{"id":5633,"date":"2013-09-06T21:55:16","date_gmt":"2013-09-06T19:55:16","guid":{"rendered":"http:\/\/codexvirtualis.fr\/codex\/?page_id=5633"},"modified":"2013-09-06T22:10:41","modified_gmt":"2013-09-06T20:10:41","slug":"dans-lintimite-des-escargots","status":"publish","type":"page","link":"https:\/\/codexvirtualis.fr\/codex\/cabinet-de-curiosites-virtuel\/dans-lintimite-des-animaux\/dans-lintimite-des-escargots","title":{"rendered":"Dans l&rsquo;intimit\u00e9 des Escargots"},"content":{"rendered":"<p> &nbsp; <\/p>\n<h2>Le cycle de d\u00e9veloppement de l&rsquo;Escargot des haies<\/h2>\n<p>Dans nos r\u00e9gions la reproduction des Escargots des haies (<em>Cepaea nemoralis<\/em>) intervient au printemps.<\/p>\n<p> &nbsp; <\/p>\n<p>Affectionnant l&rsquo;humidit\u00e9, ces animaux sont actifs par temps pluvieux ou pendant la nuit. Ils se d\u00e9placent alors \u00e0 l&rsquo;aide de leur pied transform\u00e9 en sole de reptation, d\u00e9posant sur le substrat une tra\u00een\u00e9e de mucus.<\/p>\n<p>Ce sont ces pistes de mucus, d\u00e9tect\u00e9es gr\u00e2ce \u00e0 leurs tentacules, qui permettent aux Escargots des haies de rep\u00e9rer leurs partenaires potentiels et de s&rsquo;en approcher.<\/p>\n<p> &nbsp; <\/p>\n<p>D\u00e9bute alors un long et lent ballet auquel prennent part les deux partenaires.<\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis85_10-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis85_10-WEB.jpg\" width=\"300\" alt=\"Parade nuptiale de l'Escargot des haies\" class \/><\/a><figcaption class=\"wp-caption-text\">Parade  nuptiale chez l&rsquo;Escargot des haies (Lyon, avril 2010 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>Ils s&rsquo;approchent l&rsquo;un de l&rsquo;autre&#8230;<\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis88_10-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis88_10-WEB.jpg\" width=\"300\" alt=\"Parade nuptiale de l'Escargot des haies\" class \/><\/a><figcaption class=\"wp-caption-text\">Parade  nuptiale chez l&rsquo;Escargot des haies (Lyon, avril 2010 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>&#8230; leurs tentacules se fr\u00f4lent&#8230;<\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis121_10-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis121_10-WEB.jpg\" width=\"300\" alt=\"Parade nuptiale de l'Escargot des haies\" class \/><\/a><figcaption class=\"wp-caption-text\">Parade  nuptiale chez l&rsquo;Escargot des haies (Lyon, avril 2010 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>&#8230; avant qu&rsquo;ils s&rsquo;\u00e9loignent \u00e0 nouveau&#8230;<\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis89_10-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis89_10-WEB.jpg\" width=\"300\" alt=\"Parade nuptiale de l'Escargot des haies\" class \/><\/a><figcaption class=\"wp-caption-text\">Parade  nuptiale chez l&rsquo;Escargot des haies (Lyon, avril 2010 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>&#8230; pour se retrouver ensuite&#8230;<\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis91_10-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis91_10-WEB.jpg\" width=\"300\" alt=\"Parade nuptiale de l'Escargot des haies\" class \/><\/a><figcaption class=\"wp-caption-text\">Parade  nuptiale chez l&rsquo;Escargot des haies (Lyon, avril 2010 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>&#8230; et s&rsquo;effleurer encore&#8230;<\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis120_10-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/parade_cepaea_nemoralis120_10-WEB.jpg\" width=\"300\" alt=\"Parade nuptiale de l'Escargot des haies\" class \/><\/a><figcaption class=\"wp-caption-text\">Parade  nuptiale chez l&rsquo;Escargot des haies (Lyon, avril 2010 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>Cette parade nuptiale peut durer plusieurs heures.