Abstract: Objective To understand the seasonal dynamics of Aedes albopictus and their insecticide resistance distribution in Jiangmen city and to provide the scientific basis for the prevention and control of mosquitoes. Methods Breteau index (BI) method and Mosquito oviposition positive index (MOI) method were utilized to conduct monthly monitoring in 7 counties of Jiangmen city during 2015-2017. Larvae resistance was tested by dipping method recommended by WHO. The median lethal concentration (LC₅₀) was obtained by using SPSS 19.0 software for biometric data statistics, and the resistance distribution map was made by using Epi Info 3.5.3 software according to the resistance level. Results Mosquito density showed one peak in most counties in 2015-2017, and the peaks were May and from July to September. The highest BIs were 14.23, 12.85, 7.36 and the highest MOIs were 11.39, 20.41, 14.86. The average values of BI and MOI showed that the density of mosquito in most counties were low. Seven population of larval mosquitoes were susceptible to permethrin and showed sensitivity and low resistance to beta-cypermethrin, propoxur, deltamethrin, temephos, and Es-Bioallethrin. Xinhui district population developed medium resistance to dimefluthrin and the others had low resistance. Conclusion It is necessary to strengthen density and resistance surveillance of Ae. albopictus, and choose insecticides reasonably to delay the development of insecticide resistance and control mosquito-borne diseases effectively.

Key words: Aedes albopictus, Breteau index, Mosquito oviposition positive index, Seasonality, Insecticide resistance

摘要： 目的 了解2015-2017年广东省江门地区白纹伊蚊季节消长规律及抗药性水平，为白纹伊蚊防制提供科学依据。方法 采用布雷图指数（BI）法和诱蚊诱卵器法，于2015-2017年在江门市的7个市（区）的城市居民区逐月开展白纹伊蚊种群密度监测；采用WHO推荐的幼虫浸渍法开展幼虫抗药性测定。用SPSS 19.0软件进行生物测定数据统计，获得半数致死浓度（LC₅₀），根据抗性水平判定标准用Epi Info 3.5.3软件做抗性分布图。结果 江门地区白纹伊蚊BI和诱蚊诱卵器指数（MOI）季节消长多数呈单峰趋势，5、7-9月为密度高峰期。2015-2017年BI最高分别为14.23、12.85和7.36；MOI最高分别为11.39、20.41和14.86。7个市（区）平均BI、MOI显示，大部分地区白纹伊蚊密度呈低密度状态。7个白纹伊蚊幼蚊种群对氯菊酯均呈敏感，对高效氯氰菊酯、残杀威、溴氰菊酯、双硫磷、Es-生物烯丙菊酯呈低抗或敏感。新会区种群对四氟甲醚菊酯呈现中抗，其他均为低抗。结论 应加强对白纹伊蚊密度及抗药性监测，合理使用杀虫剂，延缓抗性产生，并将监测结果与蚊媒传染病进行关联分析，为城市蚊虫控制及蚊媒病的预防提供指导意见。

关键词: 白纹伊蚊, 布雷图指数, 诱蚊诱卵器指数, 季节消长, 抗药性