江浙野桑蚕寄生性天敌调查及群落结构分析

INVESTIGATION ON THE PARASITOIDS OF WILD MULBERRY SILKWORM

野桑蚕是重要的桑树害虫。作者于1985—1990年在江浙主要蚕区,进行野外采集、室内饲养其卵、幼虫、蛹共达43万余个体的寄生性天敌调查。调查中共得6种原寄生灭敌,它们是:野蚕黑卵蜂、野蚕平腹小蜂、野蚕绒茧蜂、广大腿小蜂、野蚕黑瘤姬蜂和家蚕追寄蝇。卵块寄生率0—92.22%,卵粒寄生率0—56.73%,幼虫寄生率0—77.36%,蛹寄生率0—19.57%。各寄生天敌比较,以野蚕绒茧蜂和野蚕黑卵蜂最为重要,其中后者更有应用前景。此外,并对野桑蚕寄生天敌群落结构的多样性、相似性作了分析。

In 1985-1990,large-scale investigation on the natural enemies of wildmulberry silkworm Bombyx mandarina(Moore),one of the most impor-tant pests of mulberry in China,was conducted in main sericulturearea in Jiangsu and Zhejiang Provinces,based on field collection andhost rearing with more than 430 thousands of individuals including eggs,larvae and pupae.Six primary parasitoids,namely,Telenomus theophilae,Anastatus sp.,Apanteles sp.,Brachymeria lasus,Coccygomimus luctuosus,and Exorista sorbillans,were found.The parasitizations of egg masses,eggs,larvae and pupae were 0-92.22%,0-56.73%,0-77.36% and 0-19.57%,respectively.In which,the parasitizations of Apanteles sp.andTelenomus theophilae were mostly high,and the latter possesses morefuture application possibility.In addition,the diversity and similarityof the parasitoid community structure on wild mulberry silkworm wereanalysed.