlAHhVv98iV4W0UIiHarCSHm9slTGqRpiVmZtq7ht2gML0L2BCwDM~EDWc23IPEC~XHF~x-XkQxWNke96pVpMpdpIJopCMvkIfzGKzCUAJkXjQ3BCYxwN7sQDKTVh6Rvnr3IyI2S~8pxNNIjNGzM4kqlHtWXobEQD-b9OPWyeePAWcBGlKdIF26lwDJKqMZknjA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Haematocrit_values_in_chinstrap_penguins_Pygoscelis_antarctica_variation_with_age_and_reproductive_status","translated_slug":"","page_count":3,"language":"en","content_type":"Work","summary":"We studied haematocrit variation with age and reproductive status in chinstrap penguins (Pygoscelis antarctica) at Deception Island, South Shetlands. There was a significant difference in haematocrit values between different age groups (adults vs nestlings and juveniles). Adults had a higher haematocrit value than juveniles and nestlings and juveniles had higher haematocrit values than nestlings. There was also a significant difference in haematocrit values between adults of different status (breeding vs moulting). Breeding adults had higher haematocrit values than moulting adults. The observed differences between age groups were thought to be the result of different oxygen demands due to exercise. The observed differences between adults of different status could reflect the different demands associated with reproduction and moult fasting.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608194,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608194/thumbnails/1.jpg","file_name":"polar_biol_17.pdf","download_url":"https://www.academia.edu/attachments/102608194/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Haematocrit_values_in_chinstrap_penguins.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608194/polar_biol_17-libre.pdf?1684956977=\u0026response-content-disposition=attachment%3B+filename%3DHaematocrit_values_in_chinstrap_penguins.pdf\u0026Expires=1734038537\u0026Signature=KpaA4848eWyK2HLFKqWG7ihRvRK9s3HxjFx-lj1ywOguI4sKdzsFnvC9Nbhd7ifbzykPBXp34xAQeoSsadiLBpnSEC8CkgXaXc2BHcSRfdCLXoP8XJxE12T-3UqyjGR1JzpnBURSloXO3Wf913WKlAHhVv98iV4W0UIiHarCSHm9slTGqRpiVmZtq7ht2gML0L2BCwDM~EDWc23IPEC~XHF~x-XkQxWNke96pVpMpdpIJopCMvkIfzGKzCUAJkXjQ3BCYxwN7sQDKTVh6Rvnr3IyI2S~8pxNNIjNGzM4kqlHtWXobEQD-b9OPWyeePAWcBGlKdIF26lwDJKqMZknjA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":512395,"name":"Polar Biology","url":"https://www.academia.edu/Documents/in/Polar_Biology"},{"id":1470936,"name":"Age Groups","url":"https://www.academia.edu/Documents/in/Age_Groups"}],"urls":[{"id":31718711,"url":"http://link.springer.com/content/pdf/10.1007/s003000050099.pdf"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304123"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304123/Beak_colouration_as_a_possible_sexual_ornament_in_gentoo_penguins_sexual_dichromatism_and_relationship_to_body_condition"><img alt="Research paper thumbnail of Beak colouration as a possible sexual ornament in gentoo penguins: sexual dichromatism and relationship to body condition" class="work-thumbnail" src="https://attachments.academia-assets.com/102608191/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304123/Beak_colouration_as_a_possible_sexual_ornament_in_gentoo_penguins_sexual_dichromatism_and_relationship_to_body_condition">Beak colouration as a possible sexual ornament in gentoo penguins: sexual dichromatism and relationship to body condition</a></div><div class="wp-workCard_item"><span>Polar Biology</span><span>, 2009</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Gentoo penguins (Pygoscelis papua) have conspicuous red beak spots, the function of which is curr...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Gentoo penguins (Pygoscelis papua) have conspicuous red beak spots, the function of which is currently unknown. We hypothesized that beak spots might be sexual ornaments and investigated sexual dichromatism, assortative mating and the possible relationship between beak spot colouration and body condition. Beak colouration was measured with a portable spectroradiometer in 19 breeding pairs of gentoo penguin. Body mass and body mass relative to structural body size were used as estimates of body condition. We found that beak spots were sexually dichromatic, as they were more UV in males and more violet in females, but males and females did not mate assortatively in relation to beak spot colouration. Body condition was strongly related to red colouration in males, with individuals in good condition having redder beaks and individuals in poor condition more orange beaks. The beaks of males in good condition were also brighter. Body condition was not signiWcantly related to beak spot colouration in females, so females might show red beak spots because of genetic correlation with the male trait. These results suggest that the red colour of the beak spot has the potential to be a secondary sexual character in males. Interpretation of the sexual dichromatism in the UV colour will require further knowledge of the capability of gentoo penguins to discriminate small diVerences in UV wavelengths. In any case, experimental manipulation of beak colouration will be needed to ascertain the role of this trait.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="e95a05bc7a4a129f5fd9326f8c7eeffb" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608191,"asset_id":102304123,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608191/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304123"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304123"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304123; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304123]").text(description); $(".js-view-count[data-work-id=102304123]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304123; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304123']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304123, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "e95a05bc7a4a129f5fd9326f8c7eeffb" } } $('.js-work-strip[data-work-id=102304123]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304123,"title":"Beak colouration as a possible sexual ornament in gentoo penguins: sexual dichromatism and relationship to body condition","translated_title":"","metadata":{"publisher":"Springer Nature","grobid_abstract":"Gentoo penguins (Pygoscelis papua) have conspicuous red beak spots, the function of which is currently unknown. We hypothesized that beak spots might be sexual ornaments and investigated sexual dichromatism, assortative mating and the possible relationship between beak spot colouration and body condition. Beak colouration was measured with a portable spectroradiometer in 19 breeding pairs of gentoo penguin. Body mass and body mass relative to structural body size were used as estimates of body condition. We found that beak spots were sexually dichromatic, as they were more UV in males and more violet in females, but males and females did not mate assortatively in relation to beak spot colouration. Body condition was strongly related to red colouration in males, with individuals in good condition having redder beaks and individuals in poor condition more orange beaks. The beaks of males in good condition were also brighter. Body condition was not signiWcantly related to beak spot colouration in females, so females might show red beak spots because of genetic correlation with the male trait. These results suggest that the red colour of the beak spot has the potential to be a secondary sexual character in males. Interpretation of the sexual dichromatism in the UV colour will require further knowledge of the capability of gentoo penguins to discriminate small diVerences in UV wavelengths. In any case, experimental manipulation of beak colouration will be needed to ascertain the role of this trait.","publication_date":{"day":null,"month":null,"year":2009,"errors":{}},"publication_name":"Polar Biology","grobid_abstract_attachment_id":102608191},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304123/Beak_colouration_as_a_possible_sexual_ornament_in_gentoo_penguins_sexual_dichromatism_and_relationship_to_body_condition","translated_internal_url":"","created_at":"2023-05-24T12:03:49.041-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608191,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608191/thumbnails/1.jpg","file_name":"0850.pdf","download_url":"https://www.academia.edu/attachments/102608191/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Beak_colouration_as_a_possible_sexual_or.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608191/0850-libre.pdf?1684956983=\u0026response-content-disposition=attachment%3B+filename%3DBeak_colouration_as_a_possible_sexual_or.pdf\u0026Expires=1734038537\u0026Signature=U9k7ULs6esTkmIc0DPuEtFyg3~AazuVuZg5SO3bb~pyQ3Qcz0a11VvMWfnDZhjfykjX-jLCzCrbpKswlGNHN1bAs1UclFtFJTPhdsfq6TGJ2BlW1oMOp2W45Mgeb2KJcMm5~MSiGRgo6Ne7RxSkRXkYrZW1qkBLQWODc-~daCYpv05NjdTvEmh6BMb0~kyZyIZCBtfARC96W6V73Cc456O19Kt5Sz6RRytZlL~1eA4Iedws0WPB6cgP9lkdP42rqqiB19NQGZqQSy-CbH1f56PJWw-azpMM~GfX333TAzxlX81baRTcghCNoo0DFnvgk1QWyRf~rRkVhUy9p9ii2QA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Beak_colouration_as_a_possible_sexual_ornament_in_gentoo_penguins_sexual_dichromatism_and_relationship_to_body_condition","translated_slug":"","page_count":10,"language":"en","content_type":"Work","summary":"Gentoo penguins (Pygoscelis papua) have conspicuous red beak spots, the function of which is currently unknown. We hypothesized that beak spots might be sexual ornaments and investigated sexual dichromatism, assortative mating and the possible relationship between beak spot colouration and body condition. Beak colouration was measured with a portable spectroradiometer in 19 breeding pairs of gentoo penguin. Body mass and body mass relative to structural body size were used as estimates of body condition. We found that beak spots were sexually dichromatic, as they were more UV in males and more violet in females, but males and females did not mate assortatively in relation to beak spot colouration. Body condition was strongly related to red colouration in males, with individuals in good condition having redder beaks and individuals in poor condition more orange beaks. The beaks of males in good condition were also brighter. Body condition was not signiWcantly related to beak spot colouration in females, so females might show red beak spots because of genetic correlation with the male trait. These results suggest that the red colour of the beak spot has the potential to be a secondary sexual character in males. Interpretation of the sexual dichromatism in the UV colour will require further knowledge of the capability of gentoo penguins to discriminate small diVerences in UV wavelengths. In any case, experimental manipulation of beak colouration will be needed to ascertain the role of this trait.