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class="vector-toc-numb">2</span> <span>Riproduzione e sviluppo embrionale</span> </div> </a> <ul id="toc-Riproduzione_e_sviluppo_embrionale-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Bibliografia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Bibliografia"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Bibliografia</span> </div> </a> <ul id="toc-Bibliografia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altri_progetti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Altri_progetti"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Altri progetti</span> </div> </a> <ul id="toc-Altri_progetti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Collegamenti_esterni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Collegamenti_esterni"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Collegamenti esterni</span> </div> </a> <ul id="toc-Collegamenti_esterni-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Indice" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Indice" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Mostra/Nascondi l'indice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Mostra/Nascondi l'indice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Gastrotricha</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vai a una voce in un'altra lingua. Disponibile in 53 lingue" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-53" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">53 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B4%D8%B9%D8%B1%D9%8A%D8%A7%D8%AA_%D8%A7%D9%84%D8%A8%D8%B7%D9%86" title="شعريات البطن - arabo" lang="ar" hreflang="ar" data-title="شعريات البطن" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%B4%D8%B9%D8%B1%D9%8A%D8%A7%D8%AA_%D8%A7%D9%84%D8%A8%D8%B7%D9%86" title="شعريات البطن - arabo egiziano" lang="arz" hreflang="arz" data-title="شعريات البطن" data-language-autonym="مصرى" data-language-local-name="arabo egiziano" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Qarn%C4%B1kirpiklil%C9%99r" title="Qarnıkirpiklilər - azerbaigiano" lang="az" hreflang="az" data-title="Qarnıkirpiklilər" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%91%D1%80%D1%83%D1%85%D0%B0%D1%80%D0%B0%D1%81%D0%BD%D1%96%D1%87%D0%BD%D1%8B%D1%8F_%D1%87%D1%8D%D1%80%D0%B2%D1%96" title="Брухараснічныя чэрві - bielorusso" lang="be" hreflang="be" data-title="Брухараснічныя чэрві" data-language-autonym="Беларуская" data-language-local-name="bielorusso" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9A%D0%BE%D1%80%D0%B5%D0%BC%D0%BE%D1%80%D0%B5%D1%81%D0%BD%D0%B8%D1%87%D0%B5%D1%81%D1%82%D0%B8" title="Кореморесничести - bulgaro" lang="bg" hreflang="bg" data-title="Кореморесничести" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - bosniaco" lang="bs" hreflang="bs" data-title="Gastrotricha" data-language-autonym="Bosanski" data-language-local-name="bosniaco" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Gastr%C3%B2trics" title="Gastròtrics - catalano" lang="ca" hreflang="ca" data-title="Gastròtrics" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - cebuano" lang="ceb" hreflang="ceb" data-title="Gastrotricha" data-language-autonym="Cebuano" data-language-local-name="cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/B%C5%99ichobrvky" title="Břichobrvky - ceco" lang="cs" hreflang="cs" data-title="Břichobrvky" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Bauchh%C3%A4rlinge" title="Bauchhärlinge - tedesco" lang="de" hreflang="de" data-title="Bauchhärlinge" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en badge-Q17437798 badge-goodarticle mw-list-item" title="voce di qualità"><a href="https://en.wikipedia.org/wiki/Gastrotrich" title="Gastrotrich - inglese" lang="en" hreflang="en" data-title="Gastrotrich" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - esperanto" lang="eo" hreflang="eo" data-title="Gastrotricha" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - spagnolo" lang="es" hreflang="es" data-title="Gastrotricha" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Ripsk%C3%B5htsed" title="Ripskõhtsed - estone" lang="et" hreflang="et" data-title="Ripskõhtsed" data-language-autonym="Eesti" data-language-local-name="estone" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - basco" lang="eu" hreflang="eu" data-title="Gastrotricha" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D9%88%DB%8C%E2%80%8C%D8%B4%DA%A9%D9%85%E2%80%8C%D8%AA%D8%A8%D8%A7%D8%B1%D8%A7%D9%86" title="موی‌شکم‌تباران - persiano" lang="fa" hreflang="fa" data-title="موی‌شکم‌تباران" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Sukaspintaiset" title="Sukaspintaiset - finlandese" lang="fi" hreflang="fi" data-title="Sukaspintaiset" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - francese" lang="fr" hreflang="fr" data-title="Gastrotricha" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Buteldiarten" title="Buteldiarten - frisone settentrionale" lang="frr" hreflang="frr" data-title="Buteldiarten" data-language-autonym="Nordfriisk" data-language-local-name="frisone settentrionale" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Gastr%C3%B3tricos" title="Gastrótricos - galiziano" lang="gl" hreflang="gl" data-title="Gastrótricos" data-language-autonym="Galego" data-language-local-name="galiziano" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%92%D7%A1%D7%98%D7%A8%D7%95%D7%98%D7%A8%D7%99%D7%9B%D7%94" title="גסטרוטריכה - ebraico" lang="he" hreflang="he" data-title="גסטרוטריכה" data-language-autonym="עברית" data-language-local-name="ebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Trbodlaci" title="Trbodlaci - croato" lang="hr" hreflang="hr" data-title="Trbodlaci" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Csill%C3%B3shas%C3%BAak" title="Csillóshasúak - ungherese" lang="hu" hreflang="hu" data-title="Csillóshasúak" data-language-autonym="Magyar" data-language-local-name="ungherese" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - indonesiano" lang="id" hreflang="id" data-title="Gastrotricha" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E8%85%B9%E6%AF%9B%E5%8B%95%E7%89%A9" title="腹毛動物 - giapponese" lang="ja" hreflang="ja" data-title="腹毛動物" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%92%E1%83%90%E1%83%A1%E1%83%A2%E1%83%A0%E1%83%9D%E1%83%A2%E1%83%A0%E1%83%98%E1%83%A5%E1%83%94%E1%83%91%E1%83%98" title="გასტროტრიქები - georgiano" lang="ka" hreflang="ka" data-title="გასტროტრიქები" data-language-autonym="ქართული" data-language-local-name="georgiano" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D2%9A%D2%B1%D1%80%D1%81%D0%B0%D2%9B%D0%BA%D1%96%D1%80%D0%BF%D1%96%D0%BA%D1%88%D0%B5%D0%BB%D1%96_%D2%9B%D2%B1%D1%80%D1%82%D1%82%D0%B0%D1%80" title="Құрсақкірпікшелі құрттар - kazako" lang="kk" hreflang="kk" data-title="Құрсақкірпікшелі құрттар" data-language-autonym="Қазақша" data-language-local-name="kazako" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B3%B5%EB%AA%A8%EB%8F%99%EB%AC%BC" title="복모동물 - coreano" lang="ko" hreflang="ko" data-title="복모동물" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Boekh%C3%A4%C3%B6rige" title="Boekhäörige - limburghese" lang="li" hreflang="li" data-title="Boekhäörige" data-language-autonym="Limburgs" data-language-local-name="limburghese" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/V%C4%93derskropstai%C5%86i" title="Vēderskropstaiņi - lettone" lang="lv" hreflang="lv" data-title="Vēderskropstaiņi" data-language-autonym="Latviešu" data-language-local-name="lettone" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9C%D0%B5%D1%88%D0%B5%D1%81%D1%82%D0%BE%D1%82%D1%80%D0%B5%D0%BF%D1%87%D0%B5%D1%81%D1%82%D0%B8_%D1%86%D1%80%D0%B2%D0%B8" title="Мешестотрепчести црви - macedone" lang="mk" hreflang="mk" data-title="Мешестотрепчести црви" data-language-autonym="Македонски" data-language-local-name="macedone" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - malese" lang="ms" hreflang="ms" data-title="Gastrotricha" data-language-autonym="Bahasa Melayu" data-language-local-name="malese" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Buikharigen" title="Buikharigen - olandese" lang="nl" hreflang="nl" data-title="Buikharigen" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Bukh%C3%A5rsdyr" title="Bukhårsdyr - norvegese bokmål" lang="nb" hreflang="nb" data-title="Bukhårsdyr" data-language-autonym="Norsk bokmål" data-language-local-name="norvegese bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nv mw-list-item"><a href="https://nv.wikipedia.org/wiki/Ch%CA%BCosh_doo_yit%CA%BC%C3%ADinii_bigh%C4%85%CC%81%C4%85%CC%81%CA%BC_di%CA%BCil%C3%ADg%C3%AD%C3%AD" title="Chʼosh doo yitʼíinii bighą́ą́ʼ diʼilígíí - navajo" lang="nv" hreflang="nv" data-title="Chʼosh doo yitʼíinii bighą́ą́ʼ diʼilígíí" data-language-autonym="Diné bizaad" data-language-local-name="navajo" class="interlanguage-link-target"><span>Diné bizaad</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - occitano" lang="oc" hreflang="oc" data-title="Gastrotricha" data-language-autonym="Occitan" data-language-local-name="occitano" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Brzuchorz%C4%99ski" title="Brzuchorzęski - polacco" lang="pl" hreflang="pl" data-title="Brzuchorzęski" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - portoghese" lang="pt" hreflang="pt" data-title="Gastrotricha" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Gastrotrihe" title="Gastrotrihe - rumeno" lang="ro" hreflang="ro" data-title="Gastrotrihe" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%91%D1%80%D1%8E%D1%85%D0%BE%D1%80%D0%B5%D1%81%D0%BD%D0%B8%D1%87%D0%BD%D1%8B%D0%B5_%D1%87%D0%B5%D1%80%D0%B2%D0%B8" title="Брюхоресничные черви - russo" lang="ru" hreflang="ru" data-title="Брюхоресничные черви" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Gastrotrich" title="Gastrotrich - scozzese" lang="sco" hreflang="sco" data-title="Gastrotrich" data-language-autonym="Scots" data-language-local-name="scozzese" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Gastrotrich" title="Gastrotrich - Simple English" lang="en-simple" hreflang="en-simple" data-title="Gastrotrich" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Bru%C5%A1nobrvky" title="Brušnobrvky - slovacco" lang="sk" hreflang="sk" data-title="Brušnobrvky" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Trebuhodla%C4%8Dniki" title="Trebuhodlačniki - sloveno" lang="sl" hreflang="sl" data-title="Trebuhodlačniki" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - serbo" lang="sr" hreflang="sr" data-title="Gastrotricha" data-language-autonym="Српски / srpski" data-language-local-name="serbo" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Bukh%C3%A5rsdjur" title="Bukhårsdjur - svedese" lang="sv" hreflang="sv" data-title="Bukhårsdjur" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%81%E0%B8%81%E0%B8%AA%E0%B9%82%E0%B8%97%E0%B8%A3%E0%B8%97%E0%B8%A3%E0%B8%B4%E0%B9%80%E0%B8%84%E0%B8%AD" title="แกสโทรทริเคอ - thailandese" lang="th" hreflang="th" data-title="แกสโทรทริเคอ" data-language-autonym="ไทย" data-language-local-name="thailandese" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - turco" lang="tr" hreflang="tr" data-title="Gastrotricha" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A7%D0%B5%D1%80%D0%B5%D0%B2%D0%BE%D0%B2%D1%96%D0%B9%D1%87%D0%B0%D1%81%D1%82%D1%96" title="Черевовійчасті - ucraino" lang="uk" hreflang="uk" data-title="Черевовійчасті" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - vietnamita" lang="vi" hreflang="vi" data-title="Gastrotricha" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Gastrotricha" title="Gastrotricha - waray" lang="war" hreflang="war" data-title="Gastrotricha" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E8%85%B9%E6%AF%9B%E5%8A%A8%E7%89%A9%E9%97%A8" title="腹毛动物门 - wu" lang="wuu" hreflang="wuu" data-title="腹毛动物门" data-language-autonym="吴语" data-language-local-name="wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E8%85%B9%E6%AF%9B%E5%8A%A8%E7%89%A9%E9%97%A8" title="腹毛动物门 - cinese" lang="zh" hreflang="zh" data-title="腹毛动物门" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q190115#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica collegamenti</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespace"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Gastrotricha" title="Vedi la voce [c]" accesskey="c"><span>Voce</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Discussione:Gastrotricha&action=edit&redlink=1" rel="discussion" class="new" title="Vedi le discussioni relative a questa pagina (la pagina non esiste) [t]" accesskey="t"><span>Discussione</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Cambia versione linguistica" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">italiano</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Visite"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Gastrotricha"><span>Leggi</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Gastrotricha&veaction=edit" title="Modifica questa pagina [v]" accesskey="v"><span>Modifica</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Gastrotricha&action=edit" title="Modifica il wikitesto di questa pagina [e]" accesskey="e"><span>Modifica wikitesto</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Gastrotricha&action=history" title="Versioni precedenti di questa pagina [h]" accesskey="h"><span>Cronologia</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Strumenti pagine"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Strumenti" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Strumenti</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Strumenti</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">nascondi</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Altre opzioni" > <div class="vector-menu-heading"> Azioni </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Gastrotricha"><span>Leggi</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Gastrotricha&veaction=edit" title="Modifica questa pagina [v]" accesskey="v"><span>Modifica</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Gastrotricha&action=edit" title="Modifica il wikitesto di questa pagina [e]" accesskey="e"><span>Modifica wikitesto</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Gastrotricha&action=history"><span>Cronologia</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Generale </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Speciale:PuntanoQui/Gastrotricha" title="Elenco di tutte le pagine che sono collegate a questa [j]" accesskey="j"><span>Puntano qui</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Speciale:ModificheCorrelate/Gastrotricha" rel="nofollow" title="Elenco delle ultime modifiche alle pagine collegate a questa [k]" accesskey="k"><span>Modifiche correlate</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Gastrotricha&oldid=137894210" title="Collegamento permanente a questa versione di questa pagina"><span>Link permanente</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Gastrotricha&action=info" title="Ulteriori informazioni su questa pagina"><span>Informazioni pagina</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Speciale:Cita&page=Gastrotricha&id=137894210&wpFormIdentifier=titleform" title="Informazioni su come citare questa pagina"><span>Cita questa voce</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Speciale:UrlShortener&url=https%3A%2F%2Fit.wikipedia.org%2Fwiki%2FGastrotricha"><span>Ottieni URL breve</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Speciale:QrCode&url=https%3A%2F%2Fit.wikipedia.org%2Fwiki%2FGastrotricha"><span>Scarica codice QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Stampa/esporta </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Speciale:Libro&bookcmd=book_creator&referer=Gastrotricha"><span>Crea un libro</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Speciale:DownloadAsPdf&page=Gastrotricha&action=show-download-screen"><span>Scarica come PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Gastrotricha&printable=yes" title="Versione stampabile di questa pagina [p]" accesskey="p"><span>Versione stampabile</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In altri progetti </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Gastrotricha" hreflang="en"><span>Wikimedia Commons</span></a></li><li class="wb-otherproject-link wb-otherproject-species mw-list-item"><a href="https://species.wikimedia.org/wiki/Gastrotricha" hreflang="en"><span>Wikispecies</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q190115" title="Collegamento all'elemento connesso dell'archivio dati [g]" accesskey="g"><span>Elemento Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Strumenti pagine"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aspetto"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aspetto</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">nascondi</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Da Wikipedia, l'enciclopedia libera.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="it" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r143074810">.mw-parser-output .sinottico{background-color:#f8f9fa;border:1px solid #c8ccd1;border-spacing:0;clear:right;float:right;font-size:95%;line-height:1.4em;margin:0 0 1em 1.5em;width:280px}.mw-parser-output .sinottico caption{font-weight:bold}.mw-parser-output .sinottico>tbody>tr>th:not(:only-child),.mw-parser-output .sinottico_annidata>tbody>tr>th:not(:only-child){background-color:#f3f3f3;border-right:1px solid #e5e5e8;text-align:left;vertical-align:top}.mw-parser-output .sinottico>tbody>tr:not(:last-child)>td,.mw-parser-output .sinottico>tbody>tr:not(:last-child)>th,.mw-parser-output .sinottico_annidata>tbody>tr>td,.mw-parser-output .sinottico_annidata>tbody>tr>th{border-bottom:1px solid #e0e0e0}.mw-parser-output .sinottico>tbody>tr>td,.mw-parser-output .sinottico>tbody>tr>th:not(:only-child),.mw-parser-output .sinottico_annidata>tbody>tr>td,.mw-parser-output .sinottico_annidata>tbody>tr>th:not(:only-child){padding:.25em .4em}.mw-parser-output .sinottico>tbody>tr>td,.mw-parser-output .sinottico_annidata>tbody>tr>td{vertical-align:middle}.mw-parser-output .sinottico>tbody>tr>td>hr:only-child{margin:0.4em 0.2em}.mw-parser-output .sinottico ul{margin:0 0 0 1em;padding:0}.mw-parser-output .sinottico_annidata{border-spacing:0;margin:0 -.4em;width:calc(100% + calc(.4em*2))}.mw-parser-output .sinottico_annidata:last-child{margin-bottom:-.2em}.mw-parser-output .sinottico_annidata:last-child>tbody>tr:last-child>td,.mw-parser-output .sinottico_annidata:last-child>tbody>tr:last-child>th{border-bottom:none}.mw-parser-output .sinottico_divisione+.sinottico_divisione>th,.mw-parser-output .sinottico_testata+.sinottico_divisione>th{border-top:2px solid #f8f9fa}.mw-parser-output .sinottico_divisione th{background-color:#eeeeee;padding:.15em .4em;text-align:center}.mw-parser-output .sinottico_piede{text-align:center;font-size:90%;background:#EFEFEF}.mw-parser-output .sinottico_piede2{background-color:white;font-size:xx-small;padding-bottom:0;text-align:right}.mw-parser-output .sinottico_sottotitolo{font-size:80%}.mw-parser-output .sinottico_testata th{background-color:#dedede;font-size:116%;padding:.2em .4em;text-align:center}.mw-parser-output .sinottico_testo_centrale{text-align:center}</style><table class="infobox sinottico" summary="Tabella sinottica che riassume i principali dati del soggetto" style="width:230px"><tbody><tr class="sinottico_testata"><th colspan="2" style="background-color: pink; color: black;"><div class="noprint" style="position:relative; float:right; font-size:70%;"><figure class="mw-default-size noresize" typeof="mw:File"><span title="Come leggere il tassobox"><img alt="Come leggere il tassobox" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Information-silk.svg/16px-Information-silk.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Information-silk.svg/24px-Information-silk.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/51/Information-silk.svg/32px-Information-silk.svg.png 2x" data-file-width="16" data-file-height="16" usemap="#ImageMap_37fb70b5d7ceee19" /></span><map name="ImageMap_37fb70b5d7ceee19"><area href="/wiki/Progetto:Forme_di_vita/Come_leggere_il_tassobox" shape="rect" coords="0,0,50,50" alt="Progetto:Forme di vita/Come leggere il tassobox" title="Progetto:Forme di vita/Come leggere il tassobox" /></map><figcaption>Come leggere il tassobox</figcaption></figure></div>Gastrotricha</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><figure class="mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/File:Gastrotrich.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Gastrotrich.jpg/220px-Gastrotrich.jpg" decoding="async" width="220" height="229" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Gastrotrich.jpg/330px-Gastrotrich.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Gastrotrich.jpg/440px-Gastrotrich.jpg 2x" data-file-width="964" data-file-height="1003" /></a><figcaption></figcaption></figure></td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color: pink; color: black;"><a href="/wiki/Classificazione_scientifica" title="Classificazione scientifica">Classificazione scientifica</a></th></tr><tr><th style="font-weight:normal"><a href="/wiki/Dominio_(biologia)" title="Dominio (biologia)">Dominio</a></th><td><a href="/wiki/Eukaryota" title="Eukaryota">Eukaryota</a> </td></tr><tr><th style="font-weight:normal; width:50%"><a href="/wiki/Regno_(biologia)" title="Regno (biologia)">Regno</a></th><td><a href="/wiki/Animalia" title="Animalia">Animalia</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Sottoregno" class="mw-redirect" title="Sottoregno">Sottoregno</a></th><td><a href="/wiki/Eumetazoa" title="Eumetazoa">Eumetazoa</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Simmetria_animale" title="Simmetria animale">Ramo</a></th><td><a href="/wiki/Bilateria" title="Bilateria">Bilateria</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Superphylum" title="Superphylum">Superphylum</a></th><td><a href="/wiki/Protostomia" title="Protostomia">Protostomia</a> </td></tr><tr> <th style="font-weight:normal"><small>(<a href="/wiki/Clade" class="mw-redirect" title="Clade">clade</a>)</small></th><td><a href="/wiki/Platyzoa" title="Platyzoa">Platyzoa</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Phylum" title="Phylum">Phylum</a></th><td><b>Gastrotricha</b> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color: pink; color: black;">Ordini</th></tr><tr><td class="sinottico_testo_centrale" colspan="2" style="text-align:left"><div> <ul><li><a href="/w/index.php?title=Macrodasyda&action=edit&redlink=1" class="new" title="Macrodasyda (la pagina non esiste)">Macrodasyda</a></li> <li><a href="/w/index.php?title=Chaetonotida&action=edit&redlink=1" class="new" title="Chaetonotida (la pagina non esiste)">Chaetonotida</a></li></ul> </div> </td></tr></tbody></table> <p>Il <b><a href="/wiki/Phylum" title="Phylum">phylum</a></b> <i><b>Gastrotricha</b></i> (dal <a href="/wiki/Greco_antico" class="mw-redirect" title="Greco antico">greco antico</a>: <i>gaster</i> = stomaco; <i>thrix</i> = pelo) è costituito da circa 460 <a href="/wiki/Specie" title="Specie">specie</a> di <a href="/wiki/Animali" class="mw-redirect" title="Animali">animali</a>, lunghi al massimo <span class="nowrap"><span data-sort-value="6997400000000000000♠"></span>4 