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<!DOCTYPE html> <html > <head> <meta charset="utf-8"> <meta rel="search" type="application/opensearchdescription+xml" href="/open_search.xml" title="Academia.edu"> <meta content="width=device-width, initial-scale=1" name="viewport"> <meta name="google-site-verification" content="bKJMBZA7E43xhDOopFZkssMMkBRjvYERV-NaN4R6mrs"> <meta name="csrf-param" content="authenticity_token" /> <meta name="csrf-token" content="rSIbxPZ0l/kPvklCLD81CkXDBLEzVxqrqW2FuQl6/XZMCHsl/R1jfczLogGzuB6i0bnp6lnkdd2MPa3+zz0wrA==" /> <meta name="citation_title" content="The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlid fishes" /> <meta name="citation_journal_title" content="Nature Communications" /> <meta name="citation_author" content="Joana Meier" /> <meta name="twitter:card" content="summary" /> <meta name="twitter:url" content="https://www.academia.edu/52030904/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlid_fishes" /> <meta name="twitter:title" content="The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlid fishes" /> <meta name="twitter:description" content="The process of adaptive radiation was classically hypothesized to require isolation of a lineage from its source (no gene flow) and from related species (no competition). Alternatively, hybridization between species may generate genetic variation" /> <meta name="twitter:image" content="https://0.academia-photos.com/98348964/26818563/25293449/s200_joana.meier.jpg" /> <meta property="fb:app_id" content="2369844204" /> <meta property="og:type" content="article" /> <meta property="og:url" content="https://www.academia.edu/52030904/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlid_fishes" /> <meta property="og:title" content="The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlid fishes" /> <meta property="og:image" content="http://a.academia-assets.com/images/open-graph-icons/fb-paper.gif" /> <meta property="og:description" content="The process of adaptive radiation was classically hypothesized to require isolation of a lineage from its source (no gene flow) and from related species (no competition). Alternatively, hybridization between species may generate genetic variation" /> <meta property="article:author" content="https://cambridge.academia.edu/JoanaMeier" /> <meta name="description" content="The process of adaptive radiation was classically hypothesized to require isolation of a lineage from its source (no gene flow) and from related species (no competition). Alternatively, hybridization between species may generate genetic variation" /> <title>(PDF) The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlid fishes | Joana Meier - Academia.edu</title> <link rel="canonical" href="https://www.academia.edu/52030904/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlid_fishes" /> <script async src="https://www.googletagmanager.com/gtag/js?id=G-5VKX33P2DS"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-5VKX33P2DS', { cookie_domain: 'academia.edu', send_page_view: false, }); gtag('event', 'page_view', { 'controller': "single_work", 'action': "show", 'controller_action': 'single_work#show', 'logged_in': 'false', 'edge': 'unknown', // Send nil if there is no A/B test bucket, in case some records get logged // with missing data - that way we can distinguish between the two cases. // ab_test_bucket should be of the form <ab_test_name>:<bucket> 'ab_test_bucket': null, }) </script> <script> var $controller_name = 'single_work'; var $action_name = "show"; var $rails_env = 'production'; var $app_rev = '92477ec68c09d28ae4730a4143c926f074776319'; var $domain = 'academia.edu'; var $app_host = "academia.edu"; var $asset_host = "academia-assets.com"; var $start_time = new Date().getTime(); var $recaptcha_key = "6LdxlRMTAAAAADnu_zyLhLg0YF9uACwz78shpjJB"; var $recaptcha_invisible_key = "6Lf3KHUUAAAAACggoMpmGJdQDtiyrjVlvGJ6BbAj"; var $disableClientRecordHit = false; </script> <script> window.require = { config: function() { return function() {} } } </script> <script> window.Aedu = window.Aedu || {}; window.Aedu.hit_data = null; window.Aedu.serverRenderTime = new Date(1732783764000); window.Aedu.timeDifference = new Date().getTime() - 1732783764000; </script> <script type="application/ld+json">{"@context":"https://schema.org","@type":"ScholarlyArticle","abstract":"The process of adaptive radiation was classically hypothesized to require isolation of a lineage from its source (no gene flow) and from related species (no competition). Alternatively, hybridization between species may generate genetic variation that facilitates adaptive radiation. Here we study haplochromine cichlid assemblages in two African Great Lakes to test these hypotheses. Greater biotic isolation (fewer lineages) predicts fewer constraints by competition and hence more ecological