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608191,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608191/thumbnails/1.jpg","file_name":"0850.pdf","download_url":"https://www.academia.edu/attachments/102608191/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Beak_colouration_as_a_possible_sexual_or.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608191/0850-libre.pdf?1684956983=\u0026response-content-disposition=attachment%3B+filename%3DBeak_colouration_as_a_possible_sexual_or.pdf\u0026Expires=1734038537\u0026Signature=U9k7ULs6esTkmIc0DPuEtFyg3~AazuVuZg5SO3bb~pyQ3Qcz0a11VvMWfnDZhjfykjX-jLCzCrbpKswlGNHN1bAs1UclFtFJTPhdsfq6TGJ2BlW1oMOp2W45Mgeb2KJcMm5~MSiGRgo6Ne7RxSkRXkYrZW1qkBLQWODc-~daCYpv05NjdTvEmh6BMb0~kyZyIZCBtfARC96W6V73Cc456O19Kt5Sz6RRytZlL~1eA4Iedws0WPB6cgP9lkdP42rqqiB19NQGZqQSy-CbH1f56PJWw-azpMM~GfX333TAzxlX81baRTcghCNoo0DFnvgk1QWyRf~rRkVhUy9p9ii2QA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":7044,"name":"Sexual Selection","url":"https://www.academia.edu/Documents/in/Sexual_Selection"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":12532,"name":"Assortative Mating","url":"https://www.academia.edu/Documents/in/Assortative_Mating"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":87546,"name":"Ultraviolet","url":"https://www.academia.edu/Documents/in/Ultraviolet"},{"id":151905,"name":"Body Condition","url":"https://www.academia.edu/Documents/in/Body_Condition"},{"id":164264,"name":"Body Size","url":"https://www.academia.edu/Documents/in/Body_Size"},{"id":397456,"name":"Body Mass","url":"https://www.academia.edu/Documents/in/Body_Mass"},{"id":512395,"name":"Polar Biology","url":"https://www.academia.edu/Documents/in/Polar_Biology"},{"id":1315957,"name":"Black Spot","url":"https://www.academia.edu/Documents/in/Black_Spot"},{"id":1822192,"name":"Genetic Correlation","url":"https://www.academia.edu/Documents/in/Genetic_Correlation"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304122"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304122/Population_variability_in_heat_shock_proteins_among_three_Antarctic_penguin_species"><img alt="Research paper thumbnail of Population variability in heat shock proteins among three Antarctic penguin species" class="work-thumbnail" src="https://attachments.academia-assets.com/102608193/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304122/Population_variability_in_heat_shock_proteins_among_three_Antarctic_penguin_species">Population variability in heat shock proteins among three Antarctic penguin species</a></div><div class="wp-workCard_item"><span>Polar Biology</span><span>, 2007</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Heat shock proteins (HSPs) are synthesised under stressful conditions such as exposure to elevate...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Heat shock proteins (HSPs) are synthesised under stressful conditions such as exposure to elevated temperatures, contamination, free radicals, UV light or pathophysiological states resulting from parasites and/or pathogens. HSPs function to protect cells by means of modulation of protein folding. In Antarctica, these proteins have been studied in such organisms as protozoa and Wshes, without attention to geographical variation. We studied the variation of HSP70 and HSP60 levels in Gentoo, Adelie and Chinstrap penguins among diVerent populations along the Antarctic Peninsula from King George Island (62掳15袌S) to Avian Island (67掳46袌S). Our results show that the northern population of Gentoo penguin showed higher levels of HSP70 and HSP60 than the southern population. High temperature, human impact and immunity as a proxy for parasites and diseases in northern locations could explain such variation. Adelie penguin only showed signiWcant geographical variation in HSP70, increasing north to south, a pattern perhaps related to increased UV radiation and decreased temperatures from north to south. Chinstrap penguin shows no population diVerences in the variation in neither HSP70 nor HSP60, although HSP70 showed marginally signiWcant diVerences. Sexual diVerences in the level of these proteins are also discussed.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="7e518570a5930752e7a0e039c5692418" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608193,"asset_id":102304122,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608193/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304122"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304122"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304122; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304122]").text(description); $(".js-view-count[data-work-id=102304122]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304122; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304122']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304122, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "7e518570a5930752e7a0e039c5692418" } } $('.js-work-strip[data-work-id=102304122]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304122,"title":"Population variability in heat shock proteins among three Antarctic penguin species","translated_title":"","metadata":{"publisher":"Springer Science and Business Media LLC","grobid_abstract":"Heat shock proteins (HSPs) are synthesised under stressful conditions such as exposure to elevated temperatures, contamination, free radicals, UV light or pathophysiological states resulting from parasites and/or pathogens. HSPs function to protect cells by means of modulation of protein folding. In Antarctica, these proteins have been studied in such organisms as protozoa and Wshes, without attention to geographical variation. We studied the variation of HSP70 and HSP60 levels in Gentoo, Adelie and Chinstrap penguins among diVerent populations along the Antarctic Peninsula from King George Island (62掳15袌S) to Avian Island (67掳46袌S). Our results show that the northern population of Gentoo penguin showed higher levels of HSP70 and HSP60 than the southern population. High temperature, human impact and immunity as a proxy for parasites and diseases in northern locations could explain such variation. Adelie penguin only showed signiWcant geographical variation in HSP70, increasing north to south, a pattern perhaps related to increased UV radiation and decreased temperatures from north to south. Chinstrap penguin shows no population diVerences in the variation in neither HSP70 nor HSP60, although HSP70 showed marginally signiWcant diVerences. Sexual diVerences in the level of these proteins are also discussed.","publication_date":{"day":null,"month":null,"year":2007,"errors":{}},"publication_name":"Polar Biology","grobid_abstract_attachment_id":102608193},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304122/Population_variability_in_heat_shock_proteins_among_three_Antarctic_penguin_species","translated_internal_url":"","created_at":"2023-05-24T12:03:47.621-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608193,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608193/thumbnails/1.jpg","file_name":"hsp_20penguins_20polar_20biology.pdf","download_url":"https://www.academia.edu/attachments/102608193/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Population_variability_in_heat_shock_pro.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608193/hsp_20penguins_20polar_20biology-libre.pdf?1684956980=\u0026response-content-disposition=attachment%3B+filename%3DPopulation_variability_in_heat_shock_pro.pdf\u0026Expires=1734038537\u0026Signature=eIZx1vEsqmhnPdBPiPR9zXCawZkjIJb33qC40SrVeHtrq3AR2LwdG6Na1~5Z8y475xeiS7DPN1y0X6PTDOlqrkG~BVg0-9LgVnnu1H7a65HJzw9orx7C0JNzeOXL-z-yIGLnZChcXOhnE0FDaTpPxwPIIOJHBb1GxyYHrox1seC8aT7Cecest-DeYVQqAnMfDECGaaiqIfGzltJe0gPkbcxYOKmrALGD2Ggw8Yjgk9P59uaoi7SfRuppWvp6J2u8kfRIelz6P~5Xu0PRf~zy3keQY9-GoE-iSZ8J4Iy3fMbJm8q5t19Um2j5pC0XHCbT0M1nCyC2E1L8Z4Xux~wgGg__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Population_variability_in_heat_shock_proteins_among_three_Antarctic_penguin_species","translated_slug":"","page_count":6,"language":"en","content_type":"Work","summary":"Heat shock proteins (HSPs) are synthesised under stressful conditions such as exposure to elevated temperatures, contamination, free radicals, UV light or pathophysiological states resulting from parasites and/or pathogens. HSPs function to protect cells by means of modulation of protein folding. In Antarctica, these proteins have been studied in such organisms as protozoa and Wshes, without attention to geographical variation. We studied the variation of HSP70 and HSP60 levels in Gentoo, Adelie and Chinstrap penguins among diVerent populations along the Antarctic Peninsula from King George Island (62掳15袌S) to Avian Island (67掳46袌S). Our results show that the northern population of Gentoo penguin showed higher levels of HSP70 and HSP60 than the southern population. High temperature, human impact and immunity as a proxy for parasites and diseases in northern locations could explain such variation. Adelie penguin only showed signiWcant geographical variation in HSP70, increasing north to south, a pattern perhaps related to increased UV radiation and decreased temperatures from north to south. Chinstrap penguin shows no population diVerences in the variation in neither HSP70 nor HSP60, although HSP70 showed marginally signiWcant diVerences. Sexual diVerences in the level of these proteins are also discussed.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608193,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608193/thumbnails/1.jpg","file_name":"hsp_20penguins_20polar_20biology.pdf","download_url":"https://www.academia.edu/attachments/102608193/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Population_variability_in_heat_shock_pro.