{"id":6061,"date":"2014-02-10T08:00:12","date_gmt":"2014-02-10T07:00:12","guid":{"rendered":"http:\/\/codexvirtualis.fr\/codex\/?p=6061"},"modified":"2014-02-02T17:20:22","modified_gmt":"2014-02-02T16:20:22","slug":"semaine-07-2014","status":"publish","type":"post","link":"https:\/\/codexvirtualis.fr\/codex\/semaine-07-2014","title":{"rendered":"Semaine 07-2014"},"content":{"rendered":"

Une citation<\/h2>\n

\u00ab\u00a0Nous pourrions facilement nous d\u00e9brouiller dans la vie si nous laissions \u00e0 chaque jour sa peine. En effet, le fardeau devient trop lourd si nous devons porter celui d’hier avec celui d’aujourd’hui et ajouter celui de demain avant que cela ne soit n\u00e9cessaire.\u00a0\u00bb<\/p>\n

J. Newton<\/p>\n

  <\/p>\n

Une image<\/h2>\n
\"Pourpre\"<\/a>
Pourpre (Crozon, f\u00e9vrier 2008)<\/figcaption><\/figure>\n

  <\/p>\n

Le Pourpre (Nucella lapillus<\/em>) est un Mollusque Gast\u00e9ropode de la famille des Muricid\u00e9s.<\/p>\n

Il fr\u00e9quente les c\u00f4tes rocheuses, depuis la zone intertidale, alternativement couverte et d\u00e9couverte par la mar\u00e9e, jusqu’\u00e0 une quarantaine de m\u00e8tres de profondeur, d\u00e8s lors qu’elles ne sont pas couvertes d’algues.<\/p>\n

  <\/p>\n

Le Pourpre est identifi\u00e9 \u00e0 la taille et \u00e0 la forme de sa coquille.<\/p>\n

Haute de 40 mm environ chez l’adulte<\/a>, elle poss\u00e8de un apex pointu et \u00e0 l’oppos\u00e9 une ouverture ovale prolong\u00e9e par un canal siphonal.
\nLes trois quarts de la hauteur correspondent au dernier tour de spire.<\/p>\n

\u00c9paisse, elle est g\u00e9n\u00e9ralement lisse mais elle pr\u00e9sente parfois des reliefs, en l’occurrence des c\u00f4tes.<\/p>\n

Si les formes uniform\u00e9ment color\u00e9es sont nombreuses et diverses (blanches, jaunes, verd\u00e2tres, brunes etc.), certains individus arborent des coquilles orn\u00e9es de bandes larges ou fines, de colorations vari\u00e9es.<\/p>\n

L’animal porte un opercule corn\u00e9 qui lui permet d’obturer l’ouverture de sa coquille. <\/p>\n

  <\/p>\n

Le Pourpre est pr\u00e9dateur : son r\u00e9gime alimentaire est principalement compos\u00e9 de Balanes<\/a> et de Moules, ainsi que d’autres Mollusques.<\/p>\n

Il perfore leur enveloppe calcifi\u00e9e ou leur coquille gr\u00e2ce \u00e0 l’action conjugu\u00e9e de sa radula, sorte de langue r\u00e2peuse associ\u00e9e \u00e0 la bouche et h\u00e9riss\u00e9e de dents, et d’une solution enzymatique acide produite par un organe sp\u00e9cialis\u00e9.<\/p>\n

Un orifice circulaire est ainsi perc\u00e9, par lequel le Pourpre introduit un proboscis, sorte de trompe, lui permettant d’ing\u00e9rer les tissus de la proie.<\/p>\n

  <\/p>\n

Pour en savoir plus, consulter :<\/p>\n

• <\/span>le site 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

et notamment<\/p>\n

• <\/span>la fiche SCOUPPE Christian, ZIEMSKI Fr\u00e9d\u00e9ric, in : DORIS, 29\/10\/2013 : Nucella lapillus (Linnaeus, 1758)<\/a> (adresse : http:\/\/doris.ffessm.fr\/fiche2.asp?fiche_numero=1359)<\/p>\n

  <\/p>\n

\n","protected":false},"excerpt":{"rendered":"

Une citation \u00ab\u00a0Nous pourrions facilement nous d\u00e9brouiller dans la vie si nous laissions \u00e0 chaque jour sa peine. En effet, le fardeau devient trop lourd si nous devons porter celui d’hier avec celui d’aujourd’hui et ajouter celui de demain avant que cela ne soit n\u00e9cessaire.\u00a0\u00bb J. Newton   Une image   Le Pourpre (Nucella lapillus) […]<\/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":"","jetpack_post_was_ever_published":false},"categories":[1],"tags":[28,12,23],"class_list":["post-6061","post","type-post","status-publish","format-standard","hentry","category-a-la-une","tag-biologie","tag-mollusque","tag-observation"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t