mm</span>, che vivono su piante o tra i granelli di sabbia negli ambienti acquatici, sia marini che d'acqua dolce. Alcune specie sono state ritrovate anche in terreni particolarmente umidi. I <b>gastrotrichi</b> si cibano di <a href="/wiki/Materia_organica" class="mw-redirect" title="Materia organica">materia organica</a> morta ma anche di <a href="/wiki/Batteri" class="mw-redirect" title="Batteri">batteri</a>, <a href="/wiki/Funghi" class="mw-redirect" title="Funghi">funghi</a> e <a href="/wiki/Protisti" class="mw-redirect" title="Protisti">protisti</a> e, a loro volta, sono alimento per un vasto numero di <a href="/wiki/Invertebrati" class="mw-redirect" title="Invertebrati">invertebrati</a>, come <a href="/wiki/Anellidi" class="mw-redirect" title="Anellidi">anellidi</a>, <a href="/wiki/Nematodi" class="mw-redirect" title="Nematodi">nematodi</a> ed <a href="/wiki/Artropodi" class="mw-redirect" title="Artropodi">artropodi</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Anatomia_e_fisiologia">Anatomia e fisiologia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gastrotricha&veaction=edit&section=1" title="Modifica la sezione Anatomia e fisiologia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Gastrotricha&action=edit&section=1" title="Edit section's source code: Anatomia e fisiologia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>I gastrotrichi sono considerati <a href="/wiki/Pseudocelomati" class="mw-redirect" title="Pseudocelomati">pseudocelomati</a> anche se, molto spesso, il loro <a href="/wiki/Pseudoceloma" title="Pseudoceloma">pseudoceloma</a> è notevolmente ridotto o assente. La loro <a href="/wiki/Morfologia_(biologia)" title="Morfologia (biologia)">morfologia</a> somiglia vagamente a quella dei <a href="/wiki/Rotiferi" class="mw-redirect" title="Rotiferi">rotiferi</a> ma si distinguono da essi per l'assenza della <i>corona ciliata</i> e per la presenza di <a href="/wiki/Scaglia" title="Scaglia">scaglie</a> e <a href="/w/index.php?title=Spina_(zoologia)&action=edit&redlink=1" class="new" title="Spina (zoologia) (la pagina non esiste)">spine</a> diffuse sul corpo. </p><p>Il corpo è ricoperto da una <a href="/wiki/Cuticola" class="mw-disambig" title="Cuticola">cuticola</a> secreta dallo <a href="/wiki/Epidermide" title="Epidermide">strato epidermico</a> sottostante. Nella zona ventrale le <a href="/wiki/Cellula" title="Cellula">cellule</a> epidermiche sono munite di <a href="/wiki/Ciglia_(biologia)" title="Ciglia (biologia)">ciglia</a> che mostrano una funzione locomotoria simile a quella dei <a href="/wiki/Platyhelminthes" title="Platyhelminthes">platelminti</a>. Nella zona posteriore è presente una coda biforcuta al cui interno apposite ghiandole secernono sostanze adesive per permettere l'ancoraggio a qualsiasi tipo di substrato. <i>Tubi adesivi</i> sono comunque sparsi su tutto il corpo. </p><p>Come la maggior parte dei <a href="/wiki/Bilateri" class="mw-redirect" title="Bilateri">bilateri</a>, i gastrotrichi sono <a href="/wiki/Proctodeati" title="Proctodeati">proctodeati</a>. Il <a href="/wiki/Tubo_digerente" class="mw-redirect" title="Tubo digerente">canale alimentare</a> è rettilineo e la bocca è circondata da ciglia utilizzate per la ricerca delle particelle alimentari. Una <a href="/wiki/Faringe" title="Faringe">faringe</a> muscolosa agisce come pompa per aspirare il cibo e immetterlo nell'<a href="/wiki/Intestino" title="Intestino">intestino</a>. </p><p>Il <a href="/wiki/Sistema_nervoso" title="Sistema nervoso">sistema nervoso</a> è costituito da due <a href="/wiki/Gangli" class="mw-redirect" title="Gangli">gangli</a>, posizionati in prossimità della faringe, dai quali si dipartono due cordoni nervosi laterali che innervano l'intero organismo. </p><p>Gli scambi gassosi, necessari per la <a href="/wiki/Respirazione_(fisiologia_comparata)" title="Respirazione (fisiologia comparata)">respirazione</a>, avvengono per diffusione attraverso la parete del corpo. La <a href="/wiki/Circolazione_sanguigna" class="mw-redirect" title="Circolazione sanguigna">circolazione</a> delle sostanze nutritive e dei gas respiratori è affidata allo <i>pseudoceloma</i>. L'escrezione dei <a href="/wiki/Catabolismo" title="Catabolismo">cataboliti</a>, le sostanze di rifiuto prodotte dal <a href="/wiki/Metabolismo" title="Metabolismo">metabolismo</a> cellulare, è possibile grazie ad un <a href="/wiki/Apparato_protonefridiale" title="Apparato protonefridiale">apparato protonefridiale</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Riproduzione_e_sviluppo_embrionale">Riproduzione e sviluppo embrionale</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gastrotricha&veaction=edit&section=2" title="Modifica