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608193/hsp_20penguins_20polar_20biology-libre.pdf?1684956980=\u0026response-content-disposition=attachment%3B+filename%3DPopulation_variability_in_heat_shock_pro.pdf\u0026Expires=1734038537\u0026Signature=eIZx1vEsqmhnPdBPiPR9zXCawZkjIJb33qC40SrVeHtrq3AR2LwdG6Na1~5Z8y475xeiS7DPN1y0X6PTDOlqrkG~BVg0-9LgVnnu1H7a65HJzw9orx7C0JNzeOXL-z-yIGLnZChcXOhnE0FDaTpPxwPIIOJHBb1GxyYHrox1seC8aT7Cecest-DeYVQqAnMfDECGaaiqIfGzltJe0gPkbcxYOKmrALGD2Ggw8Yjgk9P59uaoi7SfRuppWvp6J2u8kfRIelz6P~5Xu0PRf~zy3keQY9-GoE-iSZ8J4Iy3fMbJm8q5t19Um2j5pC0XHCbT0M1nCyC2E1L8Z4Xux~wgGg__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":3971,"name":"Protein Folding","url":"https://www.academia.edu/Documents/in/Protein_Folding"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":9729,"name":"Stress","url":"https://www.academia.edu/Documents/in/Stress"},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology"},{"id":44022,"name":"Free Radical","url":"https://www.academia.edu/Documents/in/Free_Radical"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":64336,"name":"Population","url":"https://www.academia.edu/Documents/in/Population"},{"id":112063,"name":"Uv Radiation","url":"https://www.academia.edu/Documents/in/Uv_Radiation"},{"id":133177,"name":"Temperature","url":"https://www.academia.edu/Documents/in/Temperature"},{"id":191117,"name":"High Temperature","url":"https://www.academia.edu/Documents/in/High_Temperature"},{"id":202690,"name":"Human impact","url":"https://www.academia.edu/Documents/in/Human_impact"},{"id":251795,"name":"Environmental Gradient","url":"https://www.academia.edu/Documents/in/Environmental_Gradient"},{"id":354340,"name":"Geographic Variation","url":"https://www.academia.edu/Documents/in/Geographic_Variation"},{"id":477100,"name":"UV light","url":"https://www.academia.edu/Documents/in/UV_light"},{"id":512395,"name":"Polar Biology","url":"https://www.academia.edu/Documents/in/Polar_Biology"},{"id":591410,"name":"Antarctic Peninsula","url":"https://www.academia.edu/Documents/in/Antarctic_Peninsula"},{"id":765872,"name":"Heat Shock Protein","url":"https://www.academia.edu/Documents/in/Heat_Shock_Protein"},{"id":1068737,"name":"Elevated Temperature","url":"https://www.academia.edu/Documents/in/Elevated_Temperature"}],"urls":[{"id":31718710,"url":"https://link.springer.com/content/pdf/10.1007/s00300-007-0284-0.pdf"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304121"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304121/Experimental_assessment_of_the_effects_of_gastrointestinal_parasites_on_offspring_quality_in_chinstrap_penguins_Pygoscelis_antarctica_"><img alt="Research paper thumbnail of Experimental assessment of the effects of gastrointestinal parasites on offspring quality in chinstrap penguins (Pygoscelis antarctica)" class="work-thumbnail" src="https://attachments.academia-assets.com/102608190/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304121/Experimental_assessment_of_the_effects_of_gastrointestinal_parasites_on_offspring_quality_in_chinstrap_penguins_Pygoscelis_antarctica_">Experimental assessment of the effects of gastrointestinal parasites on offspring quality in chinstrap penguins (Pygoscelis antarctica)</a></div><div class="wp-workCard_item"><span>Parasitology</span><span>, 2012</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their ...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their hosts. It has been hypothesized that parasites are scarcer and their overall effect on hosts is weaker at higher latitudes. Although Antarctic birds have relatively low numbers of parasites, their effect on host fitness has rarely been investigated. The effect of helminth parasitism on growth rate was experimentally studied in chinstrap penguin (Pygoscelis antarctica) nestlings. In a total of 22 two-nestling broods, 1 nestling was treated with anthelminthics (for cestodes and nematodes) while its sibling was left as a control. Increased growth rate was predicted in de-wormed nestlings compared to their siblings. As expected, 15 days after treatment, the experimental nestlings had increased body mass more than their siblings. These results show a non-negligible negative effect of helminth parasites on nestling body condition that would presumably affect future survival and thus fitness, a...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="755cbd43cf58274d225fcd5c9efba059" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608190,"asset_id":102304121,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608190/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304121"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304121"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304121; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304121]").text(description); $(".js-view-count[data-work-id=102304121]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304121; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304121']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304121, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "755cbd43cf58274d225fcd5c9efba059" } } $('.js-work-strip[data-work-id=102304121]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304121,"title":"Experimental assessment of the effects of gastrointestinal parasites on offspring quality in chinstrap penguins (Pygoscelis antarctica)","translated_title":"","metadata":{"abstract":"SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their hosts. It has been hypothesized that parasites are scarcer and their overall effect on hosts is weaker at higher latitudes. Although Antarctic birds have relatively low numbers of parasites, their effect on host fitness has rarely been investigated. The effect of helminth parasitism on growth rate was experimentally studied in chinstrap penguin (Pygoscelis antarctica) nestlings. In a total of 22 two-nestling broods, 1 nestling was treated with anthelminthics (for cestodes and nematodes) while its sibling was left as a control. Increased growth rate was predicted in de-wormed nestlings compared to their siblings. As expected, 15 days after treatment, the experimental nestlings had increased body mass more than their siblings. These results show a non-negligible negative effect of helminth parasites on nestling body condition that would presumably affect future survival and thus fitness, a...","publisher":"Cambridge University Press (CUP)","publication_date":{"day":null,"month":null,"year":2012,"errors":{}},"publication_name":"Parasitology"},"translated_abstract":"SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their hosts. It has been hypothesized that parasites are scarcer and their overall effect on hosts is weaker at higher latitudes. Although Antarctic birds have relatively low numbers of parasites, their effect on host fitness has rarely been investigated. The effect of helminth parasitism on growth rate was experimentally studied in chinstrap penguin (Pygoscelis antarctica) nestlings. In a total of 22 two-nestling broods, 1 nestling was treated with anthelminthics (for cestodes and nematodes) while its sibling was left as a control. Increased growth rate was predicted in de-wormed nestlings compared to their siblings. As expected, 15 days after treatment, the experimental nestlings had increased body mass more than their siblings. These results show a non-negligible negative effect of helminth parasites on nestling body condition that would presumably affect future survival and thus fitness, a...","internal_url":"https://www.academia.edu/102304121/Experimental_assessment_of_the_effects_of_gastrointestinal_parasites_on_offspring_quality_in_chinstrap_penguins_Pygoscelis_antarctica_","translated_internal_url":"","created_at":"2023-05-24T12:03:47.119-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608190,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608190/thumbnails/1.jpg","file_name":"61d7bb59467d3c6ccced1d41d5725b8e864c.pdf","download_url":"https://www.academia.edu/attachments/102608190/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Experimental_assessment_of_the_effects_o.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608190/61d7bb59467d3c6ccced1d41d5725b8e864c-libre.pdf?1684956977=\u0026response-content-disposition=attachment%3B+filename%3DExperimental_assessment_of_the_effects_o.pdf\u0026Expires=1734038537\u0026Signature=YGd0KIMYwe~~K6VnlQbnkPRZK5I-1he2zD9bz5CzRJMStAckIP0Anu7ASozjuyHSecTdbbhfKLG5LlyyKg8lhJz6vYukGEGaywfEBxhFxKnJ4aWrNsvskx1gTP428mqqK7zZzXxZu7WXhRJR5BfhV1cgwIVehB8-6kQ4opBK8m3p5FOkXmU9UllQkmk84xirYUtvLt3CWgaWuxhbcgRYGPGm9TsWlIBXGrRLmecBB887g2Mko7aPeae5TTW6E4fXfbbXGzxZoqAyzrh-R4hlRxrJccWc3JPwf7O2D~6cPG-Gb~nfKITA-CR-3COudu5sAsW6SX5y5El9~UL7PxlsNA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Experimental_assessment_of_the_effects_of_gastrointestinal_parasites_on_offspring_quality_in_chinstrap_penguins_Pygoscelis_antarctica_","translated_slug":"","page_count":6,"language":"en","content_type":"Work","summary":"SUMMARYParasites reduce host fitness and consequently impose strong selection pressures on their hosts. It has been hypothesized that parasites are scarcer and their overall effect on hosts is weaker at higher latitudes. Although Antarctic birds have relatively low numbers of parasites, their effect on host fitness has rarely been investigated. The effect of helminth parasitism on growth rate was experimentally studied in chinstrap penguin (Pygoscelis antarctica) nestlings. In a total of 22 two-nestling broods, 1 nestling was treated with anthelminthics (for cestodes and nematodes) while its sibling was left as a control. Increased growth rate was predicted in de-wormed nestlings compared to their siblings. As expected, 15 days after treatment, the experimental nestlings had increased body mass more than their siblings. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304120"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304120/Increase_in_a_heat_shock_protein_from_blood_cells_in_response_of_nestling_house_martins_Delichon_urbica_to_parasitism_an_experimental_approach"><img alt="Research paper thumbnail of Increase in a heat-shock protein from blood cells in response of nestling house martins ( Delichon urbica ) to parasitism: an experimental approach" class="work-thumbnail" src="https://attachments.academia-assets.com/102608186/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304120/Increase_in_a_heat_shock_protein_from_blood_cells_in_response_of_nestling_house_martins_Delichon_urbica_to_parasitism_an_experimental_approach">Increase in a heat-shock protein from blood cells in response of nestling house martins ( Delichon urbica ) to parasitism: an experimental approach</a></div><div class="wp-workCard_item"><span>Oecologia</span><span>, 1998</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Heat-shock proteins (HSPs) are synthesized by animals and plants in response to various stressors...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Heat-shock proteins (HSPs) are synthesized by animals and plants in response to various stressors. The level of the HSP60 stress protein was measured from the cell fraction of peripheral blood obtained from nestling house martins (Delichon urbica) to test whether ectoparasitism increased the concentration of stress protein. We assessed HSP from nestlings raised in nests previously treated with an insecticide or infested with 50 martin bugs (Oeciacus hirundinis). In addition, haematozoa infections were checked in blood smears. Nestlings from parasite-infested nests, or nestlings infected with trypanosomes, had increased levels of HSP in their blood cells. Nestling growth as determined from wing length was negatively related to HSP60 levels and within-brood variation in wing length increased with increasing levels of the stress protein independently of treatment and infection by trypanosomes. These results suggest HSPs may play a role in host-parasite interactions, and that they can be used reliably for measuring physiological responses to parasites.