{"id":4470,"date":"2022-10-11T15:56:48","date_gmt":"2022-10-11T13:56:48","guid":{"rendered":"https:\/\/www.andermatt.com\/?p=4470"},"modified":"2026-04-01T10:33:55","modified_gmt":"2026-04-01T08:33:55","slug":"andermatt-canada-success-story-with-lymantria-dispar-mnpv","status":"publish","type":"post","link":"https:\/\/www.andermatt.com\/fr\/andermatt-canada-success-story-with-lymantria-dispar-mnpv\/","title":{"rendered":"Andermatt Canada : une r\u00e9ussite avec Lymantria dispar MNPV"},"content":{"rendered":"

Andermatt Canada a \u00e9t\u00e9 cr\u00e9\u00e9e en 2006 et aide depuis lors les gestionnaires forestiers canadiens et am\u00e9ricains \u00e0 r\u00e9glementer Lymantria dispar<\/em> depuis 2009. Lymantria dispar<\/em> est un important ravageur forestier dont l'aire de r\u00e9partition g\u00e9ographique est exceptionnellement large, depuis son territoire d'origine en Europe jusqu'au nord de l'Am\u00e9rique du Nord. R\u00e9cemment, Andermatt Canada a contribu\u00e9 \u00e0 limiter l'expansion de l'insecte. Lymantria dispar<\/em> dans la ville de Toronto tout en aidant la ville \u00e0 surmonter les pr\u00e9occupations du public concernant les esp\u00e8ces en p\u00e9ril dans la zone d'application. <\/p>\n\n\n\n

Lymantria dispar<\/em> se nourrissent d'arbres \u00e0 feuilles caduques dans tout le paysage canadien. Lymantria dispar<\/em> ont \u00e9t\u00e9 introduits accidentellement en Am\u00e9rique du Nord en 1869, au Massachusetts, aux \u00c9tats-Unis. Il s'est ensuite r\u00e9pandu dans d'autres r\u00e9gions des \u00c9tats-Unis et dans l'est du Canada, avec des populations reproductrices maintenant \u00e9tablies en Ontario, au Qu\u00e9bec, au Nouveau-Brunswick et en Nouvelle-\u00c9cosse. Si elle n'est pas trait\u00e9e, Lymantria dispar<\/em> La d\u00e9foliation entra\u00eene une perte de croissance importante et affaiblit la r\u00e9sistance de l'arbre \u00e0 d'autres insectes, maladies ou autres facteurs de stress - notamment la s\u00e9cheresse. La difficult\u00e9 de contr\u00f4ler cette esp\u00e8ce avec les mesures de lutte actuelles est mise en \u00e9vidence lorsque les esp\u00e8ces \u00e0 risque habitent le m\u00eame environnement. \u00c0 l'automne 2021, une demande d'homologation d'utilisation d'urgence de BoVir a \u00e9t\u00e9 soumise pour une utilisation dans la province de l'Ontario, au Canada. Le BoVir est un nouvel outil de contr\u00f4le bas\u00e9 sur le principe de l'utilisation de l'eau. Nucl\u00e9opoly\u00e9drovirus de Lymantria dispar<\/a>. BoVir est un excellent outil \u00e0 utiliser dans les zones o\u00f9 des esp\u00e8ces \u00e0 risque sont pr\u00e9sentes, car la gamme d'h\u00f4tes des baculovirus est limit\u00e9e \u00e0 ses esp\u00e8ces h\u00f4tes, Lymantria dispar<\/em>. <\/p>\n\n\n\n

\n
\"image
Application a\u00e9rienne du BoVir <\/figcaption><\/figure>\n\n\n\n
\"image
Lymantria dispar <\/em>larve infect\u00e9e par le baculovirus<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

