{"id":5190,"date":"2026-06-15T11:21:40","date_gmt":"2026-06-15T09:21:40","guid":{"rendered":"https:\/\/www.fredonoccitanie.com\/eesh\/?p=5190"},"modified":"2026-06-15T11:21:40","modified_gmt":"2026-06-15T09:21:40","slug":"ophraella-les-observations-reprennent-letude-se-poursuit-3","status":"publish","type":"post","link":"https:\/\/www.fredonoccitanie.com\/eesh\/2026\/06\/15\/ophraella-les-observations-reprennent-letude-se-poursuit-3\/","title":{"rendered":"[Ophraella] Premiers enseignements du suivi apr\u00e8s les l\u00e2chers 2025"},"content":{"rendered":"<p>La 1<sup>\u00e8re<\/sup> semaine de juin, l\u2019INRAE a effectu\u00e9 une tourn\u00e9e sur les 16 points de l\u00e2chers d\u2019Ophraella de l\u2019an pass\u00e9. FREDON Occitanie a pr\u00eat\u00e9 main forte sur les points de l\u2019est.<\/p>\n<p>L\u2019objectif \u00e9tait de voir si l\u2019on retrouvait des Ophraella sur ces sites.<\/p>\n<p>Pour rappel, les Ophraella passent l\u2019hiver sous forme adulte en s\u2019enfouissant dans des d\u00e9bris v\u00e9g\u00e9taux\u00a0; les adultes ressortent l\u2019ann\u00e9e suivante au moment o\u00f9 les ambroisies germent, pouvant ainsi occasionner des d\u00e9g\u00e2ts pr\u00e9coces et efficaces.<\/p>\n<p><strong>Mais beaucoup d\u2019al\u00e9as<\/strong> peuvent perturber cette hibernation\u00a0: crues ou inondations, travaux m\u00e9caniques ou chimiques, enfouissement des sites, etc. Dans notre cas, une autre composante entrait aussi en consid\u00e9ration\u00a0: les quantit\u00e9s d\u2019Ophraella observ\u00e9es sur les sites fin ao\u00fbt 2025, laissant pr\u00e9sager plus ou moins de chances d\u2019observer une pr\u00e9sence ou non en 2026.<\/p>\n<p>Lors de cette premi\u00e8re tourn\u00e9e, des Ophraella ont \u00e9t\u00e9 observ\u00e9es sur deux sites, avec des effectifs encore faibles.<strong> Ces observations confirment une pr\u00e9sence sur certains secteurs apr\u00e8s l\u2019hiver et constituent un premier point d\u2019appui pour le suivi 2026. <\/strong>La deuxi\u00e8me tourn\u00e9e, programm\u00e9e la derni\u00e8re semaine d\u2019ao\u00fbt, permettra de mieux appr\u00e9cier l\u2019\u00e9volution de ces populations au cours de la saison.<\/p>\n<div id=\"attachment_5192\" style=\"width: 213px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5192\" class=\"size-medium wp-image-5192\" src=\"https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/degats_ophra-203x300.png\" alt=\"\" width=\"203\" height=\"300\" srcset=\"https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/degats_ophra-203x300.png 203w, https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/degats_ophra.png 362w\" sizes=\"auto, (max-width: 203px) 100vw, 203px\" \/><p id=\"caption-attachment-5192\" class=\"wp-caption-text\">D\u00e9g\u00e2ts pr\u00e9coces d&rsquo;Ophraella sur ambroisie<\/p><\/div>\n<p>FREDON Occitanie a profit\u00e9 de ces observations pour animer des r\u00e9unions d\u2019information sur le terrain. Les pr\u00e9sents ont eu le plaisir de participer \u00e0 la recherche des Ophraella. Cela a aussi \u00e9t\u00e9 <strong>l\u2019occasion de former de nouveaux r\u00e9f\u00e9rents.<\/strong><\/p>\n<div id=\"attachment_5191\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5191\" class=\"size-medium wp-image-5191\" src=\"https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/0603_calcatelle-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/0603_calcatelle-300x169.jpg 300w, https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/0603_calcatelle-1030x579.jpg 1030w, https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/0603_calcatelle-768x432.jpg 768w, https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/0603_calcatelle-1536x864.jpg 1536w, https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/0603_calcatelle-2048x1152.jpg 2048w, https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/0603_calcatelle-1500x844.jpg 1500w, https:\/\/www.fredonoccitanie.com\/eesh\/wp-content\/uploads\/sites\/5\/2026\/06\/0603_calcatelle-705x397.jpg 705w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-5191\" class=\"wp-caption-text\">Dans le Gard<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>La 1\u00e8re semaine de juin, l\u2019INRAE a effectu\u00e9 une tourn\u00e9e sur les 16 points de l\u00e2chers d\u2019Ophraella de l\u2019an pass\u00e9. FREDON Occitanie a pr\u00eat\u00e9 main forte sur les points de l\u2019est. L\u2019objectif \u00e9tait de voir si l\u2019on retrouvait des Ophraella sur ces sites. Pour rappel, les Ophraella passent l\u2019hiver sous forme adulte en s\u2019enfouissant dans [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":3065,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,2],"tags":[],"class_list":["post-5190","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-ambroisies","category-actualites-fredon"],"_links":{"self":[{"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/posts\/5190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/comments?post=5190"}],"version-history":[{"count":2,"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/posts\/5190\/revisions"}],"predecessor-version":[{"id":5221,"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/posts\/5190\/revisions\/5221"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/media\/3065"}],"wp:attachment":[{"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/media?parent=5190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/categories?post=5190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fredonoccitanie.com\/eesh\/wp-json\/wp\/v2\/tags?post=5190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}