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="68d698b7729a9b08d04807e91a4aa66d" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608186,"asset_id":102304120,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608186/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304120"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304120"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304120; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304120]").text(description); $(".js-view-count[data-work-id=102304120]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304120; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304120']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304120, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "68d698b7729a9b08d04807e91a4aa66d" } } $('.js-work-strip[data-work-id=102304120]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304120,"title":"Increase in a heat-shock protein from blood cells in response of nestling house martins ( Delichon urbica ) to parasitism: an experimental approach","translated_title":"","metadata":{"publisher":"Springer Science and Business Media LLC","grobid_abstract":"Heat-shock proteins (HSPs) are synthesized by animals and plants in response to various stressors. 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Penguin chicks can reflect this potential impact in the rookeries during the breeding season. They also can reflect biomagnification phenomena since they are on the top of the Antarctic food chain. The concentrations of Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Cd and Pb were measured by ICP-MS in samples of liver, kidney, muscle, bone, feather and stomach content of gentoo, chinstrap and Ad茅lie penguin chicks (n = 15 individuals) collected opportunistically in the Islands of King George and Deception (South Shetland Islands, Antarctica). The detected levels of some trace elements were not as low as it could be expected in the isolated Antarctic region. Penguin chicks can be useful indicators of trace elements abundance in the study areas. Capsule: Carcasses of Antarctic penguin chicks were used to evaluate the bioavailability of trace elements in the Islands of King George and Deception.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="b6401fadcc13a3af111ee694d92f5392" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608189,"asset_id":102304119,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608189/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304119"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304119"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304119; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304119]").text(description); $(".js-view-count[data-work-id=102304119]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304119; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304119']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304119, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "b6401fadcc13a3af111ee694d92f5392" } } $('.js-work-strip[data-work-id=102304119]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304119,"title":"Monitoring trace elements in Antarctic penguin chicks from South Shetland Islands, Antarctica","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"The concentration of human activities in the near-shore ecosystems from the northern Antarctic Peninsula area can cause an increasing bioavailability of pollutants for the vulnerable Antarctic biota. Penguin chicks can reflect this potential impact in the rookeries during the breeding season. They also can reflect biomagnification phenomena since they are on the top of the Antarctic food chain. The concentrations of Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Cd and Pb were measured by ICP-MS in samples of liver, kidney, muscle, bone, feather and stomach content of gentoo, chinstrap and Ad茅lie penguin chicks (n = 15 individuals) collected opportunistically in the Islands of King George and Deception (South Shetland Islands, Antarctica). The detected levels of some trace elements were not as low as it could be expected in the isolated Antarctic region. Penguin chicks can be useful indicators of trace elements abundance in the study areas. Capsule: Carcasses of Antarctic penguin chicks were used to evaluate the bioavailability of trace elements in the Islands of King George and Deception.","publication_date":{"day":null,"month":null,"year":2013,"errors":{}},"publication_name":"Marine Pollution Bulletin","grobid_abstract_attachment_id":102608189},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304119/Monitoring_trace_elements_in_Antarctic_penguin_chicks_from_South_Shetland_Islands_Antarctica","translated_internal_url":"","created_at":"2023-05-24T12:03:46.658-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608189,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608189/thumbnails/1.jpg","file_name":"j.marpolbul.2013.01.00420230524-1-mp0fsa.pdf","download_url":"https://www.academia.edu/attachments/102608189/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Monitoring_trace_elements_in_Antarctic_p.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608189/j.marpolbul.2013.01.00420230524-1-mp0fsa-libre.pdf?1684956983=\u0026response-content-disposition=attachment%3B+filename%3DMonitoring_trace_elements_in_Antarctic_p.pdf\u0026Expires=1734038537\u0026Signature=fOILiMTheheVYUeCezg9F-MtnTEcqOyhTH~pTo18aWLGeI07tidT345sPBFczOBVkSyk1jUbgcXGwl49uvy-ADnaSbjpqn1p2AHGLxTsGpo85LPIN8oSUiC8pUOqFLoJj70dFTVfnglWSLNNFTdFPtzd5z4~gMiXhSoDm6~Xh1uhy-vjSgozKd-EG3Onczbyi4ldridp7vxBTv4qtRCxKKRCQTkk1LSVP4U-t~asn3C5omyI-tn7SO8liPVx5cZ0zh1dJA5U3amLxGuIzj25txrAi9sIolySbC0zyPBTSPP7zLRWOJtLjCYDvE0XGzeDqHcMQw3yYNEfC0HIWZElhw__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Monitoring_trace_elements_in_Antarctic_penguin_chicks_from_South_Shetland_Islands_Antarctica","translated_slug":"","page_count":9,"language":"en","content_type":"Work","summary":"The concentration of human activities in the near-shore ecosystems from the northern Antarctic Peninsula area can cause an increasing bioavailability of pollutants for the vulnerable Antarctic biota. Penguin chicks can reflect this potential impact in the rookeries during the breeding season. They also can reflect biomagnification phenomena since they are on the top of the Antarctic food chain. The concentrations of Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Cd and Pb were measured by ICP-MS in samples of liver, kidney, muscle, bone, feather and stomach content of gentoo, chinstrap and Ad茅lie penguin chicks (n = 15 individuals) collected opportunistically in the Islands of King George and Deception (South Shetland Islands, Antarctica). The detected levels of some trace elements were not as low as it could be expected in the isolated Antarctic region. Penguin chicks can be useful indicators of trace elements abundance in the study areas. Capsule: Carcasses of Antarctic penguin chicks were used to evaluate the bioavailability of trace elements in the Islands of King George and Deception.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608189,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608189/thumbnails/1.jpg","file_name":"j.marpolbul.2013.01.00420230524-1-mp0fsa.pdf","download_url":"https://www.academia.edu/attachments/102608189/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Monitoring_trace_elements_in_Antarctic_p.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608189/j.marpolbul.2013.01.00420230524-1-mp0fsa-libre.pdf?1684956983=\u0026response-content-disposition=attachment%3B+filename%3DMonitoring_trace_elements_in_Antarctic_p.pdf\u0026Expires=1734038537\u0026Signature=fOILiMTheheVYUeCezg9F-MtnTEcqOyhTH~pTo18aWLGeI07tidT345sPBFczOBVkSyk1jUbgcXGwl49uvy-ADnaSbjpqn1p2AHGLxTsGpo85LPIN8oSUiC8pUOqFLoJj70dFTVfnglWSLNNFTdFPtzd5z4~gMiXhSoDm6~Xh1uhy-vjSgozKd-EG3Onczbyi4ldridp7vxBTv4qtRCxKKRCQTkk1LSVP4U-t~asn3C5omyI-tn7SO8liPVx5cZ0zh1dJA5U3amLxGuIzj25txrAi9sIolySbC0zyPBTSPP7zLRWOJtLjCYDvE0XGzeDqHcMQw3yYNEfC0HIWZElhw__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":261,"name":"Geography","url":"https://www.academia.edu/Documents/in/Geography"},{"id":11801,"name":"Environmental Monitoring","url":"https://www.academia.edu/Documents/in/Environmental_Monitoring"},{"id":25445,"name":"Environmental Pollution","url":"https://www.academia.edu/Documents/in/Environmental_Pollution"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine"},{"id":28235,"name":"Multidisciplinary","url":"https://www.academia.edu/Documents/in/Multidisciplinary"},{"id":166010,"name":"Pollution","url":"https://www.academia.edu/Documents/in/Pollution"},{"id":224577,"name":"Trace Elements","url":"https://www.academia.edu/Documents/in/Trace_Elements"},{"id":255058,"name":"Metals","url":"https://www.academia.edu/Documents/in/Metals"},{"id":273728,"name":"Ciencias Biol贸gicas","url":"https://www.academia.edu/Documents/in/Ciencias_Biol%C3%B3gicas"},{"id":443558,"name":"Shetland","url":"https://www.academia.edu/Documents/in/Shetland"},{"id":736321,"name":"Environmental Pollutants","url":"https://www.academia.edu/Documents/in/Environmental_Pollutants"},{"id":827929,"name":"Conservaci贸n De La Biodiversidad","url":"https://www.academia.edu/Documents/in/Conservaci%C3%B3n_De_La_Biodiversidad"},{"id":834420,"name":"Biota","url":"https://www.academia.edu/Documents/in/Biota"},{"id":903559,"name":"Ense帽anza - Aprendizaje Ciencias Naturales Y Exactas","url":"https://www.academia.edu/Documents/in/Ensenanza_-_Aprendizaje_Ciencias_Naturales_Y_Exactas"},{"id":1454485,"name":"Spheniscidae","url":"https://www.academia.edu/Documents/in/Spheniscidae"},{"id":2606821,"name":"South Shetland Islands","url":"https://www.academia.edu/Documents/in/South_Shetland_Islands"}],"urls":[{"id":31718707,"url":"https://api.elsevier.com/content/article/PII:S0025326X13000064?httpAccept=text/xml"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304118"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304118/No_inbreeding_effects_on_body_size_in_two_captive_endangered_gazelles"><img alt="Research paper thumbnail of No inbreeding effects on body size in two captive endangered gazelles" class="work-thumbnail" src="https://attachments.academia-assets.com/102608187/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304118/No_inbreeding_effects_on_body_size_in_two_captive_endangered_gazelles">No inbreeding effects on body size in two captive endangered gazelles</a></div><div class="wp-workCard_item"><span>Mammalian Biology - Zeitschrift f眉r S盲ugetierkunde</span><span>, 2011</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Selection for body size is intricate, involving trade-offs between energy costs, reproductive out...