{"id":6299,"date":"2014-04-14T08:00:29","date_gmt":"2014-04-14T06:00:29","guid":{"rendered":"http:\/\/codexvirtualis.fr\/codex\/?p=6299"},"modified":"2015-11-11T19:05:40","modified_gmt":"2015-11-11T18:05:40","slug":"semaine-16-2014","status":"publish","type":"post","link":"https:\/\/codexvirtualis.fr\/codex\/semaine-16-2014","title":{"rendered":"Semaine 16-2014"},"content":{"rendered":"<h2>Une citation<\/h2>\n<p>\u00ab\u00a0Un esprit noble ne pr\u00e9dit pas ce qu&rsquo;il fait tant qu&rsquo;il n&rsquo;a pas fait ce qu&rsquo;il pr\u00e9dit.\u00a0\u00bb<\/p>\n<p>Confucius<\/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\/IMGP5893_actinia_fragacea_2009-WEB.JPG\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/IMGP5893_actinia_fragacea_2009-WEB.JPG\" width=\"300\" alt=\"Actinie fraise\" class \/><\/a><figcaption class=\"wp-caption-text\">Actinie fraise (Crozon, f\u00e9vrier 2009)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>L\u2019Actinie fraise (<em>Actinia fragacea<\/em>) est un repr\u00e9sentant du groupe des Cnidaires. Au sein des Anthozoaires, elle appartient \u00e0 la famille des Actiniid\u00e9s.<\/p>\n<p>Elle a fait l\u2019objet de l\u2019article de la <a href=\"\/codex\/semaine-15-2014\">semaine 15-2014<\/a>.<\/p>\n<p> &nbsp; <\/p>\n<p>Hors de l&rsquo;eau, \u00e0 mar\u00e9e basse, l&rsquo;Actinie fraise r\u00e9tracte ses tentacules dans sa colonne.<br \/>\nElle prend alors la forme d&rsquo;une sph\u00e8re dont les couleurs rappellent celles d&rsquo;une fraise : de multiples points verd\u00e2tres sont diss\u00e9min\u00e9s sur un fond rouge.<br \/>\nCette ressemblance est \u00e0 l&rsquo;origine du nom vernaculaire de l&rsquo;esp\u00e8ce.<\/p>\n<p> &nbsp; <\/p>\n<p>L&rsquo;Actinie fraise est une esp\u00e8ce gonochorique : il existe des individus m\u00e2les et des individus femelles, les sexes sont s\u00e9par\u00e9s.<\/p>\n<p>La reproduction sexu\u00e9e implique la lib\u00e9ration des gam\u00e8tes m\u00e2les, ou spermatozo\u00efdes, et des gam\u00e8tes femelles, ou ovules, dans le milieu.<br \/>\nLa f\u00e9condation a lieu dans l&rsquo;eau de mer.<br \/>\nLe <a href=\"\/codex\/glossaire\/glossaire-de-d-a-h#developpement-embryonnaire\" target=\"_blank\">d\u00e9veloppement embryonnaire<\/a> prend fin avec l&rsquo;\u00e9closion qui lib\u00e8re une <a href=\"\/codex\/glossaire\/glossaire-de-i-a-o#larve\" target=\"_blank\">larve<\/a> appel\u00e9e planula.<br \/>\nApr\u00e8s avoir men\u00e9 une vie planctonique, elle se pose sur le substrat et se transforme en An\u00e9mone <a href=\"\/codex\/glossaire\/glossaire-de-i-a-o#juvenile\" target=\"_blank\">juv\u00e9nile<\/a>.<\/p>\n<p>Cette esp\u00e8ce est par ailleurs capable de reproduction asexu\u00e9e : chaque individu peut donner naissance \u00e0 deux individus fils par scission.<br \/>\nSeules des divisions mitotiques interviennent dans ce processus.<\/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\u00a0Un esprit noble ne pr\u00e9dit pas ce qu&rsquo;il fait tant qu&rsquo;il n&rsquo;a pas fait ce qu&rsquo;il pr\u00e9dit.\u00a0\u00bb Confucius &nbsp; Une image &nbsp; L\u2019Actinie fraise (Actinia fragacea) est un repr\u00e9sentant du groupe des Cnidaires. Au sein des Anthozoaires, elle appartient \u00e0 la famille des Actiniid\u00e9s. Elle a fait l\u2019objet de l\u2019article de la semaine [&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-6299","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\/6299","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=6299"}],"version-history":[{"count":12,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6299\/revisions"}],"predecessor-version":[{"id":8115,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6299\/revisions\/8115"}],"wp:attachment":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/media?parent=6299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/categories?post=6299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/tags?post=6299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}