美国白蛾核型多角体病毒传播途径及对寄主的持续作用  

Sustainable Effects for Hyphantria cunea Nuclear Polyhedrosis Virus on the Host Insects and the Diffusion Approach of the Virus

作　　者：段彦丽[1] 曲良建[1] 王玉珠[1] 张永安[1] 陶万强 关玲 杨忠岐[1] 

机构地区：[1]中国林业科学研究院森林生态环境与保护研究所国家林业局森林保护学重点实验室,北京100091 [2]北京市林业保护站,北京100029

出　　处：《林业科学》2009年第6期83-86,共4页Scientia Silvae Sinicae

基　　金：国家自然科学基金(30671688);北京市科委项目(Z0006344040191);国家林业局推广项目(2005-80)

摘　　要：用不同浓度的美国白蛾核型多角体病毒亚致死剂量感染美国白蛾4龄和5龄幼虫,并分别收集不同处理的残余带毒试虫进行室内传代饲养。结果表明:病毒对寄主昆虫不仅具有直接致死作用,而且对蛹重和雌虫产卵量均有明显影响,尤其是对亲代、子一代和子二代寄主昆虫。对病毒传播途径的研究证实HcNPV可通过多种途径传播到寄主种群中。Fourth and fifth instars larvae of fall webworm, Hyphantria cunea, were infected with different concentrations of Hyphantria cunea nucleopolyhedrovirus （HcNPV）. Survivors were collected and reared in laboratory respectively. Mortality of the larvae, average weight of the single pupae, laying eggs for the female and hatch rate of the eggs were observed in parental generation and successive filial generations. The results showed that the virus not only led to death of larvae in parental and filial generation,but also impacted the average weight of the single pupa and laying eggs,especially to the parental and the first filial generation. The virus could weaken the host in filial generations, which could control populations of the host for a long time. Meanwhile, it was proved that HcNPV can spread and diffuse in the host population by many approaches.

关 键 词：持续作用 美国白蛾核型多角体病毒 传播途径 

分 类 号：S763.301[农业科学—森林保护学]