Resistance of Culex quinquefasciatus to commonly used insecticides in Wuhan in 2022
WU Liqun
ZHOU Liangcai
WANG Juan
LI Meiling
CHEN Xiaomin
Abstract：Objective To understand the resistance status of Culex quinquefasciatus to commonly used insecticides in Wuhan,and to provide basis for formulating prevention and control measures.Methods Dipping method was performed for the insecticide resistance test of Culex quinquefasciatus larvae,while tube contact method with diagnostic doses was for the insecticide resistance test of Culex quinquefasciatus adults.Results Culex quinquefasciatus larvae developed resistance to deltamethrin and beta-cypermethrin,with resistance ratios of 7.38 and 15.03 respectively,but maintained sensitivity to lambda-cyhalothrin,temephos,malathion,propoxur and Bacillus thuringiensis isralensis(Bti),with resistance rates of 1.92,1.62,1.83,2.15 and 1.07 respectively.Culex quinquefasciatus adults were resistant to deltamethrin and propoxur,probable resistant to permethrin and beta-cypermethrin,and susceptible to malathion.Conclusion Culex quinquefasciatus in Wuhan developed varying level of resistance to different pyrethroid insecticides.It is recommended to strengthen the resistance surveillance of Culex quinquefasciatus to commonly used insecticides.
Keywords：Culex quinquefasciatusresistanceinsecticides
Publication Date：2023-10-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 391-394 )