Field-Based Evaluation of Insecticide Effectiveness on Megalurothrips usitatus in Guangdong, China: Implications for Pest Control Strategies
文献类型： 外文期刊
作者： Peng, Zhengke 1 ; Li, Mengni 1 ; Guo, Chaosong 1 ; Zheng, Huixin 3 ; Wu, Mingyue 4 ; Yin, Fei 1 ; Xiao, Yong 1 ; Wang, Huanhuan 1 ; Kong, Xiangyi 4 ; Zalucki, Myron P. 5 ; Xie, Wen 6 ; Li, Zhenyu 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Inst Plant Protect, Minist Agr & Rural Affairs, Key Lab Green Prevent & Control Fruits & Vegetable, Guangzhou 510640, Peoples R China
2.South China Normal Univ, Sch Life Sci, Inst Insect Sci & Technol, Guangdong Prov Key Lab Insect Dev Biol & Appl Tech, Guangzhou 510631, Peoples R China
3.Hunan Univ Humanities Sci & Technol, Key Lab Green Control Crop Pests Hunan Higher Educ, Loudi 417000, Peoples R China
4.Sanya Acad Trop Agr Sci, Sanya 572000, Peoples R China
5.Univ Queensland, Sch Environm, St Lucia, Qld 4072, Australia
6.Chinese Acad Agr Sci, Inst Vegetables & Flowers, State Key Lab Vegetable Biobreeding, Beijing 100081, Peoples R China
7.Chinese Acad Trop Agr Sci, Sanya Res Acad, Sanya 572019, Peoples R China
关键词： cowpea; bean flower thrips; insecticide toxicity monitoring; resistance management; IPM
期刊名称：INSECTS （ 影响因子：2.9； 五年影响因子：3.3 ）
ISSN：
年卷期： 2025 年 16 卷 5 期
页码：
收录情况： SCI
摘要： In southern China, cowpea production is severely threatened by Megalurothrips usitatus due to its fast-evolving resistance to insecticides. The toxicity monitoring of commonly used insecticides against field populations provides key information for the resistance management of pests. In this study, field populations of Megalurothrips usitatus were collected from three locations (QY, YF, MM) in Guangdong, and the sensitivity of these populations against insecticides was determined by using a thrips insecticides bioassay system (TIBS) method. The bioassay results indicated there were sensitivity variances to insecticides between these three field populations. Among these 10 insecticides, spinetoram and spinosad both showed high toxicity against all three field populations. In addition, broflanilide for QY, emamectin benzoate for YF, and emamectin benzoate and cyantraniliprole for MM were suggested as alternate insecticides to alleviate selective pressure from insecticides on field populations. In field experiments, the corrected control efficacy of cyantraniliprole and spinetoram against M. usitatus was over 75% at 7 dpa, which proved to be ideal insecticides for field application. These field-based results provide guidance for chemical control against thrips and can be valuable in proposing appropriate strategies for thrips resistance management.
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