<\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/accouplement_cepaea_nemoralis97_10-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/accouplement_cepaea_nemoralis97_10-WEB.jpg\" width=\"300\" alt=\"Accouplement de l'Escargot des haies\" class \/><\/a><figcaption class=\"wp-caption-text\">Accouplement chez l&rsquo;Escargot des haies (Lyon, avril 2010 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>L&rsquo;accouplement intervient ensuite.<\/p>\n<p>Les deux partenaires se disposent de sorte que leurs orifices g\u00e9nitaux, situ\u00e9s sur le c\u00f4t\u00e9 droit du corps, en arri\u00e8re de la t\u00eate, soient face \u00e0 face.<\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/accouplement_cepaea_nemoralis83_10-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/accouplement_cepaea_nemoralis83_10-WEB.jpg\" width=\"300\" alt=\"Accouplement de l'Escargot des haies\" class \/><\/a><figcaption class=\"wp-caption-text\">Accouplement chez l&rsquo;Escargot des haies (Lyon, avril 2010 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>Chacun d\u00e9ploie un p\u00e9nis qui s&rsquo;accole au vagin de l&rsquo;autre, et par ce biais lui transf\u00e8re des spermatozo\u00efdes contenus dans une enveloppe, appel\u00e9e <a href=\"\/codex\/glossaire\/glossaire-de-p-a-s#spermatophore\" target=\"_blank\">spermatophore<\/a>.<\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/accouplement_Cepaea_nemoralis02_11-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/accouplement_Cepaea_nemoralis02_11-WEB.jpg\" width=\"300\" alt=\"Accouplement de l'Escargot des haies\" class \/><\/a><figcaption class=\"wp-caption-text\">Accouplement chez l&rsquo;Escargot des haies (Lyon, mars 2011 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>L&rsquo;accouplement est parfois r\u00e9alis\u00e9 dans des positions acrobatiques et peut, comme la parade nuptiale, durer plusieurs heures.<\/p>\n<p> &nbsp; <\/p>\n<p>Les Escargots des haies sont en fait des organismes hermaphrodites, c&rsquo;est \u00e0 dire \u00e0 la fois m\u00e2les et femelles.<\/p>\n<p>Chaque individu poss\u00e8de un ovotestis, gonade produisant des gam\u00e8tes m\u00e2les, les spermatozo\u00efdes, et des gam\u00e8tes femelles, les ovules.<\/p>\n<p>Les formations des gam\u00e8tes m\u00e2les et femelles par l&rsquo;ovotestis ne sont pas simultan\u00e9es mais successives : les spermatozo\u00efdes parviennent \u00e0 maturit\u00e9 avant les ovules.<\/p>\n<p> &nbsp; <\/p>\n<p>Au moment de l&rsquo;accouplement, les Escargots sont en phase m\u00e2le et \u00e9changent des spermatozo\u00efdes.<\/p>\n<p>Ceux-ci sont stock\u00e9s dans une bourse copulatrice puis une spermath\u00e8que jusqu&rsquo;\u00e0 maturit\u00e9 des ovules.<\/p>\n<p>La f\u00e9condation peut alors avoir lieu. R\u00e9alis\u00e9e \u00e0 l&rsquo;int\u00e9rieur de l&rsquo;organisme, en phase femelle cette fois, elle est qualifi\u00e9e d&rsquo;interne.