Resistance monitoring of Culex pipiens pallens and Aedes albopictus to nine insecticides in Ji'nan City
Objective To determine the resistance of dominant mosquito species Culex pipiens pallens and Aedes albopictus to commonly used insecticides in Ji' nan,and provide scientific evidences for its effective control.Methods Soaking method was used for measuring the insecticides resistance of Aedes albopictus and Culex pipiens pallens larva.Results Aedes albopictus in Ji' nan developed 34.48,15.71,8.25,2.55,2.21,0.96,0.96,1.80 and 1.13 folds resistance respectively to beta-cypermethrin,permethrin,lambda-cyhalothrin,meperfluthrin,teflumethrin,tiguron,clothianidin,Bt and spinosad,while Culex pipiens pallens developed 22.91,21.57,11.68,16.41,17.28,1.11,1.20,1.14 and 2.70 folds resistance respectively to the insecticides above.Conclusion Mosquitoes in Ji' nan were resistant to pyrethroid insecticides,low resistant or sensitive to organophosphate,neonicotinoid and biological insecticides.In order to control and delay their resistance,insecticides should be applied scientifically.