{"id":39680,"date":"2023-06-13T08:56:07","date_gmt":"2023-06-13T06:56:07","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=39680"},"modified":"2023-06-13T08:56:07","modified_gmt":"2023-06-13T06:56:07","slug":"les-araignees-auxiliaires-preponderantes-de-la-lutte-biologique","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/les-araignees-auxiliaires-preponderantes-de-la-lutte-biologique\/","title":{"rendered":"Les araign\u00e9es, auxiliaires pr\u00e9pond\u00e9rantes de la lutte biologique ?"},"content":{"rendered":"<p>Quatre chercheurs canadiens du Centre de G\u00e9nomique de la Biodiversit\u00e9 de l\u2019Universit\u00e9 de Guelph s\u2019int\u00e9ressent aux comportements alimentaires des araign\u00e9es dans les \u00e9cosyst\u00e8mes agricoles riches et diversifi\u00e9s.<br \/>\nSelon une m\u00e9ta-analyse de 58 \u00e9tudes publi\u00e9es, les araign\u00e9es ont supprim\u00e9 les insectes nuisibles agricoles dans 79 % des \u00e9tudes. Elles contribuent donc efficacement \u00e0 contr\u00f4ler ces populations.<\/p>\n<p>Un \u00e9chantillonnage de quatre mois dans une exploitation agricole pr\u00e8s de Toronto a permis d\u2019identifier 20 familles d\u2019araign\u00e9es qui se succ\u00e8dent sur la p\u00e9riode de mai \u00e0 ao\u00fbt. \u00c9tudier leur \u00e9cologie et leurs mouvements au cours de la saison permettraient d\u2019optimiser la gestion des pesticides dans les champs.<\/p>\n<p>Gr\u00e2ce \u00e0 une nouvelle technique de s\u00e9quen\u00e7age de fragments d\u2019ADN permettant d\u2019identifier les proies liqu\u00e9fi\u00e9es dans leur estomac, ils ont pu diff\u00e9rencier deux types de pr\u00e9dation : g\u00e9n\u00e9raliste ou sp\u00e9cialis\u00e9e.<\/p>\n<p>La richesse \u00e9cologique de l\u2019exploitation agricole influence fortement la diversit\u00e9 des groupes fonctionnels d\u2019araign\u00e9es. Elles affectionnent particuli\u00e8rement les zones humides et les bandes de prairies non fauch\u00e9es, qui leur apportent une diversit\u00e9 de proies mais aussi des zones de refuge lors des r\u00e9coltes ou des traitements des cultures.<\/p>\n<p>Mieux prot\u00e9ger les \u00e9cosyst\u00e8mes pour favoriser les araign\u00e9es am\u00e9liorerait les rendements de production en offrant une alternative durable au recours des produits chimiques contre les ravageurs.<\/p>","protected":false},"excerpt":{"rendered":"<p>Quatre chercheurs canadiens du Centre de G\u00e9nomique de la Biodiversit\u00e9 de l\u2019Universit\u00e9 de Guelph s\u2019int\u00e9ressent aux comportements alimentaires des araign\u00e9es dans les \u00e9cosyst\u00e8mes agricoles riches et diversifi\u00e9s. Selon une m\u00e9ta-analyse de 58 \u00e9tudes publi\u00e9es, les araign\u00e9es ont supprim\u00e9 les insectes nuisibles agricoles dans 79 % des \u00e9tudes. Elles contribuent donc efficacement \u00e0 contr\u00f4ler ces populations. [&hellip;]<\/p>","protected":false},"featured_media":39666,"template":"","categories":[50],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Les araign\u00e9es, auxiliaires pr\u00e9pond\u00e9rantes de la lutte biologique ? - For\u00eat.Nature<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/foretnature.be\/en\/resume-foret-mail\/les-araignees-auxiliaires-preponderantes-de-la-lutte-biologique\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les araign\u00e9es, auxiliaires pr\u00e9pond\u00e9rantes de la lutte biologique ? - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Quatre chercheurs canadiens du Centre de G\u00e9nomique de la Biodiversit\u00e9 de l\u2019Universit\u00e9 de Guelph s\u2019int\u00e9ressent aux comportements alimentaires des araign\u00e9es dans les \u00e9cosyst\u00e8mes agricoles riches et diversifi\u00e9s. Selon une m\u00e9ta-analyse de 58 \u00e9tudes publi\u00e9es, les araign\u00e9es ont supprim\u00e9 les insectes nuisibles agricoles dans 79 % des \u00e9tudes. Elles contribuent donc efficacement \u00e0 contr\u00f4ler ces populations. 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