la sezione Riproduzione e sviluppo embrionale" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Gastrotricha&action=edit&section=2" title="Edit section's source code: Riproduzione e sviluppo embrionale"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La maggior parte delle specie è <a href="/wiki/Ermafrodita" class="mw-redirect" title="Ermafrodita">ermafrodita</a> insufficiente. L'<a href="/wiki/Apparato_riproduttore_maschile" class="mw-redirect" title="Apparato riproduttore maschile">apparato riproduttore maschile</a> è formato da 1 o 2 <a href="/wiki/Testicolo" title="Testicolo">testicoli</a> collegati, mediante uno <i>spermidotto</i> al poro genitale situato nella regione posteriore-ventrale. Alcune specie sono dotate di un organo peniforme. L'<a href="/wiki/Apparato_riproduttore_femminile" class="mw-redirect" title="Apparato riproduttore femminile">apparato riproduttore femminile</a> è formato da 1 o 2 <a href="/wiki/Ovaia" title="Ovaia">ovari</a> collegati ad un <a href="/wiki/Utero" title="Utero">utero</a>, che poi continua con un <i>ovidotto</i> a formare la <a href="/wiki/Vagina" title="Vagina">vagina</a>. Il poro genitale femminile sbocca nella stessa cavità anale. </p><p>In alcune specie esistono sia ermafroditi che maschi e femmine distinte, mentre altre sono composte esclusivamente da femmine che si riproducono per <a href="/wiki/Partenogenesi" title="Partenogenesi">partenogenesi</a>. </p><p>Dall'<a href="/wiki/Uovo_(biologia)" title="Uovo (biologia)">uovo</a> si sviluppa un sub-individuo che in poco tempo raggiunge la maturità sessuale. </p> <div class="mw-heading mw-heading2"><h2 id="Bibliografia">Bibliografia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gastrotricha&veaction=edit&section=3" title="Modifica la sezione Bibliografia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Gastrotricha&action=edit&section=3" title="Edit section's source code: Bibliografia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Dorit R., Walker W., Barnes R. <i>Zoologia</i>, Zanichelli, 2001</li></ul> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gastrotricha&veaction=edit&section=4" title="Modifica la sezione Altri progetti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Gastrotricha&action=edit&section=4" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><span class="plainlinks" title="commons:Category:Gastrotricha"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Gastrotricha?uselang=it">Wikimedia Commons</a></span></li> <li class="" title=""><span class="plainlinks" title="wikispecies:Gastrotricha"><a class="external text" href="https://species.wikimedia.org/wiki/Gastrotricha?uselang=it">Wikispecies</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file su <b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Gastrotricha?uselang=it">Gastrotricha</a></span></b></li> <li><span typeof="mw:File"><a href="https://species.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikispecies"><img alt="Collabora a Wikispecies" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/WikiSpecies_notext.svg/18px-WikiSpecies_notext.svg.png" decoding="async" width="18" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/WikiSpecies_notext.svg/27px-WikiSpecies_notext.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2e/WikiSpecies_notext.svg/36px-WikiSpecies_notext.svg.png 2x" data-file-width="106" data-file-height="129" /></a></span> <span class="plainlinks"><a class="external text" href="https://species.wikimedia.org/wiki/?uselang=it">Wikispecies</a></span> contiene informazioni su <b><span class="plainlinks"><a class="external text" href="https://species.wikimedia.org/wiki/Gastrotricha?uselang=it">Gastrotricha</a></span></b></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gastrotricha&veaction=edit&section=5" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Gastrotricha&action=edit&section=5" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li class="mw-empty-elt"></li> <li><cite id="CITEREFBritannica.com" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://www.britannica.com/animal/gastrotrich"><span style="font-style:italic;">gastrotrich</span></a>, su <span style="font-style:italic;"><a href="/wiki/Enciclopedia_Britannica" title="Enciclopedia Britannica">Enciclopedia Britannica</a></span>, Encyclopædia Britannica, Inc.</cite> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q190115#P1417" title="Modifica su Wikidata"><img alt="Modifica su Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/10px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></li> <li><cite id="CITEREFFossilworks.org" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=67121"><span style="font-style:italic;">Gastrotricha</span></a>, su <span style="font-style:italic;">Fossilworks.org</span>.