opportunity in Lake Bangweulu, whereas opportunity for hybridization predicts increased genetic potential in Lake Mweru. In Lake Bangweulu, we find no evidence for hybridization but also no adaptive radiation. We show that the Bangweulu lineages also colonized Lake Mweru, where they hybridized with Congolese lineages and then underwent multiple adaptive radiations that are strikingly complementary in ecology and morphology. Our data suggest that the presence of several related lineages does not ne...","author":[{"@context":"https://schema.org","@type":"Person","name":"Joana Meier"}],"contributor":[],"dateCreated":"2021-09-12","dateModified":"2021-09-12","datePublished":null,"headline":"The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlid fishes","inLanguage":"en","keywords":["Multidisciplinary","Nature Communications"],"locationCreated":null,"publication":"Nature Communications","publisher":{"@context":"https://schema.org","@type":"Organization","name":"Springer Science and Business Media LLC"},"image":null,"thumbnailUrl":null,"url":"https://www.academia.edu/52030904/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlid_fishes","sourceOrganization":[{"@context":"https://schema.org","@type":"EducationalOrganization","name":"cambridge"}]}</script><link rel="stylesheet" media="all" 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"https://www.academia.edu/login?post_login_redirect_url=https%3A%2F%2Fwww.academia.edu%2F52030904%2FThe_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlid_fishes%3Fauto%3Ddownload"; window.loswp.translateUrl = "https://www.academia.edu/login?post_login_redirect_url=https%3A%2F%2Fwww.academia.edu%2F52030904%2FThe_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlid_fishes%3Fshow_translation%3Dtrue"; window.loswp.previewableAttachments = [{"id":69483223,"identifier":"Attachment_69483223","shouldShowBulkDownload":false}]; window.loswp.shouldDetectTimezone = true; window.loswp.shouldShowBulkDownload = true; window.loswp.showSignupCaptcha = false window.loswp.willEdgeCache = false; window.loswp.work = {"work":{"id":52030904,"created_at":"2021-09-12T13:37:06.312-07:00","from_world_paper_id":172701750,"updated_at":"2021-09-12T13:59:09.450-07:00","_data":{"abstract":"The process of adaptive radiation was classically hypothesized to require isolation of a lineage from its source (no gene flow) and from related species (no competition). Alternatively, hybridization between species may generate genetic variation that facilitates adaptive radiation. Here we study haplochromine cichlid assemblages in two African Great Lakes to test these hypotheses. Greater biotic isolation (fewer lineages) predicts fewer constraints by competition and hence more ecological opportunity in Lake Bangweulu, whereas opportunity for hybridization predicts increased genetic potential in Lake Mweru. In Lake Bangweulu, we find no evidence for hybridization but also no adaptive radiation. We show that the Bangweulu lineages also colonized Lake Mweru, where they hybridized with Congolese lineages and then underwent multiple adaptive radiations that are strikingly complementary in ecology and morphology. Our data suggest that the presence of several related lineages does not ne...","publisher":"Springer Science and Business Media LLC","publication_name":"Nature Communications"},"document_type":"paper","pre_hit_view_count_baseline":null,"quality":"high","language":"en","title":"The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlid fishes","broadcastable":false,"draft":null,"has_indexable_attachment":true,"indexable":true}}["work"]; window.loswp.workCoauthors = [98348964]; window.loswp.locale = "en"; window.loswp.countryCode = "SG"; window.loswp.cwvAbTestBucket = ""; window.loswp.designVariant = "ds_vanilla"; window.loswp.fullPageMobileSutdModalVariant = "control"; window.loswp.useOptimizedScribd4genScript = false; window.loswp.appleClientId = 'edu.academia.applesignon';</script><script defer="" src="https://accounts.google.com/gsi/client"></script><div class="ds-loswp-container"><div class="ds-work-card--grid-container"><div class="ds-work-card--container js-loswp-work-card"><div class="ds-work-card--cover"><div class="ds-work-cover--wrapper"><div class="ds-work-cover--container"><button class="ds-work-cover--clickable js-swp-download-button" data-signup-modal="{"location":"swp-splash-paper-cover","attachmentId":69483223,"attachmentType":"pdf"}"><img alt="First page of “The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlid fishes”" class="ds-work-cover--cover-thumbnail" src="https://0.academia-photos.com/attachment_thumbnails/69483223/mini_magick20210912-9241-1hcvg12.png?1631479067" /><img alt="PDF Icon" class="ds-work-cover--file-icon" src="//a.academia-assets.com/assets/single_work_splash/adobe.icon-574afd46eb6b03a77a153a647fb47e30546f9215c0ee6a25df597a779717f9ef.svg" /><div