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Selection for body size is intricate, involving trade-offs between energy costs, reproductive output, foraging efficiency, and interaction with other community members. In dimorphic, polygynous ungulates, body size is highly correlated with reproductive success in both sexes. Body size has been proposed as a potential phenotypic indicator of genetic change, in wild and in captive populations. We analysed the relationship between adult body size and inbreeding in two captive populations of endangered gazelles. Two estimates of inbreeding were used: individual inbreeding coefficient (F i) and individual increase in inbreeding (F i). Six cranial traits and eight post-cranial bones were measured in 87 Cuvier's gazelles and 97 Mohor gazelles. The average level of individual inbreeding found for the alive population of Cuvier's gazelle was 0.236 and for Mohor gazelle 0.260. Our study demonstrated that within our populations most variability in body size is explained by sex, but we have not found any evidence of inbreeding depression in this morphological trait. Our results are surprising in the light of a widely held belief that from an evolutionary point of view close inbreeding has deleterious effects. The great diversity of factors acting on the effects of inbreeding on trait values make difficult to provide a simple framework to understand them all, hence, we suggest fitness consequences of inbreeding has to be assessed considering the conditions under which one should expect inbreeding depression.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="7210bb7b471a85612180b6813129f976" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608187,"asset_id":102304118,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608187/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304118"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304118"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304118; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304118]").text(description); $(".js-view-count[data-work-id=102304118]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304118; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304118']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304118, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "7210bb7b471a85612180b6813129f976" } } $('.js-work-strip[data-work-id=102304118]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304118,"title":"No inbreeding effects on body size in two captive endangered gazelles","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"Selection for body size is intricate, involving trade-offs between energy costs, reproductive output, foraging efficiency, and interaction with other community members. In dimorphic, polygynous ungulates, body size is highly correlated with reproductive success in both sexes. Body size has been proposed as a potential phenotypic indicator of genetic change, in wild and in captive populations. We analysed the relationship between adult body size and inbreeding in two captive populations of endangered gazelles. Two estimates of inbreeding were used: individual inbreeding coefficient (F i) and individual increase in inbreeding (F i). Six cranial traits and eight post-cranial bones were measured in 87 Cuvier's gazelles and 97 Mohor gazelles. The average level of individual inbreeding found for the alive population of Cuvier's gazelle was 0.236 and for Mohor gazelle 0.260. Our study demonstrated that within our populations most variability in body size is explained by sex, but we have not found any evidence of inbreeding depression in this morphological trait. Our results are surprising in the light of a widely held belief that from an evolutionary point of view close inbreeding has deleterious effects. The great diversity of factors acting on the effects of inbreeding on trait values make difficult to provide a simple framework to understand them all, hence, we suggest fitness consequences of inbreeding has to be assessed considering the conditions under which one should expect inbreeding depression.","publication_date":{"day":null,"month":null,"year":2011,"errors":{}},"publication_name":"Mammalian Biology - Zeitschrift f眉r S盲ugetierkunde","grobid_abstract_attachment_id":102608187},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304118/No_inbreeding_effects_on_body_size_in_two_captive_endangered_gazelles","translated_internal_url":"","created_at":"2023-05-24T12:03:46.525-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608187,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608187/thumbnails/1.jpg","file_name":"j.mambio.2011.04.00220230524-1-38ahje.pdf","download_url":"https://www.academia.edu/attachments/102608187/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"No_inbreeding_effects_on_body_size_in_tw.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608187/j.mambio.2011.04.00220230524-1-38ahje-libre.pdf?1684956979=\u0026response-content-disposition=attachment%3B+filename%3DNo_inbreeding_effects_on_body_size_in_tw.pdf\u0026Expires=1734038537\u0026Signature=BTl1vgm~P7I5K5IlRT6XQRxhkzcA5K0jl84iV~d3ZFPTTUPmzrcAnJcaBz7xq4DM5KZibCm0u2fCy7DVw1pf0c6QnuoPOPo-gtVyQ9AYpxYCpgZmDVSKTikh7B8bl7C6T1wfuS2IwFrXHJxlwa~AHLHQbL9cGOZI4ezUS7Cj5RN1xLFsJaJUeyXO51ZSCxrJ7p4TY4dJY5SjuRUY9xdaCaQDopA8x~9t3FGcB9O~JY8Px2-jxy7NGLuGfBmsy89cPe7XEcsWJKY038OzTxX8wU0boAwyvH2otZw~bFtcmT1a4N2fuVr3sixqBMX1w10SyF-4tnFkSj5NbtgPDT9P9Q__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"No_inbreeding_effects_on_body_size_in_two_captive_endangered_gazelles","translated_slug":"","page_count":7,"language":"en","content_type":"Work","summary":"Selection for body size is intricate, involving trade-offs between energy costs, reproductive output, foraging efficiency, and interaction with other community members. In dimorphic, polygynous ungulates, body size is highly correlated with reproductive success in both sexes. Body size has been proposed as a potential phenotypic indicator of genetic change, in wild and in captive populations. We analysed the relationship between adult body size and inbreeding in two captive populations of endangered gazelles. Two estimates of inbreeding were used: individual inbreeding coefficient (F i) and individual increase in inbreeding (F i). Six cranial traits and eight post-cranial bones were measured in 87 Cuvier's gazelles and 97 Mohor gazelles. The average level of individual inbreeding found for the alive population of Cuvier's gazelle was 0.236 and for Mohor gazelle 0.260. Our study demonstrated that within our populations most variability in body size is explained by sex, but we have not found any evidence of inbreeding depression in this morphological trait. Our results are surprising in the light of a widely held belief that from an evolutionary point of view close inbreeding has deleterious effects. The great diversity of factors acting on the effects of inbreeding on trait values make difficult to provide a simple framework to understand them all, hence, we suggest fitness consequences of inbreeding has to be assessed considering the conditions under which one should expect inbreeding depression.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608187,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608187/thumbnails/1.jpg","file_name":"j.mambio.2011.04.00220230524-1-38ahje.pdf","download_url":"https://www.academia.edu/attachments/102608187/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"No_inbreeding_effects_on_body_size_in_tw.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608187/j.mambio.2011.04.00220230524-1-38ahje-libre.pdf?1684956979=\u0026response-content-disposition=attachment%3B+filename%3DNo_inbreeding_effects_on_body_size_in_tw.pdf\u0026Expires=1734038537\u0026Signature=BTl1vgm~P7I5K5IlRT6XQRxhkzcA5K0jl84iV~d3ZFPTTUPmzrcAnJcaBz7xq4DM5KZibCm0u2fCy7DVw1pf0c6QnuoPOPo-gtVyQ9AYpxYCpgZmDVSKTikh7B8bl7C6T1wfuS2IwFrXHJxlwa~AHLHQbL9cGOZI4ezUS7Cj5RN1xLFsJaJUeyXO51ZSCxrJ7p4TY4dJY5SjuRUY9xdaCaQDopA8x~9t3FGcB9O~JY8Px2-jxy7NGLuGfBmsy89cPe7XEcsWJKY038OzTxX8wU0boAwyvH2otZw~bFtcmT1a4N2fuVr3sixqBMX1w10SyF-4tnFkSj5NbtgPDT9P9Q__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":156,"name":"Genetics","url":"https://www.academia.edu/Documents/in/Genetics"},{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":14483,"name":"Animal Ecology","url":"https://www.academia.edu/Documents/in/Animal_Ecology"},{"id":141012,"name":"Captive Breeding","url":"https://www.academia.edu/Documents/in/Captive_Breeding"},{"id":151945,"name":"Reproductive Success","url":"https://www.academia.edu/Documents/in/Reproductive_Success"},{"id":164264,"name":"Body Size","url":"https://www.academia.edu/Documents/in/Body_Size"},{"id":413806,"name":"Inbreeding","url":"https://www.academia.edu/Documents/in/Inbreeding"},{"id":485998,"name":"Inbreeding Depression","url":"https://www.academia.edu/Documents/in/Inbreeding_Depression"},{"id":892890,"name":"Point of View","url":"https://www.academia.edu/Documents/in/Point_of_View"},{"id":1010596,"name":"Energy Cost","url":"https://www.academia.edu/Documents/in/Energy_Cost"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304117"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304117/Low_prevalence_of_haematozoa_in_Trumpeter_finches_Bucanetes_githagineus_from_south_eastern_Spain_additional_support_for_a_restricted_distribution_of_blood_parasites_in_arid_lands"><img alt="Research paper thumbnail of Low prevalence of haematozoa in Trumpeter finches Bucanetes githagineus from south-eastern Spain: additional support for a restricted distribution of blood parasites in arid lands" class="work-thumbnail" src="https://attachments.academia-assets.com/102608185/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304117/Low_prevalence_of_haematozoa_in_Trumpeter_finches_Bucanetes_githagineus_from_south_eastern_Spain_additional_support_for_a_restricted_distribution_of_blood_parasites_in_arid_lands">Low prevalence of haematozoa in Trumpeter finches Bucanetes githagineus from south-eastern Spain: additional support for a restricted distribution of blood parasites in arid lands</a></div><div class="wp-workCard_item"><span>Journal of Arid Environments</span><span>, 2003</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">We have investigated the prevalence of avian haematozoa in Trumpeter finches at two localities si...