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丝虫象其他昆虫的寄生线虫一样,可损害甚至杀死其中间宿主,但中间宿主对这些寄生虫有几种防御的方法。丝虫引起中间宿主的病理状态,主要是丝虫的机械损害,也可能是对特别的宿主组织吸取营养而造成一些破坏。丝虫确实可使蚊虫死亡,恶丝虫属的D.tenuis能引起伊蚊高度的死亡率,使Pistey注意到这种线虫有用作生物防制蚊虫的可能性。他的结果指出感染后的第三天,即在微丝蚴进入宿主马氏管时,是对感染D.tenusi的伊蚊致命的时候。
Like other parasitic nematodes, filarworms can damage or even kill their intermediate hosts, but there are several ways in which the host can defend these parasites. The filamentous worms cause the pathological state of the intermediate host, mainly the mechanical damage of filarial worms, and may also cause some damage to the nutrition of special host tissues. Indeed, filarial worms can kill mosquitoes. D. tenuis of the genus filaria causes a high mortality rate of the mosquito, making Pistey aware of the potential of this species to be used as a biological control mosquito. His results indicate that on the third day after infection, when microfilaria enters the host’s canal, it is deadly to Aedes mosquitoes infected with D.tenusi.