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Impact of Imidacloprid Resistance on the Demographic Traits and Expressions of Associated Genes in Aphis gossypii Glover

文献类型： 外文期刊

作者： Ullah, Farman 1 ; Xu, Xiao 3 ; Gul, Hina 3 ; Guncan, Ali 4 ; Hafeez, Muhammad 5 ; Gao, Xiwu 3 ; Song, Dunlun 3 ;

作者机构： 1.China Agr Univ, Coll Plant Protect, Dept Plant Biosecur, Beijing 100193, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Surveillance & Management Plant Quarantin, Beijing 100193, Peoples R China

3.China Agr Univ, Coll Plant Protect, Dept Entomol, Beijing 100193, Peoples R China

4.Ordu Univ, Fac Agr, Dept Plant Protect, TR-52200 Ordu, Turkey

5.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China

关键词： melon aphid; chemical application; life table; biological traits; trade-off; gene expression; insecticide resistance; ecotoxicology

期刊名称：TOXICS （ 影响因子：4.472； 五年影响因子：5.144 ）

ISSN：

年卷期： 2022 年 10 卷 11 期

页码：

收录情况： SCI

摘要： Imidacloprid is one of the most widely used neonicotinoid insecticides to control sapsucking insect pests, including Aphis gossypii. The intensive application of chemical insecticides to A. gossypii led to the development of resistance against several insecticides, including imidacloprid. Therefore, it is crucial to understand the association between imidacloprid resistance and the fitness of A. gossypii to limit the spread of the resistant population under field contexts. In this study, we used the age-stage, two-sex life table method to comprehensively investigate the fitness of imidacloprid resistant (ImR) and susceptible strains (SS) of melon aphids. Results showed that ImR aphids have prolonged developmental stages and decreased longevity, fecundity, and reproductive days. The key demographic parameters (r, lambda, and R-0) were significantly reduced in ImR strain compared to SS aphids. Additionally, the molecular mechanism for fitness costs was investigated by comparing the expression profile of juvenile hormone-binding protein (JHBP), juvenile hormone epoxide hydrolase (JHEH), juvenile hormone acid 0-methyltransferase (JHAMT), Vitellogenin (Vg), ecdysone receptor (EcR), and ultraspiracle protein (LISP) supposed to be associated with development and reproduction in insects. The results of RT-qPCR showed that EcR, JHBP, JHAMT, JHEH, and Vg genes were downregulated, while USP was statistically the same in ImR A. gossypii compared to the SS strain. Together, these results provide in-depth information about the occurrence and magnitude of fitness costs against imidacloprid resistance that could help manage the evolution and spread of A. gossypii resistance in field populations.

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