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">We have investigated the prevalence of avian haematozoa in Trumpeter finches at two localities situated in arid habitats. This study reports the first record of infection for this bird species. Two out of 58 individuals were infected by Leucocytozoon sp. We discuss several hypotheses accounting for low parasitemia in arid bird species.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2882f7e2b9b836369586977116c47529" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608185,"asset_id":102304117,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608185/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304117"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304117"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304117; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304117]").text(description); $(".js-view-count[data-work-id=102304117]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304117; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304117']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304117, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "2882f7e2b9b836369586977116c47529" } } $('.js-work-strip[data-work-id=102304117]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304117,"title":"Low prevalence of haematozoa in Trumpeter finches Bucanetes githagineus from south-eastern Spain: additional support for a restricted distribution of blood parasites in arid lands","translated_title":"","metadata":{"publisher":"Elsevier BV","grobid_abstract":"We have investigated the prevalence of avian haematozoa in Trumpeter finches at two localities situated in arid habitats. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304116"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304116/Physiological_and_haematological_consequences_of_a_novel_parasite_on_the_red_rumped_swallow_Hirundo_daurica"><img alt="Research paper thumbnail of Physiological and haematological consequences of a novel parasite on the red-rumped swallow Hirundo daurica" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304116/Physiological_and_haematological_consequences_of_a_novel_parasite_on_the_red_rumped_swallow_Hirundo_daurica">Physiological and haematological consequences of a novel parasite on the red-rumped swallow Hirundo daurica</a></div><div class="wp-workCard_item"><span>International Journal for Parasitology</span><span>, 2001</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Parasite virulence has been hypothesised to increase with the degree of host sociality because hi...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Parasite virulence has been hypothesised to increase with the degree of host sociality because highly social hosts have a greater probability of encountering horizontal transmission of parasites and experiencing infections with multiple strains of the same parasites than do solitary hosts. As compared with the defences of closely related social host species, we predicted that solitary hosts should have relatively weak defences against parasites, thus being relatively more affected when parasitised by a novel parasite. We tested this prediction by either experimentally infesting 12 nests of the solitarily nesting red-rumped swallow Hirundo daurica with 50 individuals of the generalist martin bug Oeciacus hirundinis or by fumigation of nine nests. Nestlings 13 days old from the parasite addition group experienced increased mortality, attained lower body mass and tended to have shorter tarsi compared to nestlings from fumigated nests. Surprisingly, nestlings from the parasite addition group had higher packed cell volume (cellular fraction of blood) and lower levels of heat shock proteins (HSP60) than nestlings from the fumigation group. A measure of immunocompetence was not significantly affected by treatment, but its magnitude was positively related to packed cell volume and negatively related to level of HSP60. Solitary hosts like the red-rumped swallow have weak immune responses and low levels of heat shock proteins when infested with ectoparasites while highly social hosts have strong immune responses and high levels of heat shock proteins when infested. These findings partially support the hypothesis that potential host species with weak defences are more susceptible to infection and the deleterious effects of evolving parasites than potential hosts with strong defences.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304116"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304116"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304116; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304116]").text(description); $(".js-view-count[data-work-id=102304116]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304116; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304116']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304116, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=102304116]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304116,"title":"Physiological and haematological consequences of a novel parasite on the red-rumped swallow Hirundo daurica","translated_title":"","metadata":{"abstract":"Parasite virulence has been hypothesised to increase with the degree of host sociality because highly social hosts have a greater probability of encountering horizontal transmission of parasites and experiencing infections with multiple strains of the same parasites than do solitary hosts. As compared with the defences of closely related social host species, we predicted that solitary hosts should have relatively weak defences against parasites, thus being relatively more affected when parasitised by a novel parasite. We tested this prediction by either experimentally infesting 12 nests of the solitarily nesting red-rumped swallow Hirundo daurica with 50 individuals of the generalist martin bug Oeciacus hirundinis or by fumigation of nine nests. Nestlings 13 days old from the parasite addition group experienced increased mortality, attained lower body mass and tended to have shorter tarsi compared to nestlings from fumigated nests. Surprisingly, nestlings from the parasite addition group had higher packed cell volume (cellular fraction of blood) and lower levels of heat shock proteins (HSP60) than nestlings from the fumigation group. A measure of immunocompetence was not significantly affected by treatment, but its magnitude was positively related to packed cell volume and negatively related to level of HSP60. Solitary hosts like the red-rumped swallow have weak immune responses and low levels of heat shock proteins when infested with ectoparasites while highly social hosts have strong immune responses and high levels of heat shock proteins when infested. These findings partially support the hypothesis that potential host species with weak defences are more susceptible to infection and the deleterious effects of evolving parasites than potential hosts with strong defences.","publisher":"Elsevier BV","publication_date":{"day":null,"month":null,"year":2001,"errors":{}},"publication_name":"International Journal for Parasitology"},"translated_abstract":"Parasite virulence has been hypothesised to increase with the degree of host sociality because highly social hosts have a greater probability of encountering horizontal transmission of parasites and experiencing infections with multiple strains of the same parasites than do solitary hosts. As compared with the defences of closely related social host species, we predicted that solitary hosts should have relatively weak defences against parasites, thus being relatively more affected when parasitised by a novel parasite. We tested this prediction by either experimentally infesting 12 nests of the solitarily nesting red-rumped swallow Hirundo daurica with 50 individuals of the generalist martin bug Oeciacus hirundinis or by fumigation of nine nests. Nestlings 13 days old from the parasite addition group experienced increased mortality, attained lower body mass and tended to have shorter tarsi compared to nestlings from fumigated nests. Surprisingly, nestlings from the parasite addition group had higher packed cell volume (cellular fraction of blood) and lower levels of heat shock proteins (HSP60) than nestlings from the fumigation group. A measure of immunocompetence was not significantly affected by treatment, but its magnitude was positively related to packed cell volume and negatively related to level of HSP60. Solitary hosts like the red-rumped swallow have weak immune responses and low levels of heat shock proteins when infested with ectoparasites while highly social hosts have strong immune responses and high levels of heat shock proteins when infested. These findings partially support the hypothesis that potential host species with weak defences are more susceptible to infection and the deleterious effects of evolving parasites than potential hosts with strong defences.","internal_url":"https://www.academia.edu/102304116/Physiological_and_haematological_consequences_of_a_novel_parasite_on_the_red_rumped_swallow_Hirundo_daurica","translated_internal_url":"","created_at":"2023-05-24T12:03:46.107-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[],"slug":"Physiological_and_haematological_consequences_of_a_novel_parasite_on_the_red_rumped_swallow_Hirundo_daurica","translated_slug":"","page_count":null,"language":"en","content_type":"Work","summary":"Parasite virulence has been hypothesised to increase with the degree of host sociality because highly social hosts have a greater probability of encountering horizontal transmission of parasites and experiencing infections with multiple strains of the same parasites than do solitary hosts. As compared with the defences of closely related social host species, we predicted that solitary hosts should have relatively weak defences against parasites, thus being relatively more affected when parasitised by a novel parasite. We tested this prediction by either experimentally infesting 12 nests of the solitarily nesting red-rumped swallow Hirundo daurica with 50 individuals of the generalist martin bug Oeciacus hirundinis or by fumigation of nine nests. Nestlings 13 days old from the parasite addition group experienced increased mortality, attained lower body mass and tended to have shorter tarsi compared to nestlings from fumigated nests. Surprisingly, nestlings from the parasite addition group had higher packed cell volume (cellular fraction of blood) and lower levels of heat shock proteins (HSP60) than nestlings from the fumigation group. A measure of immunocompetence was not significantly affected by treatment, but its magnitude was positively related to packed cell volume and negatively related to level of HSP60. Solitary hosts like the red-rumped swallow have weak immune responses and low levels of heat shock proteins when infested with ectoparasites while highly social hosts have strong immune responses and high levels of heat shock proteins when infested. These findings partially support the hypothesis that potential host species with weak defences are more susceptible to infection and the deleterious effects of evolving parasites than potential hosts with strong defences.