class="ds-work-cover--hover-container"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span><p>Download Free PDF</p></div><div class="ds-work-cover--ribbon-container">Download Free PDF</div><div class="ds-work-cover--ribbon-triangle"></div></button></div></div></div><div class="ds-work-card--work-information"><h1 class="ds-work-card--work-title">The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlid fishes</h1><div class="ds-work-card--work-authors ds-work-card--detail"><a class="ds-work-card--author js-wsj-grid-card-author ds2-5-body-md ds2-5-body-link" data-author-id="98348964" href="https://cambridge.academia.edu/JoanaMeier"><img alt="Profile image of Joana Meier" class="ds-work-card--author-avatar" src="https://0.academia-photos.com/98348964/26818563/25293449/s65_joana.meier.jpg" />Joana Meier</a></div><div class="ds-work-card--detail"><p class="ds-work-card--detail ds2-5-body-sm">Nature Communications</p></div><p class="ds-work-card--work-abstract ds-work-card--detail ds2-5-body-md">The process of adaptive radiation was classically hypothesized to require isolation of a lineage from its source (no gene flow) and from related species (no competition). Alternatively, hybridization between species may generate genetic variation that facilitates adaptive radiation. Here we study haplochromine cichlid assemblages in two African Great Lakes to test these hypotheses. Greater biotic isolation (fewer lineages) predicts fewer constraints by competition and hence more ecological opportunity in Lake Bangweulu, whereas opportunity for hybridization predicts increased genetic potential in Lake Mweru. In Lake Bangweulu, we find no evidence for hybridization but also no adaptive radiation. We show that the Bangweulu lineages also colonized Lake Mweru, where they hybridized with Congolese lineages and then underwent multiple adaptive radiations that are strikingly complementary in ecology and morphology. Our data suggest that the presence of several related lineages does not ne...</p><div class="ds-work-card--button-container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--work-card","attachmentId":69483223,"attachmentType":"pdf","workUrl":"https://www.academia.edu/52030904/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlid_fishes"}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--work-card","attachmentId":69483223,"attachmentType":"pdf","workUrl":"https://www.academia.edu/52030904/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlid_fishes"}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div></div><div data-auto_select="false" data-client_id="331998490334-rsn3chp12mbkiqhl6e7lu2q0mlbu0f1b" data-doc_id="69483223" data-landing_url="https://www.academia.edu/52030904/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlid_fishes" data-login_uri="https://www.academia.edu/registrations/google_one_tap" data-moment_callback="onGoogleOneTapEvent" id="g_id_onload"></div><div class="ds-top-related-works--grid-container"><div class="ds-related-content--container ds-top-related-works--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="0" data-entity-id="114154321" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/114154321/Ancestral_Hybridization_Facilitated_Species_Diversification_in_the_Lake_Malawi_Cichlid_Fish_Adaptive_Radiation">Ancestral Hybridization Facilitated Species Diversification in the Lake Malawi Cichlid Fish Adaptive Radiation</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="232196573" href="https://independent.academia.edu/BNgatunga">Benjamin Ngatunga</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Molecular Biology and Evolution, 2019</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Ancestral Hybridization Facilitated Species Diversification in the Lake Malawi Cichlid Fish Adaptive Radiation","attachmentId":110926740,"attachmentType":"pdf","work_url":"https://www.academia.edu/114154321/Ancestral_Hybridization_Facilitated_Species_Diversification_in_the_Lake_Malawi_Cichlid_Fish_Adaptive_Radiation","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/114154321/Ancestral_Hybridization_Facilitated_Species_Diversification_in_the_Lake_Malawi_Cichlid_Fish_Adaptive_Radiation"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="1" data-entity-id="114154311" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/114154311/Ancestral_hybridisation_facilitated_species_diversification_in_the_Lake_Malawi_cichlid_fish_adaptive_radiation">Ancestral hybridisation facilitated species diversification in the Lake Malawi cichlid fish adaptive radiation</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="232196573" href="https://independent.academia.edu/BNgatunga">Benjamin Ngatunga</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2019</p><p class="ds-related-work--abstract ds2-5-body-sm">The