Infection of Rice Plants by Rice Black Streaked Dwarf Virus Improves an Egg Parasitoid, Anagrus nilaparvatae (Hymenoptera: Mymaridae), of Rice Planthoppers

文献类型： 外文期刊

第一作者： Xu, Hongxing

作者： Xu, Hongxing;Zheng, Xusong;Yang, Yajun;Tian, Junce;Lu, Zhongxian;He, Xiaochan

作者机构：

关键词： rice black streaked dwarf virus;Anagrus nilaparvatae;host selectivity;parasitism capacity;ecological fitness

期刊名称：ENVIRONMENTAL ENTOMOLOGY （ 影响因子：2.377； 五年影响因子：2.298 ）

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收录情况： SCI

摘要： The effects of rice plants infected by rice black streaked dwarf virus (RBSDV) on the host preference, duration of immature stages, sex ratio, and adult longevity and parasitic capacity of an egg parasitoid, Anagrus nilaparvatae Pang et Wang, of rice brown planthopper, Nilaparvata lugens Stal, were evaluated. Tests of response to plant volatiles using an olfactometer showed that A. nilaparvatae preferred rice plants harboring rice brown planthopper eggs over plants free of rice brown planthopper eggs. However, both the response to plant volatiles and the host selectivity test showed no significant differences in host preference between RBSDV-infected plants and healthy plants when both contained rice brown planthopper eggs. The developmental duration at immature stage of the male A. nilaparvatae in rice brown planthopper eggs on RBSDV-infected rice plants was significantly prolonged, and the parasitic capacity of rice brown planthopper eggs was significantly increased in comparison with the A. nilaparvatae parasite in rice brown planthopper eggs on healthy rice plants. There were no significant differences between RBSDV-infected rice plants and healthy rice plants in other ecological fitness parameters, including the developmental duration of female adults, female percentage, and adult longevity of A. nilaparvatae.

分类号： Q96

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