Field resistance to spinosad in western flower thrips Frankliniella occidentalis(Thysanoptera:Thripidae)  

作　　者：LI Dong-gang SHANG Xiao-yong Stuart Reitz Ralf Nauen LEI Zhong-ren Si Hyeock Lee GAO Yu-lin 

机构地区：[1]State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences [2]Institute of Plant Protection,Dezhou Academy of Agricultural Sciences [3]Malheur County Extension,Oregon State University [4]Bayer Crop Science,RD-SMR,Pest Control Biology [5]Department of Agricultural Biotechnology,Seoul National University

出　　处：《Journal of Integrative Agriculture》2016年第12期2803-2808,共6页农业科学学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (31371942);the National Key Research and Development Program,China (2016YFC1200600);the Ministry of Science and Technology,China

摘　　要：The western flower thrips, Frankliniella occidentalis, is one of the most destructive sucking pests of vegetables, fruits and ornamental crops in China. Spinosad is one of the most commonly used insecticides to manage thrips. To assess the incidence of spinosad resistance in F. occidentalis field populations in eastern China, survival rates for 24 different populations were compared with those of a susceptible laboratory strain. All populations showed significantly higher resistance to spinosad compared with the control as determined by comparing median lethal concentrations. Two populations from Shouguang and Liaocheng in Shandong Province were classified as having moderate and high levels of resistance to spinosad with a mean resistance ratio of 17.0 and 89.2, respectively. Our research indicates a widespread reduction in spinosad efficacy for controlling F. occidentalis field populations, and that resistance management strategies should be implemented as soon as practicable, to reduce the potential of progressive resistance development and loss of efficacy.The western flower thrips, Frankliniella occidentalis, is one of the most destructive sucking pests of vegetables, fruits and ornamental crops in China. Spinosad is one of the most commonly used insecticides to manage thrips. To assess the incidence of spinosad resistance in F. occidentalis field populations in eastern China, survival rates for 24 different populations were compared with those of a susceptible laboratory strain. All populations showed significantly higher resistance to spinosad compared with the control as determined by comparing median lethal concentrations. Two populations from Shouguang and Liaocheng in Shandong Province were classified as having moderate and high levels of resistance to spinosad with a mean resistance ratio of 17.0 and 89.2, respectively. Our research indicates a widespread reduction in spinosad efficacy for controlling F. occidentalis field populations, and that resistance management strategies should be implemented as soon as practicable, to reduce the potential of progressive resistance development and loss of efficacy.

关 键 词：insecticide resistance SPINOSAD BIOASSAY Frankliniella occidentalis 

分 类 号：S433[农业科学—农业昆虫与害虫防治]