</cite> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q190115#P842" title="Modifica su Wikidata"><img alt="Modifica su Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/10px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></li></ul> <style data-mw-deduplicate="TemplateStyles:r140554510">.mw-parser-output .CdA{border:1px solid #aaa;width:100%;margin:auto;font-size:90%;padding:2px}.mw-parser-output .CdA th{background-color:#f2f2f2;font-weight:bold;width:20%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .CdA th{background-color:#202122}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .CdA th{background-color:#202122}}</style><table class="CdA"><tbody><tr><th><a href="/wiki/Aiuto:Controllo_di_autorit%C3%A0" title="Aiuto:Controllo di autorità">Controllo di autorità</a></th><td><a href="/wiki/Library_of_Congress_Control_Number" title="Library of Congress Control Number">LCCN</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="http://id.loc.gov/authorities/subjects/sh85053501">sh85053501</a></span><span style="font-weight:bold;"> ·</span> <a href="/wiki/Biblioteca_nazionale_di_Israele" title="Biblioteca nazionale di Israele">J9U</a> <span class="uid">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr>, <abbr title="ebraico">HE</abbr></span>) <a rel="nofollow" class="external text" href="https://www.nli.org.il/en/authorities/987007560577905171">987007560577905171</a></span></td></tr></tbody></table> <div class="noprint" style="width:100%; padding: 3px 0; display: flex; flex-wrap: wrap; row-gap: 4px; column-gap: 8px; box-sizing: border-box;"><div style="flex-grow: 1"><style data-mw-deduplicate="TemplateStyles:r140555418">.mw-parser-output .itwiki-template-occhiello{width:100%;line-height:25px;border:1px solid #CCF;background-color:#F0EEFF;box-sizing:border-box}.mw-parser-output .itwiki-template-occhiello-progetto{background-color:#FAFAFA}@media screen{html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello{background-color:#202122;border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .itwiki-template-occhiello-progetto{background-color:#282929}}</style><div class="itwiki-template-occhiello"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:DNA.png" class="mw-file-description" title="Biologia"><img alt=" " src="//upload.wikimedia.org/wikipedia/commons/thumb/4/47/DNA.png/24px-DNA.png" decoding="async" width="24" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/47/DNA.png/36px-DNA.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/47/DNA.png/47px-DNA.png 2x" data-file-width="298" data-file-height="314" /></a></span> <b><a href="/wiki/Portale:Biologia" title="Portale:Biologia">Portale Biologia</a></b>: accedi alle voci di Wikipedia che trattano di biologia</div></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Estratto da "<a dir="ltr" href="https://it.wikipedia.org/w/index.php?title=Gastrotricha&oldid=137894210">https://it.wikipedia.org/w/index.php?title=Gastrotricha&oldid=137894210</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Categoria:Categorie" title="Categoria:Categorie">Categoria</a>: <ul><li><a href="/wiki/Categoria:Eumetazoi" title="Categoria:Eumetazoi">Eumetazoi</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categorie nascoste: <ul><li><a href="/wiki/Categoria:Voci_con_Tassobox_-_Phylum_Gastrotricha" title="Categoria:Voci con Tassobox - Phylum Gastrotricha">Voci con Tassobox - Phylum Gastrotricha</a></li><li><a href="/wiki/Categoria:P1417_letta_da_Wikidata" title="Categoria:P1417 letta da Wikidata">P1417 letta da Wikidata</a></li><li><a href="/wiki/Categoria:P842_letta_da_Wikidata" title="Categoria:P842 letta da Wikidata">P842 letta da Wikidata</a></li><li><a href="/wiki/Categoria:Voci_con_codice_LCCN" title="Categoria:Voci con codice LCCN">Voci con codice LCCN</a></li><li><a href="/wiki/Categoria:Voci_con_codice_J9U" title="Categoria:Voci con codice J9U">Voci con codice J9U</a></li><li><a href="/wiki/Categoria:Voci_non_biografiche_con_codici_di_controllo_di_autorit%C3%A0" title="Categoria:Voci non biografiche con codici di controllo di autorità">Voci non biografiche con codici di controllo di autorità</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Questa pagina è stata modificata per l'ultima volta il 16 feb 2024 alle 10:47.</li> <li id="footer-info-copyright">Il testo è disponibile secondo la <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.it">licenza Creative Commons Attribuzione-Condividi allo stesso modo</a>; 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