adaptive radiation of cichlid fishes in East Afrian Lake Malawi encompasses over 500 species that are believed to have evolved within the last 800 thousand years from a common founder population. It has been proposed that hybridisation between ancestral lineages can provide the genetic raw material to fuel such exceptionally high diversification rates, and evidence for this has recently been presented for the Lake Victoria Region cichlid superflock. Here we report that Lake Malawi cichlid genomes also show evidence of hybridisation between two lineages that split 3-4 million years ago, today represented by Lake Victoria cichlids and the riverine Astatotilapia sp. ‘ruaha blue’. The two ancestries in Malawi cichlid genomes are present in large blocks of several kilobases, but there is little variation in this pattern between Malawi cichlid species, suggesting that the large-scale mosaic structure of the genomes was largely established prior to the radiation. Nevertheless, tens of ...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Ancestral hybridisation facilitated species diversification in the Lake Malawi cichlid fish adaptive radiation","attachmentId":110926774,"attachmentType":"pdf","work_url":"https://www.academia.edu/114154311/Ancestral_hybridisation_facilitated_species_diversification_in_the_Lake_Malawi_cichlid_fish_adaptive_radiation","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/114154311/Ancestral_hybridisation_facilitated_species_diversification_in_the_Lake_Malawi_cichlid_fish_adaptive_radiation"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="2" data-entity-id="94229795" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/94229795/Lake_Level_Fluctuations_Synchronize_Genetic_Divergences_of_Cichlid_Fishes_in_African_Lakes">Lake Level Fluctuations Synchronize Genetic Divergences of Cichlid Fishes in African Lakes</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="251828391" href="https://independent.academia.edu/ErikVerheyen2">Erik Verheyen</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Molecular Biology and Evolution, 2001</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Lake Level Fluctuations Synchronize Genetic Divergences of Cichlid Fishes in African Lakes","attachmentId":96744828,"attachmentType":"pdf","work_url":"https://www.academia.edu/94229795/Lake_Level_Fluctuations_Synchronize_Genetic_Divergences_of_Cichlid_Fishes_in_African_Lakes","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/94229795/Lake_Level_Fluctuations_Synchronize_Genetic_Divergences_of_Cichlid_Fishes_in_African_Lakes"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="3" data-entity-id="37238624" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/37238624/The_onset_of_ecological_diversification_50_years_after_colonization_of_a_crater_lake_by_haplochromine_cichlid_fishes">The onset of ecological diversification 50 years after colonization of a crater lake by haplochromine cichlid fishes</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="75822323" href="https://independent.academia.edu/MoserFlorian">Florian Moser</a><span>, </span><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="534684" href="https://wageningen-ur.academia.edu/JaccovanRijssel">Jacco van Rijssel</a></div><p class="ds-related-work--abstract ds2-5-body-sm">Adaptive radiation research typically relies on the study of evolution in retrospective, leaving the predictive value of the concept hard to evaluate. Several radiations, including the cichlid fishes in the East African Great Lakes, have been studied extensively, yet no study has investigated the onset of the intraspecific processes of niche expansion and differentiation shortly after colonization of an adaptive zone by cichlids. Haplochromine cichlids of one of the two lineages that seeded the Lake Victoria radiation recently arrived in Lake Chala, a lake perfectly suited for within-lake cichlid speciation. Here, we infer the colonization and demographic history, quantify phenotypic, ecological and genomic diversity and diversification, and investigate the selection regime to ask if the population shows signs of diversification resembling the onset of adaptive radiation. We find that since their arrival in the lake, haplochromines have colonized a wide range of depth habitats associated with ecological and morphological expansion and the beginning of phenotypic differentiation and potentially nascent speciation, consistent with the very early onset of an adaptive radiation process. Moreover, we demonstrate evidence of rugged phenotypic fitness surfaces, indicating that current ecological selection may contribute to the phenotypic diversification.