两种杉天牛的生态适应性及对其寄生蜂种群的意义

Ecological Adaptation of Two Species of Longicorns on Chinese Fir and their Parasitic Wasp Populations

通过对四川杉木林区的粗鞘双条杉天牛（ＳｅｍａｎｏｔｕｓｓｉｎｏａｕｓｔｅｒＧｒｅｓｉｔ）和杉棕天牛（ＣａｌｉｄｉｕｍｖｉｌｏｓｕｌｕｍＦａｉｒｍａｉｒｅ）及它们的寄生蜂川硬皮肿腿蜂（ＳｃｌｅｒｏｄｅｒｍａｓｉｃｈｕａｎｅｎｓｉｓＸｉａｏ）和两色刺足茧蜂（ＺｏｍｂｒｕｓｂｉｃｏｌｏｒＥｎｄｅｒｌｅｉｎ）的生态学特性的研究，阐述了两种天牛共存对寄生蜂种群的意义。提出在林间适当保留杉棕天牛这种典型的次期性害虫以滋养寄生蜂，提高对粗鞘双条杉天牛的自然抑制能力的构想。

Through studies of the ecological characters of two longicorn beetles( Semanotus sinoauster Gressitt and Callidium villosulum Fairmaire),and their two parasitic wasp( Scleroderma sichuanensis Xiao and Zmbrus bicolor Enderlein) in Chinese fir forest in Sichuan Province,it has been shown that the coexistance of the two longicorn beetles is useful to the parasitic wasp populations.The method of keeping moderate amount of C.villosulum ,which is a typically secondary pest to nuture the parasitic wasps,can improve the natural suppression capacity to S.sinoauster .