{"id":5800,"date":"2013-11-11T08:00:49","date_gmt":"2013-11-11T07:00:49","guid":{"rendered":"http:\/\/codexvirtualis.fr\/codex\/?p=5800"},"modified":"2013-10-20T14:35:30","modified_gmt":"2013-10-20T12:35:30","slug":"semaine-46-2013","status":"publish","type":"post","link":"https:\/\/codexvirtualis.fr\/codex\/semaine-46-2013","title":{"rendered":"Semaine 46-2013"},"content":{"rendered":"

Une citation<\/h2>\n

\u00ab\u00a0Les \u00eatres mauvais sont fiables, ils ne changent jamais.\u00a0\u00bb<\/p>\n

W. Faulkner<\/p>\n

  <\/p>\n

Une image<\/h2>\n
\"Leste<\/a>
Accouplement de Lestes verts (Lyon, octobre 2010 – G. Rigaud)<\/figcaption><\/figure>\n

  <\/p>\n

Le Leste vert (Lestes viridis<\/em>) appartient \u00e0 la famille des Lestid\u00e9s, repr\u00e9sentante des Demoiselles ou Zygopt\u00e8res, au sein de l’ordre des Odonates<\/a>.
\nIl a fait l’objet de l’article de la semaine 45-2013<\/a>.<\/p>\n

  <\/p>\n

La reproduction intervient en \u00e9t\u00e9 et en automne.<\/p>\n

L’accouplement donne lieu \u00e0 la formation d’un c\u0153ur copulatoire : le m\u00e2le tient la femelle en arri\u00e8re de la t\u00eate \u00e0 l’aide des appendices<\/a> qu’il porte \u00e0 l’extr\u00e9mit\u00e9 post\u00e9rieure de son corps, tandis que la femelle replie son abdomen<\/a> et accole son extr\u00e9mit\u00e9 aux premiers segments abdominaux du m\u00e2le.
\n\u00c0 cette occasion le m\u00e2le transf\u00e8re ses spermatozo\u00efdes, temporairement stock\u00e9s dans ses premiers segments abdominaux, \u00e0 la femelle dont les orifices g\u00e9nitaux sont situ\u00e9s \u00e0 l’extr\u00e9mit\u00e9 post\u00e9rieure du corps.<\/p>\n

La ponte ou oviposition intervient ensuite, les deux partenaires \u00e9tant associ\u00e9s en tandem.
\nLa femelle d\u00e9pose ses \u0153ufs<\/a> dans les parties dures des arbustes et arbres surplombant les pi\u00e8ces d’eau, \u00e0 la faveur d’incisions. Leur pr\u00e9sence conduit parfois \u00e0 la formation de galles.<\/p>\n

Le d\u00e9veloppement embryonnaire<\/a> d\u00e9bute et apr\u00e8s quelques semaines les \u0153ufs entrent en diapause<\/a>, forme de vie ralentie qui leur permet de passer l’hiver.<\/p>\n

Au printemps suivant, ils \u00e9closent, lib\u00e9rant des larves<\/a> qui gagnent l’eau et y r\u00e9alisent leur d\u00e9veloppement post-embryonnaire<\/a>. Cette phase du cycle est assez br\u00e8ve : elle peut \u00eatre achev\u00e9e en deux mois.
\nLa croissance est r\u00e9alis\u00e9e par des mues<\/a> successives, la derni\u00e8re co\u00efncidant avec la sortie de l’eau et permettant l’\u00e9mergence des adultes.<\/p>\n

  <\/p>\n

Pour en savoir plus sur le cycle de vie des Odonates, consulter la page Dans l’intimit\u00e9 des Demoiselles<\/a> de Codex virtualis<\/p>\n

  <\/p>\n

Pour acc\u00e9der aux images des Demoiselles et Libellules des parcs de Gerland et des berges du Rh\u00f4ne<\/a><\/p>\n

  <\/p>\n

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

Une citation \u00ab\u00a0Les \u00eatres mauvais sont fiables, ils ne changent jamais.\u00a0\u00bb W. Faulkner   Une image   Le Leste vert (Lestes viridis) appartient \u00e0 la famille des Lestid\u00e9s, repr\u00e9sentante des Demoiselles ou Zygopt\u00e8res, au sein de l’ordre des Odonates. Il a fait l’objet de l’article de la semaine 45-2013.   La reproduction intervient en \u00e9t\u00e9 […]<\/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":[28,17,23],"class_list":["post-5800","post","type-post","status-publish","format-standard","hentry","category-a-la-une","tag-biologie","tag-insecte","tag-observation"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/5800","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=5800"}],"version-history":[{"count":17,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/5800\/revisions"}],"predecessor-version":[{"id":5868,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/posts\/5800\/revisions\/5868"}],"wp:attachment":[{"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/media?parent=5800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/categories?post=5800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codexvirtualis.fr\/codex\/wp-json\/wp\/v2\/tags?post=5800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}