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目的了解深圳市德国小蠊和家蝇对常用杀虫剂的抗药性状况,为制定科学合理的防治措施提供依据。方法采用广口瓶药膜接触法测定德国小蠊抗药性,家蝇对常用杀虫剂的抗性测定采用微量点滴法。结果深圳市德国小蠊对高效氯氰菊酯、溴氰菊酯、双硫磷、残杀威和仲丁威均产生了不同程度的抗性,抗性系数依次为25.27、10.65、12.73、4.55和14.59,其中高效氯氰菊酯抗性最为突出(抗性系数>20)。家蝇对高效氯氰菊酯和溴氰菊酯均产生了较高的抗性,抗性系数分别为87.14和285,对仲丁威和残杀威产生的抗性较低,抗性系数分别为3.78和4.10。结论深圳市德国小蠊对高效氯氰菊酯、溴氰菊酯、双硫磷和仲丁威已产生高抗性,对残杀威为低抗性。家蝇对溴氰菊酯杀虫剂有着极高的抗药性,对高效氯氰菊酯也有着很高的抗药性,而对于仲丁威和残杀威的抗性较低。深圳市德国小蠊和家蝇的化学防治须选择适当的杀虫剂,并注意正确使用。
Objective To understand the resistant status of Blattella germanica and housefly to common insecticides in Shenzhen and provide the basis for establishing scientific and rational control measures. Methods The drug resistance of Blattella germanica was determined by the wide-mouth flask membrane contact method. The resistance of the housefly to commonly used insecticides was determined by microdialysis method. Results The results showed that Blattella germanica had different degrees of resistance to beta-cypermethrin, deltamethrin, diphtheria, propoxur and secabel, with resistance coefficients of 25.27, 10.65, 12.73, 4.55 and 14.59, respectively Beta-cypermethrin has the most resistance (resistance coefficient> 20). Musca domestica had higher resistance to beta-cypermethrin and deltamethrin, with resistance coefficients of 87.14 and 285, respectively, and lower resistance to s-butyl and propoxur, with resistance coefficients of 3.78 and 4.10, respectively . Conclusion The German cockroach has high resistance to beta-cypermethrin, deltamethrin, diphtheria and secopipeline, and has low resistance to propoxur. Housefly has a high resistance to deltamethrin insecticide, also has high resistance to beta-cypermethrin, but has lower resistance to sec-butyl and propoxur. The chemical control of Blattella germanica and housefly in Shenzhen Municipality shall select the appropriate pesticide and pay attention to the correct use.