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"The onset of ecological diversification 50 years after colonization of a crater lake by haplochromine cichlid fishes","attachmentId":57190872,"attachmentType":"pdf","work_url":"https://www.academia.edu/37238624/The_onset_of_ecological_diversification_50_years_after_colonization_of_a_crater_lake_by_haplochromine_cichlid_fishes","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/37238624/The_onset_of_ecological_diversification_50_years_after_colonization_of_a_crater_lake_by_haplochromine_cichlid_fishes"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="4" data-entity-id="18886786" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/18886786/Divergent_selection_during_speciation_of_Lake_Malawi_cichlid_fishes_inferred_from_parallel_radiations_in_nuptial_coloration">Divergent selection during speciation of Lake Malawi cichlid fishes inferred from parallel radiations in nuptial coloration</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="7541539" href="https://independent.academia.edu/oleseehausen">ole seehausen</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Proceedings of the National Academy of Sciences, 2003</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Divergent selection during speciation of Lake Malawi cichlid fishes inferred from parallel radiations in nuptial coloration","attachmentId":42123701,"attachmentType":"pdf","work_url":"https://www.academia.edu/18886786/Divergent_selection_during_speciation_of_Lake_Malawi_cichlid_fishes_inferred_from_parallel_radiations_in_nuptial_coloration","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/18886786/Divergent_selection_during_speciation_of_Lake_Malawi_cichlid_fishes_inferred_from_parallel_radiations_in_nuptial_coloration"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="5" data-entity-id="77321737" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/77321737/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlids">The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlids</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="43627073" href="https://unza-zm.academia.edu/cKatongo">cyprian Katongo</a></div><p class="ds-related-work--metadata ds2-5-body-xs">2019</p><p class="ds-related-work--abstract ds2-5-body-sm">This dataset contains all the underlying data and scripts used for the publication by Meier et al., 2019, in Nature Communications on &quot;&lt;strong&gt;T&lt;/strong&gt;&lt;strong&gt;he coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlids&quot;&lt;/strong&gt;. This package contains the R scripts and all input files to produce Figures 2-4, Supplementary Figures 3, 6-8, and Supplementary Data 1. It contains the morphology data, the D statistics used for plotting, the genomic data files used for generating PCA plots, the fineRADstructure output files, the BEAST trees with all calibration sets, the RAD variant calls, the mitochondrial D-loop alignment, and the mitochondrial and RAD RAxML trees. For more information, see Meier et al., 2019, Nature Communications.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"The coincidence of ecological opportunity with hybridization explains rapid adaptive radiation in Lake Mweru cichlids","attachmentId":84729817,"attachmentType":"pdf","work_url":"https://www.academia.edu/77321737/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlids","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/77321737/The_coincidence_of_ecological_opportunity_with_hybridization_explains_rapid_adaptive_radiation_in_Lake_Mweru_cichlids"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="6" data-entity-id="13854392" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/13854392/The_genomic_substrate_for_adaptive_radiation_in_African_cichlid_fish">The genomic substrate for adaptive radiation in African cichlid fish</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="32961435" href="https://independent.academia.edu/LuisSanchezpulido">Luis Sanchez-pulido</a><span>, </span><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="32946793" href="https://utexas.academia.edu/HansHofmann">Hans Hofmann</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Nature, 2014</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"The genomic substrate for adaptive radiation in African cichlid fish","attachmentId":44875864,"attachmentType":"pdf","work_url":"https://www.academia.edu/13854392/The_genomic_substrate_for_adaptive_radiation_in_African_cichlid_fish","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/13854392/The_genomic_substrate_for_adaptive_radiation_in_African_cichlid_fish"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="7" data-entity-id="69611816" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/69611816/Ancient_hybridization_fuels_rapid_cichlid_fish_adaptive_radiations">Ancient hybridization fuels rapid cichlid fish adaptive radiations</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="7541539" href="https://independent.academia.edu/oleseehausen">ole