文献类型： 外文期刊
作者： Lu, Hantang 1 ; Fu, Buli 1 ; Tan, Qimei 1 ; Hu, Jinyu 1 ; Yang, Jing 1 ; Wei, Xuegao 1 ; Liang, Jinjin 1 ; Wang, Chao 1 ; Ji, Yao 1 ; Huang, Mingjiao 1 ; Xue, Hu 1 ; Du, He 1 ; Zhang, Rong 1 ; Du, Tianhua 1 ; He, Chao 1 ; Yang, Xin 1 ; Zhang, Youjun 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Dept Plant Protect, State Key Lab Vegetable Biobreeding, Beijing 100081, Peoples R China
2.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Key Lab Integrated Pest Management Trop Crops, Minist Agr & Rural Affairs, Haikou, Peoples R China
3.Hunan Acad Agr Sci, Inst Agr Biotechnol, Changsha, Peoples R China
关键词： Bemisia tabaci; nitenpyram; neonicotinoid resistance; fitness cost; pest control
期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：3.8； 五年影响因子：4.3 ）
ISSN： 1526-498X
年卷期： 2024 年
页码：
收录情况： SCI
摘要： BACKGROUND: Elucidating fitness cost associated with field-evolved insect resistance to insecticide is of particular importance to current sustainable pest control. The global pest whitefly Bemisia tabaci has developed resistance to many members of neonicotinoids, but little is known about whitefly resistance to neonicotinoid nitenpyram and its associated fitness cost. Using insecticide bioassay and life-table approach, this study aims to investigate nitenpyram resistance status in field-collected whitefly populations, and to explore whether such resistance is accompanied by a fitness cost. RESULTS: The bioassay results revealed that 14 of 29 whitefly populations displayed moderate to extremely high resistance to nitenpyram, demonstrating a widespread field-evolved resistance to nitenpyram. This field-evolved resistance in the whitefly has increased gradually over the past 3 years from 2021 to 2023. Further life-table study showed that two resistant whitefly populations exhibited longer developmental time, shorter lifespans of adult, and lower fecundity compared with the most susceptible population. The relative fitness cost of the two resistant populations was calculated as 0.69 and 0.56 by using net productive rate R0, which suggests that nitenpyram resistance comes with fitness cost in the whitefly, especially on reproduction. CONCLUSION: Overall, these results represent field-evolved high resistance to nitenpyram in the whitefly. The existing fitness costs associated with nitenpyram resistance are helpful to propose a suitable strategy for sustainable control of whiteflies by rotation or mixture of insecticide with different modes of action. (c) 2024 Society of Chemical Industry.
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