{"id":6058,"date":"2014-02-03T08:00:04","date_gmt":"2014-02-03T07:00:04","guid":{"rendered":"http:\/\/codexvirtualis.fr\/codex\/?p=6058"},"modified":"2014-01-27T21:53:43","modified_gmt":"2014-01-27T20:53:43","slug":"semaine-06-2014","status":"publish","type":"post","link":"https:\/\/codexvirtualis.fr\/codex\/semaine-06-2014","title":{"rendered":"Semaine 06-2014"},"content":{"rendered":"<h2>Une citation<\/h2>\n<p>\u00ab\u00a0Lorsque Dieu a cr\u00e9\u00e9 l&rsquo;homme, il \u00e9tait d\u00e9j\u00e0 fatigu\u00e9\u00a0; tout s&rsquo;explique.\u00a0\u00bb<\/p>\n<p>M. Twain<\/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\/Littorina_nigrolineata_01_05-WEB.JPG\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Littorina_nigrolineata_01_05-WEB.JPG\" width=\"300\" alt=\"Littorine \u00e0 lignes noires\" class \/><\/a><figcaption class=\"wp-caption-text\">Littorine \u00e0 lignes noires (Roscoff, f\u00e9vrier 2005)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>La Littorine \u00e0 lignes noires (<em>Littorina compressa<\/em>) est un Mollusque Gast\u00e9ropode de la famille des Littorinid\u00e9s.<\/p>\n<p>Pr\u00e9sente en milieu rocheux principalement dans la partie moyenne de la zone de balancement des mar\u00e9es (\u00e9tage m\u00e9diolittoral), alternativement couverte et d\u00e9couverte par la mar\u00e9e, cette esp\u00e8ce se r\u00e9fugie dans les fissures ou sous les rochers \u00e0 mar\u00e9e basse.<br \/>\nElle produit alors un mucus qui, apr\u00e8s avoir durci \u00e0 l&rsquo;air, lui permet d&rsquo;adh\u00e9rer au substrat et de respirer, tout en la prot\u00e9geant de la d\u00e9shydratation.  <\/p>\n<p> &nbsp; <\/p>\n<p>Mesurant jusqu&rsquo;\u00e0 30 mm de haut, la coquille de la Littorine \u00e0 lignes noires est pointue et compte cinq \u00e0 six tours.<\/p>\n<p>Relativement \u00e9paisse elle est creus\u00e9e de sillons alternant avec des reliefs. Elle arbore une couleur de fond g\u00e9n\u00e9ralement claire, jaune ou beige, mais parfois verte ou orange, alors que le creux des sillons est sombre, de couleur brun fonc\u00e9.<\/p>\n<p>Elle poss\u00e8de une ouverture de forme ovale, qui peut \u00eatre obtur\u00e9e par un opercule en forme de goutte.<\/p>\n<p> &nbsp; <\/p>\n<p>La Littorine \u00e0 lignes noires est une esp\u00e8ce herbivore.<\/p>\n<p>Elle se nourrit des algues unicellulaires qui forment un film \u00e0 la surface des rochers et des algues brunes, ainsi que de fragments d&rsquo;algues.<\/p>\n<p>Elle d\u00e9tache des particules alimentaires \u00e0 l&rsquo;aide de sa radula, langue h\u00e9riss\u00e9e de dents associ\u00e9e \u00e0 la bouche, avant de les avaler.<\/p>\n<p> &nbsp; <\/p>\n<p>Les sexes sont s\u00e9par\u00e9s chez la Littorine \u00e0 lignes noires.<\/p>\n<p>Le m\u00e2le transmet des spermatozo\u00efdes \u00e0 la femelle \u00e0 la faveur d&rsquo;un accouplement, et la f\u00e9condation est interne, r\u00e9alis\u00e9e \u00e0 l&rsquo;int\u00e9rieur du corps de la femelle.<\/p>\n<p>Celle-ci d\u00e9pose des <a href=\"\/codex\/glossaire\/glossaire-de-i-a-o#oeuf\" target=\"_blank\">\u0153ufs<\/a> sous les rochers, enrob\u00e9s par une masse de consistance g\u00e9latineuse.<br \/>\nAu terme du <a href=\"\/codex\/glossaire\/glossaire-de-d-a-h#developpement-embryonnaire\" target=\"_blank\">d\u00e9veloppement embryonnaire<\/a>, les \u0153ufs \u00e9closent, lib\u00e9rant des individus <a href=\"\/codex\/glossaire\/glossaire-de-i-a-o#juvenile\" target=\"_blank\">juv\u00e9niles<\/a> dont le milieu et le mode de vie sont semblables \u00e0 ceux des <a href=\"\/codex\/glossaire\/glossaire-de-a-a-c#adulte\" target=\"_blank\">adultes<\/a>.<\/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=1426\" target=\"_blank\">SCOUPPE Christian, ZIEMSKI Fr\u00e9d\u00e9ric,  in : DORIS, 9\/6\/2012 : Littorina saxatilis (L. rudis, L. nigrolineata) (Olivi, 1792)<\/a> (adresse : http:\/\/doris.ffessm.fr\/fiche2.asp?fiche_numero=1426)<\/p>\n<p> &nbsp; <\/p>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>Une citation \u00ab\u00a0Lorsque Dieu a cr\u00e9\u00e9 l&rsquo;homme, il \u00e9tait d\u00e9j\u00e0 fatigu\u00e9\u00a0; tout s&rsquo;explique.\u00a0\u00bb M. Twain &nbsp; Une image &nbsp; La Littorine \u00e0 lignes noires (Littorina compressa) est un Mollusque Gast\u00e9ropode de la famille des Littorinid\u00e9s. Pr\u00e9sente en milieu rocheux principalement dans la partie moyenne de la zone de balancement des mar\u00e9es (\u00e9tage m\u00e9diolittoral), alternativement couverte [&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":[28,12,23],"class_list":["post-6058","post","type-post","status-publish","format-standard","hentry","category-a-la-une","tag-biologie","tag-mollusque","tag-observation"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6058","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=6058"}],"version-history":[{"count":11,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6058\/revisions"}],"predecessor-version":[{"id":6090,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/6058\/revisions\/6090"}],"wp:attachment":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/media?parent=6058"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/categories?post=6058"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/tags?post=6058"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}