{"id":6294,"date":"2014-04-07T08:00:01","date_gmt":"2014-04-07T06:00:01","guid":{"rendered":"http:\/\/codexvirtualis.fr\/codex\/?p=6294"},"modified":"2015-11-11T18:29:18","modified_gmt":"2015-11-11T17:29:18","slug":"semaine-15-2014","status":"publish","type":"post","link":"https:\/\/codexvirtualis.fr\/codex\/semaine-15-2014","title":{"rendered":"Semaine 15-2014"},"content":{"rendered":"<h2>Une citation<\/h2>\n<p>\u00ab\u00a0Une pens\u00e9e personnelle est aussi rare qu&rsquo;une p\u00e9pite d&rsquo;or dans le caniveau.\u00a0\u00bb<\/p>\n<p>C. Morgenstern<\/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\/Actinia_fragacea01_09-WEB.JPG\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Actinia_fragacea01_09-WEB.JPG\" width=\"300\" alt=\"Actinie fraise\" class \/><\/a><figcaption class=\"wp-caption-text\">Actinie fraise (Roscoff, f\u00e9vrier 2011)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>L&rsquo;Actinie fraise (<em>Actinia fragacea<\/em>) est une An\u00e9mone de mer de la famille des Actiniid\u00e9s. Elle appartient au groupe des Cnidaires, et plus pr\u00e9cis\u00e9ment \u00e0 celui des Anthozoaires.<\/p>\n<p>Elle est pr\u00e9sente dans la partie basse de la zone intertidale, alternativement \u00e9merg\u00e9e et immerg\u00e9e par la mar\u00e9e, mais est aussi observ\u00e9e jusqu\u2019\u00e0 des profondeurs de l\u2019ordre de 10 m\u00e8tres.<\/p>\n<p>Install\u00e9e en milieu rocheux, elle occupe les cuvettes et les crevasses, ainsi que la face inf\u00e9rieure des pierres.<\/p>\n<p> &nbsp; <\/p>\n<p>L&rsquo;Actinie fraise est ais\u00e9ment identifi\u00e9e \u00e0 sa forme, sa taille et sa couleur.<\/p>\n<p>Elle est form\u00e9e d\u2019une colonne cylindrique dont la hauteur peut atteindre 100 mm pour un diam\u00e8tre \u00e9quivalent. Ses dimensions moyennes sont plus modestes, de l\u2019ordre de 70 mm de diam\u00e8tre et de hauteur.<br \/>\nElle adh\u00e8re au rocher par un disque basal \u00e9vas\u00e9.<br \/>\n\u00c0 l\u2019oppos\u00e9, elle porte de multiples tentacules. Au nombre de deux cents environ, ils sont de couleur rouge plus ou moins vive, et pr\u00e9sentent des extr\u00e9mit\u00e9s effil\u00e9es et parfois claires. Ils entourent un orifice qui fait office \u00e0 la fois de bouche et d\u2019anus. L\u2019ensemble constitue un disque oral.<\/p>\n<p>La couleur de la colonne de l\u2019Actinie fraise est rouge, parsem\u00e9e de petites taches vertes. Sa partie sup\u00e9rieure poss\u00e8de de petites saillies claires, blanches ou bleut\u00e9es, correspondant \u00e0 des acrorhages, v\u00e9sicules concentrant des cellules urticantes impliqu\u00e9es dans la d\u00e9fense de l&rsquo;animal.<\/p>\n<p> &nbsp; <\/p>\n<p>L\u2019Actinie fraise a un r\u00e9gime alimentaire carnivore : elle se nourrit de diverses proies (poissons, crustac\u00e9s, d\u00e9bris).<br \/>\nElle en r\u00e9alise la capture gr\u00e2ce \u00e0 ses tentacules munis de cellules urticantes assurant l\u2019injection d\u2019un venin paralysant.<br \/>\nLes proies sont alors port\u00e9es \u00e0 la bouche par les tentacules, aval\u00e9es puis dig\u00e9r\u00e9es. Les \u00e9gestats sont \u00e9limin\u00e9s par la m\u00eame voie.<\/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=912\" target=\"_blank\">ZIEMSKI Fr\u00e9d\u00e9ric, BORG David,  in : DORIS, 28\/2\/2014 : Actinia fragacea Tugwell, 1856<\/a> (adresse : http:\/\/doris.ffessm.fr\/fiche2.asp?fiche_numero=912)<\/p>\n<p> &nbsp; <\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>Une citation \u00ab\u00a0Une pens\u00e9e personnelle est aussi rare qu&rsquo;une p\u00e9pite d&rsquo;or dans le caniveau.\u00a0\u00bb C. Morgenstern &nbsp; Une image &nbsp; L&rsquo;Actinie fraise (Actinia fragacea) est une An\u00e9mone de mer de la famille des Actiniid\u00e9s. Elle appartient au groupe des Cnidaires, et plus pr\u00e9cis\u00e9ment \u00e0 celui des Anthozoaires. Elle est pr\u00e9sente dans la partie basse de [&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":[28,39,23],"class_list":["post-6294","post","type-post","status-publish","format-standard","hentry","category-a-la-une","tag-biologie","tag-cnidaire","tag-observation"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6294","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=6294"}],"version-history":[{"count":13,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6294\/revisions"}],"predecessor-version":[{"id":8111,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6294\/revisions\/8111"}],"wp:attachment":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/media?parent=6294"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/categories?post=6294"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/tags?post=6294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}