Behavioral Mechanism for the Starved Encarsia sophia (Girault and Dodd) (Hymenoptera: Aphelinidae) Parasitizing and Feeding on more Whitefly Nymphs

文献类型： 外文期刊

第一作者： Liu, Lin-Zhou

作者： Liu, Lin-Zhou;Lv, Bing;Zang, Lian-Sheng;Ruan, Chang-Chun;Zhang, Fan;Gao, Yue-Bo

作者机构：

关键词： Encarsia sophia;Host feeding;Food deprivation;Biological control

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2015 年 17 卷 2 期

页码：

收录情况： SCI

摘要： Some host-feeding whitefly parasitoids by starving for a certain period of time before release may kill more hosts. Here, we compared the host-feeding and parasitic behaviors on third-instar nymphs of Bemisia tabaci (Gennadius) between starved and un-starved (newly-emerged) Encarsia sophia (Girault and Dodd). The results showed that the time from release to finding the first host used for host feeding and parasitism by un-starved females was 5.7 and 2.8 times longer than by starved females, respectively. The un-starved females had a significantly longer handling time (1151.9 s) to kill one host through parasitism than starved females (271.9 s). The results suggest that starved parasitoids are more effective biological control agents: they locate and kill their hosts more quickly than do un-starved parasitoids, and kill more hosts using the saved time. (C) 2015 Friends Science Publishers

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