{"id":17048,"date":"2023-11-25T07:36:53","date_gmt":"2023-11-25T06:36:53","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?p=17048"},"modified":"2023-11-25T18:20:41","modified_gmt":"2023-11-25T17:20:41","slug":"repas-de-ischnura-elegans","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2023\/11\/25\/repas-de-ischnura-elegans\/","title":{"rendered":"Ischnura elegans : repas"},"content":{"rendered":"\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-default wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-1.webp\"><img decoding=\"async\" width=\"1427\" height=\"1204\" data-id=\"17041\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-1.webp\" alt=\"Ischnura elegans m\u00e2le d\u00e9vorant un homopt\u00e8re, le Fuilet (F-49), 16\/09\/2007\" class=\"wp-image-17041 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-1.webp 1427w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-1-768x648.webp 768w\" data-sizes=\"(max-width: 1427px) 100vw, 1427px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1427px; --smush-placeholder-aspect-ratio: 1427\/1204;\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-5.webp\"><img decoding=\"async\" width=\"1558\" height=\"1204\" data-id=\"17045\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-5.webp\" alt=\"Ischnura elegans femelle d\u00e9vorant un dipt\u00e8re, \u00e9tang de Joreau (F-49), 26\/05\/2012\" class=\"wp-image-17045 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-5.webp 1558w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-5-768x593.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-5-1536x1187.webp 1536w\" data-sizes=\"(max-width: 1558px) 100vw, 1558px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1558px; --smush-placeholder-aspect-ratio: 1558\/1204;\" \/><\/a><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">Repas de Ischnura elegans : m\u00e2le d\u00e9vorant un homopt\u00e8re, le Fuilet (F-49), 16\/09\/2007 Ischnura elegans &#8211; femelle d\u00e9vorant un dipt\u00e8re, \u00e9tang de Joreau (F-49), 26\/05\/2012<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le repas de Ischnura elegans est tr\u00e8s vari\u00e9, tout ce qui vole, qui a 6 ou 8 pattes, de taille raisonnable, est susceptible d&rsquo;agr\u00e9menter le r\u00e9gime carnivore de notre petit odonate. <br>Comme on peut le constater, ce sont des photos assez anciennes pour la plupart et donc ces observations ne sont pas tr\u00e8s fr\u00e9quentes. Les photos ne sont pas non plus de tr\u00e8s bonne qualit\u00e9 et l&rsquo;identification de la proie n&rsquo;est pas facile.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-2.webp\"><img decoding=\"async\" width=\"2358\" height=\"1204\" data-id=\"17042\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-2.webp\" alt=\"Ischnura elegans m\u00e2le d\u00e9vorant un Trichoptera, Beaupr\u00e9au (F-49), 22\/05\/2008\" class=\"wp-image-17042 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-2.webp 2358w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-2-768x392.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-2-1536x784.webp 1536w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-2-2048x1046.webp 2048w\" data-sizes=\"(max-width: 2358px) 100vw, 2358px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 2358px; --smush-placeholder-aspect-ratio: 2358\/1204;\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-4.webp\"><img decoding=\"async\" width=\"2151\" height=\"1204\" data-id=\"17044\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-4.webp\" alt=\"Agrion \u00e9l\u00e9gant m\u00e2le d\u00e9vorant un homopt\u00e8re, Etang du bois de Ham (F-49), 30\/08\/2010\" class=\"wp-image-17044 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-4.webp 2151w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-4-768x430.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-4-1536x860.webp 1536w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-4-2048x1146.webp 2048w\" data-sizes=\"(max-width: 2151px) 100vw, 2151px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 2151px; --smush-placeholder-aspect-ratio: 2151\/1204;\" \/><\/a><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">Ischnura elegans m\u00e2le d\u00e9vorant un Trichoptera, Beaupr\u00e9au (F-49), 22\/05\/2008<br>Ischnura elegans m\u00e2le d\u00e9vorant un homopt\u00e8re, Etang du bois de Ham (F-49), 30\/08\/2010<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ci-dessous, ce m\u00e2le bien mature d\u00e9vore une petite araign\u00e9e ; les observations d&rsquo;odonates mangeant des araign\u00e9es sont rares, je n&rsquo;ai vu qu&rsquo;une seule autre photo montrant cette situation.<br>Certains odonates, comme <a href=\"http:\/\/www.meslibellules.fr\/voyages\/panama\/megaloprepus-caerulatus\/megaloprepus-caerulatus-femelle\/megaloprepus-caerulatus-femelle-2big.jpg\">Megaloprepus caerulatus<\/a>, sont des v\u00e9ritables sp\u00e9cialistes et se nourrissent des insectes qui ont fini leur parcours dans les toiles de certaines araign\u00e9es ; mais la consommation d&rsquo;araign\u00e9es, m\u00eame pour lui, est anecdotique.