Effect of Sublethal Doses of Imidacloprid on the Biological Performance of Aphid Endoparasitoid (Hymenoptera: Aphidiidae) and Influence on Its Related Gene Expression.

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ID: 14257
2018
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Abstract
The integrated pest management (IPM) strategy was developed and used in combination with pesticides and beneficial biological control agents. To further develop IPM efficiency, it is important to evaluate the side effects of pesticides on biological control agents. is one of the most important aphid natural enemies and has been successfully used to control and other aphid species. Imidacloprid (IMD) is a popular pesticide used worldwide and is highly toxic to non-target arthropods. Here, we investigated the short-term sublethal toxicity of IMD in and its impact on the biological performance and gene expression of this parasitoid. We found that sublethal IMD doses had a significant negative effect on the life history traits of female , including shortening the lifespan and lowering parasitic capacity. Moreover, exposure to sublethal IMD also adversely affected the response of to aphid-infested plant volatiles. Based on the transcriptome analysis, we found that the exposure to sublethal IMD doses significantly affected expression of genes involved in the central nervous system, energy metabolism, olfactory, and detoxification system of . RT-qPCR also revealed that short term expose to sublethal IMD doses significantly induced the gene expression of genes related to the central nervous system (, and ), olfactory system ( and ), and detoxification system (, and ), while it suppressed the expression of genes involved in the central nervous system ( and ), olfactory system (, and ), and detoxification system (). Furthermore, exposure to sublethal doses of IMD also significantly increased the activities of CarEs and POD, whereas we observed no influence on the activities of CAT, GST, and SOD. Our results indicate that sublethal IMD doses might adversely affect the biological performance of by altering gene expression related to the function of olfactory, nervous, energy metabolism, and detoxification systems. Thus, how the use of pesticides directly affect insect population should be considered when used in conjunction with natural pest parasitoids in IPM strategies.
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kang2018effectfrontiers Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Kang, Zhi-Wei;Liu, Fang-Hua;Pang, Rui-Ping;Tian, Hong-Gang;Liu, Tong-Xian;
Journal Frontiers in physiology
Year 2018
DOI
10.3389/fphys.2018.01729
URL
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