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[],"research_interests":[{"id":159,"name":"Microbiology","url":"https://www.academia.edu/Documents/in/Microbiology"},{"id":164,"name":"Parasitology","url":"https://www.academia.edu/Documents/in/Parasitology"},{"id":2702,"name":"Immune response","url":"https://www.academia.edu/Documents/in/Immune_response"},{"id":2749,"name":"Animal Behavior","url":"https://www.academia.edu/Documents/in/Animal_Behavior"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":26327,"name":"Medicine","url":"https://www.academia.edu/Documents/in/Medicine"},{"id":29974,"name":"Disease susceptibility","url":"https://www.academia.edu/Documents/in/Disease_susceptibility"},{"id":38884,"name":"Applied Animal Behavior","url":"https://www.academia.edu/Documents/in/Applied_Animal_Behavior"},{"id":53663,"name":"HSP","url":"https://www.academia.edu/Documents/in/HSP"},{"id":59813,"name":"Coloniality","url":"https://www.academia.edu/Documents/in/Coloniality"},{"id":397456,"name":"Body Mass","url":"https://www.academia.edu/Documents/in/Body_Mass"},{"id":537505,"name":"For","url":"https://www.academia.edu/Documents/in/For"},{"id":765872,"name":"Heat Shock Protein","url":"https://www.academia.edu/Documents/in/Heat_Shock_Protein"},{"id":1281375,"name":"Hematocrit","url":"https://www.academia.edu/Documents/in/Hematocrit"},{"id":1837288,"name":"Immunocompetence","url":"https://www.academia.edu/Documents/in/Immunocompetence"},{"id":2504686,"name":"Packed cell volume","url":"https://www.academia.edu/Documents/in/Packed_cell_volume"},{"id":3834134,"name":"leukocyte Count","url":"https://www.academia.edu/Documents/in/leukocyte_Count"},{"id":3880895,"name":"Bird diseases","url":"https://www.academia.edu/Documents/in/Bird_diseases"},{"id":3889473,"name":"fumigation","url":"https://www.academia.edu/Documents/in/fumigation"}],"urls":[{"id":31718705,"url":"https://api.elsevier.com/content/article/PII:S0020751901002430?httpAccept=text/xml"}]}, dispatcherData: dispatcherData }); 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304114"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304114/Hindlimb_morphology_and_locomotor_performance_in_waders_an_evolutionary_approach"><img alt="Research paper thumbnail of Hindlimb morphology and locomotor performance in waders: an evolutionary approach" class="work-thumbnail" src="https://attachments.academia-assets.com/102608171/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304114/Hindlimb_morphology_and_locomotor_performance_in_waders_an_evolutionary_approach">Hindlimb morphology and locomotor performance in waders: an evolutionary approach</a></div><div class="wp-workCard_item"><span>Biological Journal of the Linnean Society</span><span>, 1999</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">Locomotion performance (measured as stride frequency and stride length) was studied in 16 species...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">Locomotion performance (measured as stride frequency and stride length) was studied in 16 species of waders. Differences in hindlimb morphoIo<gy (osteolocq and myolo<gy) were anaiysed among species. Evolutionary changes in both locomotion and morphological variables were analysed using comparative methods revealing the existence of some ecomorphological patterns relating these two sets of characters. Evolutionary changes in stride frequency were correlated with changes in the muscles M. iliotibialis cranialis, hf. iliotibiales lateralis and M. gastrocnemius, whereas changes in stride length showed correlated evolution with changes in the length of distal segments of the leg. M' e identify two different evolutionary strategies in locomotion of waders. One is a change in distal leg segments (skeletal system), an adaptive modification that increases stride length; the second is a change in the skeletal-muscular system, providing an increasc in muscular Performance (force or speed of contraction) in several muscles, and is an adaptation that increases stride frequency.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2e567165bed25bcd7e381205245ce6b9" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608171,"asset_id":102304114,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608171/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304114"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304114"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304114; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304114]").text(description); $(".js-view-count[data-work-id=102304114]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304114; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304114']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304114, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "2e567165bed25bcd7e381205245ce6b9" } } $('.js-work-strip[data-work-id=102304114]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304114,"title":"Hindlimb morphology and locomotor performance in waders: an evolutionary approach","translated_title":"","metadata":{"publisher":"Oxford University Press (OUP)","grobid_abstract":"Locomotion performance (measured as stride frequency and stride length) was studied in 16 species of waders. Differences in hindlimb morphoIo\u003cgy (osteolocq and myolo\u003cgy) were anaiysed among species. Evolutionary changes in both locomotion and morphological variables were analysed using comparative methods revealing the existence of some ecomorphological patterns relating these two sets of characters. Evolutionary changes in stride frequency were correlated with changes in the muscles M. iliotibialis cranialis, hf. iliotibiales lateralis and M. gastrocnemius, whereas changes in stride length showed correlated evolution with changes in the length of distal segments of the leg. M' e identify two different evolutionary strategies in locomotion of waders. One is a change in distal leg segments (skeletal system), an adaptive modification that increases stride length; the second is a change in the skeletal-muscular system, providing an increasc in muscular Performance (force or speed of contraction) in several muscles, and is an adaptation that increases stride frequency.","publication_date":{"day":null,"month":null,"year":1999,"errors":{}},"publication_name":"Biological Journal of the Linnean Society","grobid_abstract_attachment_id":102608171},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304114/Hindlimb_morphology_and_locomotor_performance_in_waders_an_evolutionary_approach","translated_internal_url":"","created_at":"2023-05-24T12:03:45.618-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608171,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608171/thumbnails/1.jpg","file_name":"j.1095-8312.1999.tb01936.x.pdf","download_url":"https://www.academia.edu/attachments/102608171/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Hindlimb_morphology_and_locomotor_perfor.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608171/j.1095-8312.1999.tb01936.x-libre.pdf?1684956987=\u0026response-content-disposition=attachment%3B+filename%3DHindlimb_morphology_and_locomotor_perfor.pdf\u0026Expires=1734038537\u0026Signature=ESWsJStkszKCuCxcc~Y98efjrPLrkHBpoKrkQ~VQXSdo3gWonMvXy3ntvnMgVC0WmxVhYcMz3hypKRpbMJ-tn0qBxdf1Z2xFrFysf3A9IZe0OxPOx~dNONhcfElGh-AMa7arlIJ12i~a7Mo0fZRYlcxbQw83FpqI44ORT7KIrUB14bSwmV2Ec089Hak7WGsXQg-m7cCprtCsM9-2k01uwLLE~EUbqd5yypcaziwbOzgHoB0uzn02z9c6N1gDqyuQlmYcwbPun2ZcaWwqtfhhAXNSNaAjh0QdyKii0p1~uyfj5W-ZmsKj3DfSox2ZBxwvs9Xeyp7~onV0xvo5MZ8EpA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Hindlimb_morphology_and_locomotor_performance_in_waders_an_evolutionary_approach","translated_slug":"","page_count":18,"language":"en","content_type":"Work","summary":"Locomotion performance (measured as stride frequency and stride length) was studied in 16 species of waders. Differences in hindlimb morphoIo\u003cgy (osteolocq and myolo\u003cgy) were anaiysed among species. Evolutionary changes in both locomotion and morphological variables were analysed using comparative methods revealing the existence of some ecomorphological patterns relating these two sets of characters. Evolutionary changes in stride frequency were correlated with changes in the muscles M. iliotibialis cranialis, hf. iliotibiales lateralis and M. gastrocnemius, whereas changes in stride length showed correlated evolution with changes in the length of distal segments of the leg. M' e identify two different evolutionary strategies in locomotion of waders. One is a change in distal leg segments (skeletal system), an adaptive modification that increases stride length; the second is a change in the skeletal-muscular system, providing an increasc in muscular Performance (force or speed of contraction) in several muscles, and is an adaptation that increases stride frequency.","owner":{"id":271084104,"first_name":"andres","middle_initials":null,"last_name":"barbosa","page_name":"andresbarbosa64","domain_name":"independent","created_at":"2023-05-24T12:03:07.798-07:00","display_name":"andres barbosa","url":"https://independent.academia.edu/andresbarbosa64"},"attachments":[{"id":102608171,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608171/thumbnails/1.jpg","file_name":"j.1095-8312.1999.tb01936.x.pdf","download_url":"https://www.academia.edu/attachments/102608171/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Hindlimb_morphology_and_locomotor_perfor.