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2002•Zhongguo meijie shengwuxue ji kongzhi zazhiRequires access

Active Test of Resistance and Esterase of Hangzhou Culex pipiens pallens

K. Q. Yu, Xiaoping Ni, Qiao Chuan-ling, Xuan Li

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Abstract

Objective: To investigate the situation of the Hangzhou Culex pipiens pallens resistance,to differentiate esterase by using starch gel electrophoresis esterase flocculus and having biological test at the same time. Method:Dipping for instars and non-differential starch gel electrophoresis for imago. Results:The cypermethrin resistance was the highest one in six pesticides and it was 12.3 times of the sensitive strains.Dichlorphos,high-efficiency cypermethrin,deltamethrin,Propoxur,BPMC were respectively 5.61, 5.09, 4.65, 4.43, 3.98 times. The non-differential esterase Est β1 1 and Est α 2/β2 had also come into being. Conclusion:Hangzhou Culex pipiens pallens produced middle resistance to cypermethrin and low resistance to other five insecticides.Some active esterases which have higher resistance to Organic phosphorus are in existence.

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What this paper is about

Objective: To investigate the situation of the Hangzhou Culex pipiens pallens resistance,to differentiate esterase by using starch gel electrophoresis esterase flocculus and having biological test at the same time. Method:Dipping for instars and non-differential starch gel electrophoresis for imago. Results:The cypermethrin resistance was the highest one in six pesticides and it was 12.3 times of the sensitive strains.Dichlorphos,high-efficiency cypermethrin,deltamethrin,Propoxur,BPMC were respectively 5.61, 5.09, 4.65, 4.43, 3.98 times. The non-differential esterase Est β1 1 and Est α 2/β2 had also come into being. Conclusion:Hangzhou Culex pipiens pallens produced middle resistance to cypermethrin and low resistance to other five insecticides.Some active esterases which have higher resistance to Organic phosphorus are in existence.

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Available abstract

Objective: To investigate the situation of the Hangzhou Culex pipiens pallens resistance,to differentiate esterase by using starch gel electrophoresis esterase flocculus and having biological test at the same time. Method:Dipping for instars and non-differential starch gel electrophoresis for imago. Results:The cypermethrin resistance was the highest one in six pesticides and it was 12.3 times of the sensitive strains.Dichlorphos,high-efficiency cypermethrin,deltamethrin,Propoxur,BPMC were respectively 5.61, 5.09, 4.65, 4.43, 3.98 times. The non-differential esterase Est β1 1 and Est α 2/β2 had also come into being. Conclusion:Hangzhou Culex pipiens pallens produced middle resistance to cypermethrin and low resistance to other five insecticides.Some active esterases which have higher resistance to Organic phosphorus are in existence.

Key concepts: Esterase, Propoxur, Cypermethrin, Deltamethrin, Biology, Culex pipiens, Veterinary medicine, Toxicology

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