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目的初步了解佛山市禅城区白纹伊蚊对常用杀虫剂的抗药性水平,指导全区科学选择和合理使用灭蚊药物,为控制登革热疫情提供依据。方法选择5种常用的致死类杀虫剂和2种击倒类杀虫剂,采用幼虫浸渍法对佛山市禅城区白纹伊蚊幼虫进行抗药性测定。结果佛山市禅城区白纹伊蚊对氯菊酯﹑残杀威﹑溴氰菊酯﹑Es-生物烯丙菊酯﹑四氟甲醚菊酯抗药性指数分别为3.71、4.26、9.56、9.52及4.62,属低度抗药性;对双硫磷﹑高效氯氰菊酯抗药性指数分别为14.80、12.87,属中度抗药性。结论在登革热媒介防治中,应科学合理使用杀虫剂,预防或延缓媒介伊蚊的抗药性产生。
Objective To understand the resistance level of Aedes albopictus to commonly used insecticides in Chancheng District of Foshan City and to guide the scientific selection and rational use of mosquito control drugs in the whole area to provide the basis for controlling the epidemic of Dengue Fever. Methods Five kinds of commonly used lethal insecticides and two knockdown insecticides were selected. The larvae dipping method was used to determine the resistance of Ae. Albopictus larvae in Chancheng District, Foshan City. Results The resistance indexes of Aedes albopictus to fenvalin, propoxur, deltamethrin, Esthiazuron and permethrin in Chancheng District of Foshan were 3.71, 4.26, 9.56 and 9.52 and 4.62, is a low resistance; resistance index of diphtheria, alpha-cypermethrin respectively 14.80,12.87, is a moderate resistance. Conclusion In the prevention and treatment of dengue fever, insecticides should be used scientifically and rationally to prevent or delay the emergence of resistance of vector Aedes mosquitoes.