seehausen</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Nature communications, 2017</p><p class="ds-related-work--abstract ds2-5-body-sm">Understanding why some evolutionary lineages generate exceptionally high species diversity is an important goal in evolutionary biology. Haplochromine cichlid fishes of Africa&#39;s Lake Victoria region encompass &gt;700 diverse species that all evolved in the last 150,000 years. How this &#39;Lake Victoria Region Superflock&#39; could evolve on such rapid timescales is an enduring question. Here, we demonstrate that hybridization between two divergent lineages facilitated this process by providing genetic variation that subsequently became recombined and sorted into many new species. Notably, the hybridization event generated exceptional allelic variation at an opsin gene known to be involved in adaptation and speciation. More generally, differentiation between new species is accentuated around variants that were fixed differences between the parental lineages, and that now appear in many new combinations in the radiation species. We conclude that hybridization between divergent li...</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Ancient hybridization fuels rapid cichlid fish adaptive radiations","attachmentId":79640159,"attachmentType":"pdf","work_url":"https://www.academia.edu/69611816/Ancient_hybridization_fuels_rapid_cichlid_fish_adaptive_radiations","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/69611816/Ancient_hybridization_fuels_rapid_cichlid_fish_adaptive_radiations"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="8" data-entity-id="21569058" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/21569058/Complex_histories_of_repeated_gene_flow_in_Cameroon_crater_lake_cichlids_cast_doubt_on_one_of_the_clearest_examples_of_sympatric_speciation">Complex histories of repeated gene flow in Cameroon crater lake cichlids cast doubt on one of the clearest examples of sympatric speciation</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="747465" href="https://alabama.academia.edu/JohnPFriel">John P Friel</a></div><p class="ds-related-work--abstract ds2-5-body-sm">One of the most celebrated examples of sympatric speciation in nature are monophyletic radiations of cichlid fishes endemic to Cameroon crater lakes. However, phylogenetic inference of monophyly may not detect complex colonization histories involving some allopatric isolation, such as double invasions obscured by genome-wide gene flow. Population genomic approaches are better suited to test hypotheses of sympatric speciation in these cases. Here, we use comprehensive sampling from all four sympatric crater lake cichlid radiations in Cameroon and outgroups across Africa combined with next-generation sequencing to genotype tens of thousands of SNPs. We find considerable evidence of gene flow between all four radiations and neighboring riverine populations after initial colonization. In a few cases, some sympatric species are more closely related to outgroups than others, consistent with secondary gene flow facilitating their speciation. Our results do not rule out sympatric speciation in Cameroon cichlids, but rather reveal a complex history of speciation with gene flow, including allopatric and sympatric phases, resulting in both reproductively isolated species and incipient species complexes. The best remaining non-cichlid examples of sympatric speciation all involve assortative mating within microhabitats. We speculate that this feature may be necessary to complete the process of sympatric speciation in nature. K E Y W O R D</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"Complex histories of repeated gene flow in Cameroon crater lake cichlids cast doubt on one of the clearest examples of sympatric speciation","attachmentId":42091330,"attachmentType":"pdf","work_url":"https://www.academia.edu/21569058/Complex_histories_of_repeated_gene_flow_in_Cameroon_crater_lake_cichlids_cast_doubt_on_one_of_the_clearest_examples_of_sympatric_speciation","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/21569058/Complex_histories_of_repeated_gene_flow_in_Cameroon_crater_lake_cichlids_cast_doubt_on_one_of_the_clearest_examples_of_sympatric_speciation"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div><div class="ds-related-work--container js-wsj-grid-card" data-collection-position="9" data-entity-id="18886759" data-sort-order="default"><a class="ds-related-work--title js-wsj-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/18886759/An_extant_cichlid_fish_radiation_emerged_in_an_extinct_Pleistocene_lake">An extant cichlid fish radiation emerged in an extinct Pleistocene lake</a><div class="ds-related-work--metadata"><a class="js-wsj-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="7541539" href="https://independent.academia.edu/oleseehausen">ole