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Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
Address:Chaoyang District No. 1 Beichen West Road, No. 5 hospital,Beijing City,100101, China
Your Position :Home->Past Journals Catalog->2016年53 No.2

Development of resistance to spinosyns in populations of westernflower thrips in Beijing and Yunnan
Author of the article:WAN Yan-Ran1** HE Bing-Qing2 YUAN Guang-Di2 WEI Guo-Shu1*** WU Qing-Jun2***
Author's Workplace:1. College of Plant Protection, Agricultural University of Hebei, Baoding 071000, China;2. Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Key Words:Frankliniella occidentalis, spinosyns, insecticide resistance, resistance monitoring

      [Objectives]  To clarify the status of insecticide resistance in western flower thrips (WFT) in China and to provide baseline data to improve the control of these pests. [Methods]  The resistance of WFT to several insecticides, including spinosyns, was evaluated in Beijing and Yunnan from 2011 to 2015 using the leaf tube residue method. [Results]  Populations of WFT in parts of Beijing had developed 80- to 150-fold resistance to spinosad compared to a susceptible strain. The resistance ratio to spinetoram was as high as 7 730-fold and the LC50 value to spinetoram had increased by a maximum of 258 times the initial value over the last five years. Resistance to emamectin benzoate and thiamethoxam was moderateand thrips had either low resistance, or were susceptible, to chlorfenapyr and abamectin. Populations of WFT in Kunming, Yunnan Province had developed 305-fold resistance to spinetoram, but were either susceptible, or had low level resistance, to other insecticides. [Conclusion]  Populations of western flower thrips in Beijing and Yunnan have developed high levels of resistance to spinosyns. This trend should be followed closely and the mechanism underlying resistance to spinosyns further investigated.

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