Face \u00e0 ces d\u00e9fis, l\u2019\u00e9quipe de recherche a voulu mettre la main \u00e0 la p\u00e2te et identifier des souches de t\u00e9n\u00e9brions meuniers \u2013 aussi appel\u00e9s vers de farine \u00e0 l\u2019\u00e9tat de larves \u2013 naturellement plus r\u00e9sistantes aux maladies.<\/p>\n
Guillaume Saint-Jacques a men\u00e9 des exp\u00e9riences sur plusieurs lign\u00e9es de t\u00e9n\u00e9brions meuniers expos\u00e9es \u00e0 la bact\u00e9rie Serratia marcescens, connue pour infecter plusieurs familles d\u2019insectes. Au total, 200\u00a0larves de 10\u00a0souches ont \u00e9t\u00e9 test\u00e9es (pour un total de 2000\u00a0larves) et 2\u00a0souches se sont d\u00e9marqu\u00e9es, soit celle d\u2019origine turque et la fran\u00e7aise.<\/p>\n
\u00abCertaines pr\u00e9sentaient une croissance rapide et une faible mortalit\u00e9, tandis que d\u2019autres, plus lentes \u00e0 se d\u00e9velopper, semblaient mieux r\u00e9sister aux infections. Cela laisse entrevoir qu\u2019il serait possible d\u2019orienter les \u00e9levages vers des lign\u00e9es plus robustes\u00bb, pr\u00e9cise l\u2019\u00e9tudiant.<\/p>\n
Mais les m\u00e9canismes derri\u00e8re cette r\u00e9sistance restent flous. Plusieurs hypoth\u00e8ses sont envisag\u00e9es: des facteurs g\u00e9n\u00e9tiques, le r\u00f4le du microbiote ou encore un ph\u00e9nom\u00e8ne appel\u00e9 \u00abamor\u00e7age immunitaire\u00bb, soit la transmission par les parents d\u2019une certaine protection \u00e0 un pathog\u00e8ne apr\u00e8s exposition, explique Marie-Odile Benoit-Biancamano.<\/p>\n","protected":false},"excerpt":{"rendered":"Face \u00e0 ces d\u00e9fis, l\u2019\u00e9quipe de recherche a voulu mettre la main \u00e0 la p\u00e2te et identifier des…\n","protected":false},"author":2,"featured_media":187324,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[7],"tags":[4585,7207,43573,43565,43574,43568,27059,355,43566,14626,14627,43567,27060,27061,43564,43570,2607,43569,43572,61,57,59,58,43571,23,60,62],"class_list":["post-187323","post","type-post","status-publish","format-standard","has-post-thumbnail","category-sciences-et-technologies","tag-bacterie","tag-biologie","tag-centre-de-la-science-de-la-biodiversite-du-quebec","tag-colin-favret","tag-csbq","tag-departement-de-pathologie-et-microbiologie","tag-departement-de-sciences-biologiques","tag-environnement","tag-faculte-de-medecine-veterinaire","tag-faculte-des-arts-et-des-sciences","tag-fas","tag-fmv","tag-institut-de-recherche-en-biologie-vegetale","tag-irbv","tag-marie-odile-benoit-biancamano","tag-rbiq","tag-recherche","tag-reseau-de-bio-imagerie-du-quebec","tag-sbl","tag-science","tag-science-and-technology","tag-sciences","tag-sciences-et-technologies","tag-station-de-biologie-des-laurentides","tag-suisse","tag-technologies","tag-technology"],"share_on_mastodon":{"url":"","error":"Validation failed: Text character limit of 500 exceeded"},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/posts\/187323","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/comments?post=187323"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/posts\/187323\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/media\/187324"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/media?parent=187323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/categories?post=187323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ch-fr\/wp-json\/wp\/v2\/tags?post=187323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}