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-3.webp\"><img decoding=\"async\" width=\"1336\" height=\"1004\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-3.webp\" alt=\"Ischnura elegans femelle d\u00e9vorant une jeune araign\u00e9e, le Puiset Dor\u00e9 (F-49), 06\/08\/2008\" class=\"wp-image-17043 lazyload\" style=\"--smush-placeholder-width: 1336px; --smush-placeholder-aspect-ratio: 1336\/1004;width:514px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-3.webp 1336w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas-3-768x577.webp 768w\" data-sizes=\"(max-width: 1336px) 100vw, 1336px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Ischnura elegans femelle d\u00e9vorant une jeune araign\u00e9e, le Puiset Dor\u00e9 (F-49), 06\/08\/2008<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Si on voit tr\u00e8s fr\u00e9quemment les m\u00e2les Ischnura elegans agresser les autres odonates, les voir en manger un autre est rare et jusqu&rsquo;\u00e0 cette ann\u00e9e, je ne l&rsquo;avais jamais observ\u00e9 en France. Je n&rsquo;ai pas assist\u00e9 \u00e0 la capture de la proie, mais ce m\u00e2le Erythromma najas est tout juste sorti de son exuvie, il n&rsquo;a pas encore \u00ab\u00a0durci\u00a0\u00bb et son pr\u00e9dateur l&rsquo;a certainement <em>cueilli<\/em> sur la tige ou il a \u00e9merg\u00e9. Noter les petits points sombres sur l&rsquo;abdomen de la proie ; il s&rsquo;agit de minuscules larves d&rsquo;hydracariens parasites.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas6.webp\"><img decoding=\"async\" width=\"1065\" height=\"1204\" data-id=\"17047\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas6.webp\" alt=\"Ischnura elegans femelle d\u00e9vorant un Erythromma najas m\u00e2le \u00e9mergent, \u00e9tang de Joreau (F-49), 28\/05\/2023\" class=\"wp-image-17047 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas6.webp 1065w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas6-768x868.webp 768w\" data-sizes=\"(max-width: 1065px) 100vw, 1065px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1065px; --smush-placeholder-aspect-ratio: 1065\/1204;\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas6-bis.webp\"><img decoding=\"async\" width=\"997\" height=\"1204\" data-id=\"17046\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas6-bis.webp\" alt=\"Agrion \u00e9l\u00e9gant femelle d\u00e9vorant un Erythromma najas m\u00e2le \u00e9mergent, \u00e9tang de Joreau (F-49), 28\/05\/2023\" class=\"wp-image-17046 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas6-bis.webp 997w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Ischnura-elegans-repas6-bis-768x927.webp 768w\" data-sizes=\"(max-width: 997px) 100vw, 997px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 997px; --smush-placeholder-aspect-ratio: 997\/1204;\" \/><\/a><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">Ischnura elegans femelle d\u00e9vorant un Erythromma najas m\u00e2le \u00e9mergent, \u00e9tang de Joreau (F-49), 28\/05\/2023<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">L&rsquo;identification de la proie est difficile et en l&rsquo;absence du contexte, il serait difficile de trancher entre E. najas et E. lindenii, les 2 esp\u00e8ces volant ce jour sur l&rsquo;\u00e9tang. Mais les cerco\u00efdes, longs sont&#8230; trop courts pour E. lindenii et dans cette m\u00eame touffe de carex, 2 autres \u00e9mergences de E. najas se terminaient.<br><br>Sur <a href=\"https:\/\/www.insecte.org\/forum\/viewtopic.php?t=156100&amp;hilit=predation+entre+odonates\">ce lien<\/a>, on trouve 2 autres exemples o\u00f9 Ischnura elegans consomme un autre zygopt\u00e8re.<br>Sur <a href=\"https:\/\/www.insecte.org\/forum\/viewtopic.php?t=156080&amp;hilit=pr%C3%A9dation+par+odonates\">cet autre lien<\/a>, ce sont des cas de pr\u00e9dation d&rsquo;odonates sur diff\u00e9rents ordres (dont une pr\u00e9dation sur une Saltique) avec quelques Ischnura elegans comme pr\u00e9dateurs.<br><br>S&rsquo;il existe de nombreuses \u00e9tudes scientifiques \u00e9tudiant en d\u00e9tail l&rsquo;alimentation des larves et les facteurs intervenant sur leur croissance, je n&rsquo;ai pas trouv\u00e9 de documents s&rsquo;int\u00e9ressant particuli\u00e8rement au r\u00e9gime alimentaire des imagos.<\/p>\n\n\n\n<div style=\"height:38px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-vertical is-layout-flex wp-container-core-buttons-is-layout-2c90304e wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.meslibellules.fr\/blog\/ischnura-elegans-3\/\">Retour<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.meslibellules.fr\/blog\/ischnura-elegans-3\/\">Accueil Ischnura elegans<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Le repas de Ischnura elegans est tr\u00e8s vari\u00e9, tout ce qui vole, qui a 6 ou 8 pattes, de taille raisonnable, est susceptible d&rsquo;agr\u00e9menter le r\u00e9gime carnivore de notre petit odonate. Comme on peut le constater, ce sont des photos assez anciennes pour la plupart et donc ces observations ne sont pas tr\u00e8s fr\u00e9quentes. Les [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","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":"set","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":[60,55,61],"tags":[508,381],"class_list":["post-17048","post","type-post","status-publish","format-image","hentry","category-coenagrionidae-france","category-france","category-ischnura-elegans","tag-coenagrionidae-france","tag-france","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - 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