2012•Chinese Journal of Hygienic Insecticides of EquipmentsRequires access
Resistance of Blattella germanica to three commonly used insecticides in Baoshan district of Shanghai
Yang YingYu
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Abstract
Objective To investigate the resistance of Blattella germanica to deltamethrin,propoxur,beta-cypermethrin in Baoshan district of Shanghai in 2010,and give guidance to use insecticides scientifically.Methods The method of contact with chemical insecticides in jar was used.Results The KT50 of field-collected population of B.germanica to deltamethrin,propoxur,beta-cypermethrin were 48.86,25.39 and 34.79 min respectively.The resistance ratios to deltamethrin,propoxur,beta-cypermethrin were 9.18,1.83 and 6.09 respectively.Conclusion The field-collected population of B.germanica from Baoshan district of Shanghai have developed resistance to deltamethrin and beta-cypermethrin,but they are susceptible to propoxur.