Resistance of Culex pipiens pallens to four kinds of insecticides

Objective To investigate the resistance of Culex pipiens pollens to four common insecticides and provide evidence for scientific application of insecticides. Methods Selecting 4 insecticides to test the larvae resistance of Culex pipiens pallens according to the method provided by WHO, and compare with the test result of susceptible strain cultured in laboratory. Results The strains from Nanjing and Kunshan had developed different resistance to tested insecticides except that the Kunshan race was much susceptive to deltamethrin(R/S=1.29). Conclusion It was necessary to apply integrated control and use insecticides scientifically in controlling mosquitoes.