The Influence Of Feeding And H.ost Deprivation On Egg L oad And Reproduction Of An Aphid Parasitoid, Aphidius Gifuensis (Hymenoptera: Braconidae)
文献类型: 外文期刊
作者: Wang, Li;Zhang, Chen-Yang;Zhang, Lin-Xi;Liu, Tong-Xian;Pan, Ming-Zhen;Pan, Ming-Zhen
作者机构:
关键词: Mummy production; Longevity; Biological control; Sex allocation; Augmentative release
期刊名称: APPLIED ENTOMOLOGY AND ZOOLOGY
ISSN: 0003-6862
年卷期: 2017 年 52 卷 2.0 期
页码:
收录情况: JCR(2021版)
摘要: With a view to improving the establishment of Aphidius gifuensis Ashmead, a potential natural enemy for suppression of aphids on vegetables, the effects of host deprivation and honey feeding before release on the parasitoid's egg load and reproduction were studied under laboratory conditions. Host deprivation significantly affected mummy production and survival rate of female parasitoids. A. gifuensis produced more mummies when exposed to a short period (1 and 2 days) of host deprivation, but when host deprivation lasted for 3 days, their mummy production sharply decreased. Offspring produced by parasitoids that had been deprived of hosts for 2 days were much heavier than those produced by parasitoids deprived of hosts for 1 and 3 days. However, host deprivation did not affect emergence rate or offspring sex ratio; the emergence rate was always above 80%, and the offspring sex ratio was always female biased irrespective of whether the host-deprivation period was 1, 2, or 3 days. Honey feeding greatly increased egg load, longevity and decelerated oosorption of A. gifuensis when hosts were absent, and significantly increased parasitoid mummy production in late age. We discuss the results in the context of augmentative biological control, with the view to understanding how to increase parasitoid performance after they are released.
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