<\/p>\n<p> &nbsp; <\/p>\n<p>Les <a href=\"\/codex\/glossaire\/glossaire-de-i-a-o#oeuf\" target=\"_blank\">\u0153ufs<\/a> f\u00e9cond\u00e9s sont ensuite d\u00e9pos\u00e9s dans une cavit\u00e9 que l&rsquo;Escargot creuse dans le sol humide \u00e0 l&rsquo;aide de son pied.<br \/>\nIl les recouvre alors de terre.<\/p>\n<p>Le <a href=\"\/codex\/glossaire\/glossaire-de-d-a-h#developpement-embryonnaire\" target=\"_blank\">d\u00e9veloppement embryonnaire<\/a> dure de deux \u00e0 trois semaines. <\/p>\n<p> &nbsp; <\/p>\n<figure style=\"width: 300px\" class=\"wp-caption alignnone\"><a rel=\"lightbox\" href=\"\/documents\/images\/Cepaea_nemoralis_intimite\/juvenile_Cepaea_sp08_11-WEB.jpg\" target=\"_blank\"><img decoding=\"async\" src=\"\/documents\/images\/Cepaea_nemoralis_intimite\/juvenile_Cepaea_sp08_11-WEB.jpg\" width=\"300\" alt=\"Escargots des haies juv\u00e9niles\" class \/><\/a><figcaption class=\"wp-caption-text\">Escargots des haies juv\u00e9niles (Lyon, mars 2011 &#8211; G. Rigaud)<\/figcaption><\/figure>\n<p> &nbsp; <\/p>\n<p>L&rsquo;\u00e9closion lib\u00e8re des individus semblables aux adultes en termes de plan d&rsquo;organisation, de mode et de milieu de vie.<br \/>\nIl s&rsquo;agit de <a href=\"\/codex\/glossaire\/glossaire-de-i-a-o#juvenile\" target=\"_blank\">juv\u00e9niles<\/a>, qui apr\u00e8s une p\u00e9riode de <a href=\"\/codex\/glossaire\/glossaire-de-d-a-h#developpement-post-embryonnaire\" target=\"_blank\">d\u00e9veloppement post-embryonnaire<\/a> de deux ans impliquant principalement un processus de croissance, acqui\u00e8rent la maturit\u00e9 sexuelle et deviennent <a href=\"\/codex\/glossaire\/glossaire-de-a-a-c#adulte\" target=\"_blank\">adultes<\/a>.<\/p>\n<p>Le d\u00e9veloppement des Escargots des haies est de ce fait qualifi\u00e9 de <a href=\"\/codex\/glossaire\/glossaire-de-d-a-h#developpement-direct\" target=\"_blank\">direct<\/a>.<\/p>\n<p> &nbsp; <\/p>\n<p>R\u00e9f\u00e9rence :<\/p>\n<p>L&rsquo;Escargot des haies, 2013. <a href=\"http:\/\/lahulotte.fr\" target=\"_blank\">La Hulotte<\/a> n\u00b097 et n\u00b098<\/p>\n<p> &nbsp; <\/p>\n<p>Pour en savoir plus :<\/p>\n<p><span style=\"color: #999999;\">&bull; <\/span>consulter la page <a href=\"\/codex\/cabinet-de-curiosites-virtuel\/images-insolites-instructives\/les-acrobaties-de-lescargot\" target=\"_blank\">Les acrobaties de l&rsquo;Escargot<\/a> du Cabinet de curiosit\u00e9s virtuel de Codex virtualis d\u00e9crivant le d\u00e9placement de l&rsquo;Escargot<\/p>\n<p><span style=\"color: #999999;\">&bull; <\/span>t\u00e9l\u00e9charger le <a href=\"\/documents\/telechargement\/Folia_conchyliologica\/Folia_Conchyliologica_11.pdf\" target=\"_blank\">num\u00e9ro 11<\/a> du mois de mai 2011 de la revue Folia conchyliologica, s&rsquo;int\u00e9ressant \u00e0 l&rsquo;histologie de l&rsquo;appareil g\u00e9nital de l&rsquo;Escargot <\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Le cycle de d\u00e9veloppement de l&rsquo;Escargot des haies Dans nos r\u00e9gions la reproduction des Escargots des haies (Cepaea nemoralis) intervient au printemps. &nbsp; Affectionnant l&rsquo;humidit\u00e9, ces animaux sont actifs par temps pluvieux ou pendant la nuit. Ils se d\u00e9placent alors \u00e0 l&rsquo;aide de leur pied transform\u00e9 en sole de reptation, d\u00e9posant sur le substrat [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":1747,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","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 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