seehausen</a></div><p class="ds-related-work--metadata ds2-5-body-xs">Nature, 2005</p><p class="ds-related-work--abstract ds2-5-body-sm">The haplochromine cichlid fish of the East African Great Lakes represent some of the fastest and most species-rich adaptive radiations known, but rivers in most of Africa accommodate only a few morphologically similar species of haplochromine cichlid fish. This has been explained by the wealth of ecological opportunity in large lakes compared with rivers. It is therefore surprising that the rivers of southern Africa harbour many, ecologically diverse haplochromines. Here we present genetic, morphological and biogeographical evidence suggesting that these riverine cichlids are products of a recent adaptive radiation in a large lake that dried up in the Holocene. Haplochromine species richness peaks steeply in an area for which geological data reveal the historical existence of Lake palaeo-Makgadikgadi. The centre of this extinct lake is now a saltpan north of the Kalahari Desert, but it once hosted a rapidly evolving fish species radiation, comparable in morphological diversity to that in the extant African Great Lakes. Importantly, this lake seeded all major river systems of southern Africa with ecologically diverse cichlids. This discovery reveals how local evolutionary processes operating during a short window of ecological opportunity can have a major and lasting effect on biodiversity on a continental scale.</p><div class="ds-related-work--ctas"><button class="ds2-5-text-link ds2-5-text-link--inline js-swp-download-button" data-signup-modal="{"location":"wsj-grid-card-download-pdf-modal","work_title":"An extant cichlid fish radiation emerged in an extinct Pleistocene lake","attachmentId":42129611,"attachmentType":"pdf","work_url":"https://www.academia.edu/18886759/An_extant_cichlid_fish_radiation_emerged_in_an_extinct_Pleistocene_lake","alternativeTracking":true}"><span class="material-symbols-outlined" style="font-size: 18px" translate="no">download</span><span class="ds2-5-text-link__content">Download free PDF</span></button><a class="ds2-5-text-link ds2-5-text-link--inline js-wsj-grid-card-view-pdf" href="https://www.academia.edu/18886759/An_extant_cichlid_fish_radiation_emerged_in_an_extinct_Pleistocene_lake"><span class="ds2-5-text-link__content">View PDF</span><span class="material-symbols-outlined" style="font-size: 18px" translate="no">chevron_right</span></a></div></div></div></div><div class="ds-sticky-ctas--wrapper js-loswp-sticky-ctas hidden"><div class="ds-sticky-ctas--grid-container"><div class="ds-sticky-ctas--container"><button class="ds2-5-button js-swp-download-button" data-signup-modal="{"location":"continue-reading-button--sticky-ctas","attachmentId":69483223,"attachmentType":"pdf","workUrl":null}">See full PDF</button><button class="ds2-5-button ds2-5-button--secondary js-swp-download-button" data-signup-modal="{"location":"download-pdf-button--sticky-ctas","attachmentId":69483223,"attachmentType":"pdf","workUrl":null}"><span class="material-symbols-outlined" style="font-size: 20px" translate="no">download</span>Download PDF</button></div></div></div><div class="ds-below-fold--grid-container"><div class="ds-work--container js-loswp-embedded-document"><div class="attachment_preview" data-attachment="Attachment_69483223" style="display: none"><div class="js-scribd-document-container"><div class="scribd--document-loading js-scribd-document-loader" style="display: block;"><img alt="Loading..." src="//a.academia-assets.com/images/loaders/paper-load.gif" /><p>Loading Preview</p></div></div><div style="text-align: center;"><div class="scribd--no-preview-alert js-preview-unavailable"><p>Sorry, preview is currently unavailable. You can download the paper by clicking the button above.</p></div></div></div></div><div class="ds-sidebar--container js-work-sidebar"><div class="ds-related-content--container"><h2 class="ds-related-content--heading">Related papers</h2><div class="ds-related-work--container js-related-work-sidebar-card" data-collection-position="0" data-entity-id="47046507" data-sort-order="default"><a class="ds-related-work--title js-related-work-grid-card-title ds2-5-body-md ds2-5-body-link" href="https://www.academia.edu/47046507/Hybridization_and_contemporary_evolution_in_an_introduced_cichlid_fish_from_Lake_Malawi_National_Park">Hybridization and contemporary evolution in an introduced cichlid fish from Lake Malawi National Park</a><div class="ds-related-work--metadata"><a class="js-related-work-grid-card-author ds2-5-body-sm ds2-5-body-link" data-author-id="54097325" href="https://independent.academia.edu/RosannaRobinson">Rosanna Robinson</a></div><p class="ds-related-work--metadata 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