Contribution of a parasitoid species to multiplication and transmission of a multiple nucleopolyhedrovirus in caterpillars

文献类型： 外文期刊

第一作者： Zhang, Hao

作者： Zhang, Hao;Jiang, Jie-Xian;Chen, Yi-Juan;Wang, Jin-Yan;Ji, Xiang-Yun;Wan, Nian-Feng

作者机构：

关键词： Microplitis pallidipes; Nucleopolyhedrovirus; Spodoptera exigua; virus multiplication; virus transmission

期刊名称：JOURNAL OF APPLIED ENTOMOLOGY （ 影响因子：2.603； 五年影响因子：2.562 ）

ISSN： 0931-2048

年卷期：

页码：

收录情况： SCI

摘要： Spodoptera exigua multiple nucleopolyhedrovirus (SeMNPV) and Microplitis pallidipes are both used as biocontrol agents of the beet armyworm (Spodoptera exigua). However, it has not been determined how beet armyworms respond when these agents interact. Here, we studied the effects of M. pallidipes on virus multiplication and transmission using quantitative detection of SeMNPV. Our results indicated that parasitoids promoted virus multiplication in caterpillars (10(5) copies per caterpillar) and that it was more advantageous when the M. pallidipes oviposited one day prior to infection with NPV. Interestingly, SeMNPV was transmitted by M. pallidipes in four ways. Transmission efficiency was higher for parasitoids whose body surfaces were contaminated with NPV, and for parasitoids ovipositing on NPV-infected caterpillars, than for those emerging from NPV-infected caterpillars, or feeding on mixtures of honey, water and NPV. Our study reveals that parasitoids do affect the proliferation and transmission of NPV in caterpillars and suggests that M. pallidipes could be used to strengthen the effectiveness of SeMNPV as a biocontrol agent.

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