Rapid response of midgut bacteria in Bactrocera tau (Walker) (Diptera: Tephritidae) to lambda-cyhalothrin- and spinosad-induced stress

文献类型： 外文期刊

第一作者： Ye, Suzhen

作者： Ye, Suzhen;Tian, Zhenya;Gao, Xuyuan;Chen, Hongsong;Yang, Jingfang;Ma, Chao;Zhang, Yan;Zhou, Zhongshi;Tian, Zhenya;Ma, Weihua;Gao, Xuyuan;Chen, Hongsong;Yang, Jingfang;Ma, Chao;Zhang, Yan;Zhou, Zhongshi;Gao, Xuyuan;Chen, Hongsong;Ma, Weihua

作者机构：

关键词： Bactrocera tau; Lambda-cyhalothrin; Spinosad; Midgut; Microbial diversity

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.8； 五年影响因子：6.9 ）

ISSN： 0147-6513

年卷期： 2023 年 265 卷

页码：

收录情况： SCI

摘要： In recent decades, the increasingly widespread application of chemical pesticides has exacerbated the emergence of insecticide resistance among insect pests. In this study, we examined the rapid response of bacteria in the midgut of the fruit fly Bactrocera tau (Walker) (Diptera: Tephritidae) to stress induced by the insecticides lambda-cyhalothrin and spinosad by analyzing the bacterial community structure and diversity in the midguts of 4-day -old B. tau. The results revealed that 4-day-old B. tau females were more resistant to lambda-cyhalothrin and spinosad than their 4-day-old male counterparts. Alpha-and beta-diversity analyses revealed no significant differences between male and female B. tau with respect to the diversity and richness of gut bacteria in response to the same treatments. In response to treatment with lambda-cyhalothrin and spinosad at lethal concentration 50 (LC50), we detected significant changes in the structure and diversity of the bacterial community in the midguts of both male and female B. tau. Particularly among the dominant bacterial genera, there were decreases in the relative abundances of Citrobacter, Enterobacter, Klebsiella, and Pectobacterium. Increases were observed in the relative abundances of Dysgonomonas, Erwinia, and Providencia. Our findings provide a theoretical basis for gaining a better understanding of the relationships between midgut bacteria and the insecticide resistance of B. tau.

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