{"id":6373,"date":"2014-05-26T08:00:03","date_gmt":"2014-05-26T06:00:03","guid":{"rendered":"http:\/\/codexvirtualis.fr\/codex\/?p=6373"},"modified":"2014-04-29T21:48:53","modified_gmt":"2014-04-29T19:48:53","slug":"semaine-22-2014","status":"publish","type":"post","link":"https:\/\/codexvirtualis.fr\/codex\/semaine-22-2014","title":{"rendered":"Semaine 22-2014"},"content":{"rendered":"<h2>Une citation<\/h2>\n<p>\u00ab\u00a0Un ami c\u2019est une route, un ennemi c\u2019est un mur.\u00a0\u00bb<\/p>\n<p>Proverbe chinois<\/p>\n<p> &nbsp; <\/p>\n<h2>Une image<\/h2>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/IMGP5819_antedon_bifida_2009-WEB.JPG\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/IMGP5819_antedon_bifida_2009-WEB.JPG\" width=\"300\" alt=\"Comatule\" class \/><\/a><figcaption class=\"wp-caption-text\">Comatule (Crozon, 2009)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>La Comatule (<em>Antedon bifida<\/em>) est un animal appartenant au groupe des \u00c9chinodermes, et plus particuli\u00e8rement aux Crino\u00efdes. Elle repr\u00e9sente la famille des Antedonid\u00e9s.<\/p>\n<p>Pr\u00e9sente depuis la frange inf\u00e9rieure de la zone intertidale, alternativement couverte et d\u00e9couverte par la mar\u00e9e, elle est rencontr\u00e9e jusqu&rsquo;\u00e0 des profondeurs de 200 m\u00e8tres.<br \/>\nElle est plus fr\u00e9quente entre 10 et 50 m\u00e8tres de profondeur, et peut former des groupes assez denses.<\/p>\n<p>Le jour, elle est peu active et fix\u00e9e \u00e0 l&rsquo;abri de la lumi\u00e8re sur un support comme un rocher, un promontoire ou un animal, souvent \u00e0 proximit\u00e9 d&rsquo;autres individus.<br \/>\nElle est cependant susceptible de s&rsquo;en d\u00e9tacher et de se d\u00e9placer en rampant ou en nageant.<\/p>\n<p> &nbsp; <\/p>\n<p>La Comatule est ais\u00e9ment identifi\u00e9e \u00e0 son organisation corporelle originale.<br \/>\nElle est form\u00e9e d&rsquo;un disque central d\u00e9sign\u00e9 par le terme calice, conique, portant la bouche et l&rsquo;anus sur sa face sup\u00e9rieure.<br \/>\nUne dizaine de bras y sont ins\u00e9r\u00e9s, d&rsquo;une longueur moyenne de 50 mm, form\u00e9s d&rsquo;unit\u00e9s appel\u00e9es articles. Ils sont ramifi\u00e9s, des pinnules en partent \u00e0 raison d&rsquo;une soixantaine par bras.<br \/>\nBras et pinnules arborent une couleur variant du rose au rouge voire du jaune au brun. Il est fr\u00e9quent que des taches de couleurs distinctes alternent et leur conf\u00e8rent un aspect bariol\u00e9.<\/p>\n<p>\u00c0 l&rsquo;oppos\u00e9 de la face orale portant les bras, la face aborale est le lieu d&rsquo;insertion d&rsquo;une quinzaine d&rsquo;expansions courtes, \u00e9paisses et articul\u00e9es, qualifi\u00e9es de cirres. Elles permettent \u00e0 l&rsquo;animal de s&rsquo;agripper au substrat. <\/p>\n<p> &nbsp; <\/p>\n<p>L&rsquo;esp\u00e8ce se nourrit de fines particules pr\u00e9sentes en suspension dans l&rsquo;eau.<br \/>\nSe tenant perpendiculairement au courant, elle r\u00e9alise la filtration de l&rsquo;eau gr\u00e2ce \u00e0 ses bras, qui retiennent les particules et les am\u00e8nent \u00e0 la bouche.<br \/>\nIls pr\u00e9sentent une goutti\u00e8re cili\u00e9e du c\u00f4t\u00e9 oral, permettant l&rsquo;acheminement de ces derni\u00e8res vers la bouche.<\/p>\n<p>En cons\u00e9quence, la Comatule est un animal qualifi\u00e9 de filtreur ou suspensivore.<\/p>\n<p> &nbsp; <\/p>\n<p>Pour en savoir plus, consulter :<\/p>\n<p><span style=\"color: #999999;\">&bull; <\/span>le site <a href=\"http:\/\/doris.ffessm.fr\" target=\"_blank\">Doris<\/a> (Donn\u00e9es d\u2019observations pour la reconnaissance et l\u2019identification de la faune et de la flore subaquatiques \u2013 F\u00e9d\u00e9ration fran\u00e7aise d\u2019\u00e9tudes et de sports sous-marins \u2013 adresse : http:\/\/doris.ffessm.fr)<\/p>\n<p>et notamment<\/p>\n<p><span style=\"color: #999999;\">&bull; <\/span>la fiche <a href=\"http:\/\/doris.ffessm.fr\/fiche2.asp?fiche_numero=107\" target=\"_blank\">ANDR\u00c9 Fr\u00e9d\u00e9ric, LAMARE V\u00e9ronique, MARAN Vincent, P\u00c9AN Michel,  in : DORIS, 25\/2\/2014 : Antedon bifida (Pennant, 1777)<\/a> (adresse : http:\/\/doris.ffessm.fr\/fiche2.asp?fiche_numero=107)<\/p>\n<p> &nbsp; <\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>Une citation \u00ab\u00a0Un ami c\u2019est une route, un ennemi c\u2019est un mur.\u00a0\u00bb Proverbe chinois &nbsp; Une image &nbsp; La Comatule (Antedon bifida) est un animal appartenant au groupe des \u00c9chinodermes, et plus particuli\u00e8rement aux Crino\u00efdes. Elle repr\u00e9sente la famille des Antedonid\u00e9s. Pr\u00e9sente depuis la frange inf\u00e9rieure de la zone intertidale, alternativement couverte et d\u00e9couverte par [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[28,45,23],"class_list":["post-6373","post","type-post","status-publish","format-standard","hentry","category-a-la-une","tag-biologie","tag-echinoderme","tag-observation"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/comments?post=6373"}],"version-history":[{"count":16,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6373\/revisions"}],"predecessor-version":[{"id":6423,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6373\/revisions\/6423"}],"wp:attachment":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/media?parent=6373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/categories?post=6373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/tags?post=6373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}