Notes on Important Natural Enemies of Fall Webworm Larva from Michigan,USA
[Objective]The fall webworm,Hyphantria cunea(Drury),which is native in North America,is one of the important invasive pests in China,which has had a great impact on agricultural and forestry production,urban ecological environment and life of residents,but in North America,the fall webworm is a common pest that causes limited damage.Based on classic biological control theory,to explore the possibility of using natural enemies from the original area to control the fall webworm,a survey was carried out from Lansing,Michigan,USA in 2024.[Method]Nets of fall webworm were collected from the sampling sites and brought them back to the laboratory for rearing.The species,quantities,and biological characteristics of natural enemies appearing in the net were recorded every day.[Result]Th results show that Elachertus cidariae Ashmead,Meteorus hyphantriae Riley,and Cotesia hyphantriae(Riley)are the three most important larval parasitoids of fall webworm in this area,among which E.cidariae is a gregarious koinobiont ectoparasitoid,and the other two are solitary koinobiont endoparasitoids.Podisus placidus Uhler,Acholla multispinosa(DeGeer),and Zelus luridus Stål are important predators of fall webworm larvae in this region.The predation effect of P.placidus is most significant.[Conclusion]According to the survey results,E.cidariae,M.hyphantriae,and C.hyphantriae can be used as candidates for introduction.
Hyphantria cuneaoriginal natural enemieslarval parasitoidspredatorsclassical biological control
万方数据
维普
