Hypera postica(Gyllenhal), Alfalfa Weevil / Charançon postiche de la luzerne (Coleoptera: Curculionidae)

Le résumé fourni par la source

Hypera postica , the alfalfa weevil, was introduced to North America at least three times, giving rise to three strains of H. postica on the continent. All alfalfa weevil specimens recently collected on the Canadian prairies belonged to the western strain. The larvae and adults of alfalfa weevil are important defoliators and have economic impacts on alfalfa hay and seed production. Alfalfa weevil has long been the target of biological control in the United States and Canada. Two parasitoids released in the United States and eastern Canada, Bathyplectes curculionis and Oomyzus incertus , are now present in western Canada but their impact on alfalfa weevils varies widely. The chapter reviews the distribution, establishment and impact of biological control agents of alfalfa weevil in Canada, with a focus on work in western Canada, and highlights future directions required for additional research.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.