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608171/j.1095-8312.1999.tb01936.x-libre.pdf?1684956987=\u0026response-content-disposition=attachment%3B+filename%3DHindlimb_morphology_and_locomotor_perfor.pdf\u0026Expires=1734038537\u0026Signature=ESWsJStkszKCuCxcc~Y98efjrPLrkHBpoKrkQ~VQXSdo3gWonMvXy3ntvnMgVC0WmxVhYcMz3hypKRpbMJ-tn0qBxdf1Z2xFrFysf3A9IZe0OxPOx~dNONhcfElGh-AMa7arlIJ12i~a7Mo0fZRYlcxbQw83FpqI44ORT7KIrUB14bSwmV2Ec089Hak7WGsXQg-m7cCprtCsM9-2k01uwLLE~EUbqd5yypcaziwbOzgHoB0uzn02z9c6N1gDqyuQlmYcwbPun2ZcaWwqtfhhAXNSNaAjh0QdyKii0p1~uyfj5W-ZmsKj3DfSox2ZBxwvs9Xeyp7~onV0xvo5MZ8EpA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":9047,"name":"Osteology","url":"https://www.academia.edu/Documents/in/Osteology"},{"id":10866,"name":"Morphology","url":"https://www.academia.edu/Documents/in/Morphology"},{"id":10882,"name":"Evolution","url":"https://www.academia.edu/Documents/in/Evolution"},{"id":41843,"name":"Ecomorphology","url":"https://www.academia.edu/Documents/in/Ecomorphology"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":54589,"name":"Anatomy","url":"https://www.academia.edu/Documents/in/Anatomy"},{"id":289017,"name":"Comparative method","url":"https://www.academia.edu/Documents/in/Comparative_method"},{"id":467645,"name":"Myology","url":"https://www.academia.edu/Documents/in/Myology"},{"id":561614,"name":"Stride Length","url":"https://www.academia.edu/Documents/in/Stride_Length"},{"id":813148,"name":"Evolutionary Strategy","url":"https://www.academia.edu/Documents/in/Evolutionary_Strategy"},{"id":1372214,"name":"Performance Measure","url":"https://www.academia.edu/Documents/in/Performance_Measure"},{"id":1759562,"name":"Quadrupedalism","url":"https://www.academia.edu/Documents/in/Quadrupedalism"},{"id":3834354,"name":"STRIDE","url":"https://www.academia.edu/Documents/in/STRIDE"},{"id":4048400,"name":"correlated evolution","url":"https://www.academia.edu/Documents/in/correlated_evolution"}],"urls":[{"id":31718703,"url":"http://academic.oup.com/biolinnean/article-pdf/67/3/313/14073176/j.1095-8312.1999.tb01936.x.pdf"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="102304113"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/102304113/White_tail_markings_are_an_indicator_of_quality_and_affect_mate_preference_in_rock_sparrows"><img alt="Research paper thumbnail of White tail markings are an indicator of quality and affect mate preference in rock sparrows" class="work-thumbnail" src="https://attachments.academia-assets.com/102608184/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/102304113/White_tail_markings_are_an_indicator_of_quality_and_affect_mate_preference_in_rock_sparrows">White tail markings are an indicator of quality and affect mate preference in rock sparrows</a></div><div class="wp-workCard_item"><span>Behavioral Ecology and Sociobiology</span><span>, 2010</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">In birds, colourful and elaborate feathers are important traits in mate choice. Distinct tail whi...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">In birds, colourful and elaborate feathers are important traits in mate choice. Distinct tail white patches are present in many species of birds, but they remain little studied. Tail markings may indeed have a signal function because in many species males spread the tail offering a good view of these markings to females during courtship behaviour. Here, we investigated whether white tail spots in male rock sparrow, Petronia petronia, play a role in mate choice. In a free-living population of rock sparrows, we found a reduction in white tail spots size as the breeding season progressed due to abrasion, which was expected if tail spots act as a reliable quality indicator (i.e. a handicap). The same reduction was found under captive conditions, and males in worse condition (individuals that lost more weight) abraded a bigger part of white. This suggests that white tail markings are an indicator of male quality. In captivity, we measured female preference for males differing in white patch size in a mate choice experiment. The experimental reduction of the size of the males' white spots resulted in a lower sexual interest by females. During courtship display, male rock sparrow shows a yellow breast patch (a carotenoid-based, sexually selected ornament) together with the white spots in the tail. The sizes of these two traits are positively correlated, but only the abraded white area in the tail correlates with a surrogate of individual quality (lost of weight). In conclusion, we can assert that the size of the white spots is preferred by female rock sparrows and it is a part of a multiple signal system.</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="4da1fd64cb7da511368764902bc6bcca" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":102608184,"asset_id":102304113,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/102608184/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="102304113"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="102304113"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 102304113; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=102304113]").text(description); $(".js-view-count[data-work-id=102304113]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 102304113; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='102304113']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 102304113, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "4da1fd64cb7da511368764902bc6bcca" } } $('.js-work-strip[data-work-id=102304113]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":102304113,"title":"White tail markings are an indicator of quality and affect mate preference in rock sparrows","translated_title":"","metadata":{"publisher":"Springer Science and Business Media LLC","grobid_abstract":"In birds, colourful and elaborate feathers are important traits in mate choice. Distinct tail white patches are present in many species of birds, but they remain little studied. Tail markings may indeed have a signal function because in many species males spread the tail offering a good view of these markings to females during courtship behaviour. Here, we investigated whether white tail spots in male rock sparrow, Petronia petronia, play a role in mate choice. In a free-living population of rock sparrows, we found a reduction in white tail spots size as the breeding season progressed due to abrasion, which was expected if tail spots act as a reliable quality indicator (i.e. a handicap). The same reduction was found under captive conditions, and males in worse condition (individuals that lost more weight) abraded a bigger part of white. This suggests that white tail markings are an indicator of male quality. In captivity, we measured female preference for males differing in white patch size in a mate choice experiment. The experimental reduction of the size of the males' white spots resulted in a lower sexual interest by females. During courtship display, male rock sparrow shows a yellow breast patch (a carotenoid-based, sexually selected ornament) together with the white spots in the tail. The sizes of these two traits are positively correlated, but only the abraded white area in the tail correlates with a surrogate of individual quality (lost of weight). In conclusion, we can assert that the size of the white spots is preferred by female rock sparrows and it is a part of a multiple signal system.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Behavioral Ecology and Sociobiology","grobid_abstract_attachment_id":102608184},"translated_abstract":null,"internal_url":"https://www.academia.edu/102304113/White_tail_markings_are_an_indicator_of_quality_and_affect_mate_preference_in_rock_sparrows","translated_internal_url":"","created_at":"2023-05-24T12:03:45.350-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":271084104,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":102608184,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/102608184/thumbnails/1.jpg","file_name":"Griggio_20et_20al.2011.BES.pdf","download_url":"https://www.academia.edu/attachments/102608184/download_file?st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&st=MTczNDAzNDkzNyw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"White_tail_markings_are_an_indicator_of.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/102608184/Griggio_20et_20al.2011.BES-libre.pdf?1684956977=\u0026response-content-disposition=attachment%3B+filename%3DWhite_tail_markings_are_an_indicator_of.pdf\u0026Expires=1734038537\u0026Signature=TBlrkLpyAFrBvW1YfMNlv5YMIhVnRwpAnodH8L8hzrM5COCy9GU1oR-a4E4ZvVYAN-Pqa2F1CtTi~HbVsD89WpIs-nnIMmdQI~xJ7kIenUo43dsDZD2zQkKyW52UqrJsMS70UR6IFxevg1JETF-xxlFLNvoGsCSXsECA3IJ8fQS0D22gnxXr8xcTMZ-u-KVL-IfdBP8hvDPL7v181TzoHSfXAoqpR-sL5CXFgNWOO1hPl0fk3ZyHcGAznFbdAaYtGnc7UOjiitQhwtdE3wWYa37Q0q9dp1PlQs3HJBSf-aEP6sFb21XyfFThALhF7tQa1DQ7YlyPXP05-BCwq~MKCA__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"White_tail_markings_are_an_indicator_of_quality_and_affect_mate_preference_in_rock_sparrows","translated_slug":"","page_count":10,"language":"en","content_type":"Work","summary":"In birds, colourful and elaborate feathers are important traits in mate choice. Distinct tail white patches are present in many species of birds, but they remain little studied. Tail markings may indeed have a signal function because in many species males spread the tail offering a good view of these markings to females during courtship behaviour. Here, we investigated whether white tail spots in male rock sparrow, Petronia petronia, play a role in mate choice. In a free-living population of rock sparrows, we found a reduction in white tail spots size as the breeding season progressed due to abrasion, which was expected if tail spots act as a reliable quality indicator (i.e. a handicap). The same reduction was found under captive conditions, and males in worse condition (individuals that lost more weight) abraded a bigger part of white. This suggests that white tail markings are an indicator of male quality. In captivity, we measured female preference for males differing in white patch size in a mate choice experiment. The experimental reduction of the size of the males' white spots resulted in a lower sexual interest by females. During courtship display, male rock sparrow shows a yellow breast patch (a carotenoid-based, sexually selected ornament) together with the white spots in the tail. The sizes of these two traits are positively correlated, but only the abraded white area in the tail correlates with a surrogate of individual quality (lost of weight). 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Koenig, Bonn; Institut fiir Haustierkunde, Kiel. D. Bryant kindly provided us the data of for...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">... Koenig, Bonn; Institut fiir Haustierkunde, Kiel. D. Bryant kindly provided us the data of foraging behaviour of pratincoles. A. Keast, M. Mckitrick, BC Livezey, R J. Raikow and three anonimous referees made valuable comments on the first draft of the manuscript. 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