En 2021, Lymantria dispar<\/em> ont \u00e9t\u00e9 responsables de la d\u00e9foliation de 586 385 ha de for\u00eats dans les zones urbaines et rurales de l'Ontario. High Park, situ\u00e9 dans la ville de Toronto, en Ontario, est un espace pr\u00e9cieux qui abrite d'importantes esp\u00e8ces de ch\u00eanes, mais qui constitue \u00e9galement une importante destination touristique et un parc urbain dans l'une des plus grandes villes du Canada. En tant que vestige forestier dot\u00e9 d'un \u00e9cosyst\u00e8me unique, High Park fournit \u00e9galement un habitat \u00e0 d'autres esp\u00e8ces peu communes, rares, menac\u00e9es ou en voie de disparition, notamment des l\u00e9pidopt\u00e8res. Ce m\u00e9lange de l\u00e9pidopt\u00e8res comprend six esp\u00e8ces de papillons de jour et 15 esp\u00e8ces de papillons de nuit, dont beaucoup ont un statut de conservation de haut niveau. Il comprend \u00e9galement la pr\u00e9sence possible de l'aile sombre tachet\u00e9e, une esp\u00e8ce en voie de disparition (Erynnis martialis<\/em>). C'est dans ce cr\u00e9neau que l'application de Bovir s'adapte parfaitement pour r\u00e9duire Lymantria dispar<\/em> afin de prot\u00e9ger la sant\u00e9 des arbres et de r\u00e9duire la possibilit\u00e9 d'un accident. Lymantria dispar<\/em> tout en n'ayant aucun impact sur les l\u00e9pidopt\u00e8res non cibl\u00e9s qui peuvent habiter le m\u00eame \u00e9cosyst\u00e8me.<\/p>\n\n\n\n

Le site Lymantria dispar<\/em> L'infestation a \u00e9t\u00e9 particuli\u00e8rement s\u00e9v\u00e8re \u00e0 High Park pendant l'\u00e9t\u00e9 2021 et la plupart des ch\u00eanes du parc ont \u00e9t\u00e9 compl\u00e8tement (100%) d\u00e9foli\u00e9s par les chenilles. Au printemps et \u00e0 l'\u00e9t\u00e9 2022, apr\u00e8s le traitement au BoVir, la canop\u00e9e des arbres a prosp\u00e9r\u00e9 toute la saison. Le parc a pu recommencer \u00e0 fournir un habitat aux esp\u00e8ces en p\u00e9ril. Le BoVir a \u00e9t\u00e9 l'un des outils de lutte int\u00e9gr\u00e9e contre les ravageurs utilis\u00e9s par la ville de Toronto pour prot\u00e9ger les arbres de High Park pendant une p\u00e9riode prolong\u00e9e de gel. Lymantria dispar<\/em> l'\u00e9closion. <\/p>","protected":false},"excerpt":{"rendered":"

Depuis 2009, Andermatt Canada aide les gestionnaires forestiers canadiens et am\u00e9ricains \u00e0 r\u00e9guler les populations de Lymantria dispar. Lymantria dispar est un important ravageur forestier dont l'aire de r\u00e9partition g\u00e9ographique est exceptionnellement large, depuis son territoire d'origine en Europe jusqu'au nord de l'Am\u00e9rique du Nord. R\u00e9cemment, Andermatt Canada a contribu\u00e9 \u00e0 limiter l'\u00e9pid\u00e9mie de Lymantria dispar dans la ville de Toronto tout en aidant la ville \u00e0 surmonter les pr\u00e9occupations du public concernant les esp\u00e8ces en p\u00e9ril dans la zone d'application.<\/p>","protected":false},"author":5,"featured_media":4484,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_searchwp_excluded":"","_uag_custom_page_level_css":"","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":"","background-image":"","background-repeat":"repeat","background-position":"center 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Piven","author_link":"https:\/\/www.andermatt.com\/fr\/author\/alina\/"},"uagb_comment_info":0,"uagb_excerpt":"Andermatt Canada has been helping Canadian and American forestry managers regulate Lymantria dispar populations since 2009. Lymantria dispar is an important forestry pest with an exceptionally broad geographical range, from its native territory in Europe to Northern North America. Recently, Andermatt Canada helped to limit the Lymantria dispar outbreak in the city of Toronto while\u2026","_links":{"self":[{"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/posts\/4470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/comments?post=4470"}],"version-history":[{"count":7,"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/posts\/4470\/revisions"}],"predecessor-version":[{"id":6185,"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/posts\/4470\/revisions\/6185"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/media\/4484"}],"wp:attachment":[{"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/media?parent=4470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/categories?post=4470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.andermatt.com\/fr\/wp-json\/wp\/v2\/tags?post=4470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}