广州市城乡不同季节白纹伊蚊密度、带病毒情况及抗药性监测  

Seasonal variation in population density, Dengue virus carriage, and dichlorvos resistance of Aedes albopictus in urban and rural areas of Guangzhou city, China

作　　者：李美青[1] 刘永权[1] 黄燕惠[1] 陈惠芳[1] 姚月娴[1] 刘彬[2] 陈清[1] 俞守义[1] 

机构地区：[1]南方医科大学公共卫生与热带医学学院,广东广州510515 [2]南方医科大学第三附属医院

出　　处：《中国媒介生物学及控制杂志》2013年第2期108-111,共4页Chinese Journal of Vector Biology and Control

基　　金：广州市医药卫生重大科技项目(2006-Zda-001)~~

摘　　要：目的监测广州市城市、农村不同季节白纹伊蚊密度、携带登革热病毒及抗敌敌畏情况,为防控登革热提供科学依据。方法用伊蚊诱捕器法监测广州市城市(白云区)、农村(从化市某村)不同季节白纹伊蚊密度;用RTPCR法检测自然种群携带登革热病毒情况;用幼虫浸渍法检测白纹伊蚊抗敌敌畏情况。结果城市、农村4个季节之间的阳性指数比较差异均有统计学意义;白纹伊蚊的密度高峰均为夏季〔城市、农村,诱蚊诱卵指数(MOI)=40.54、38.14;诱蚊指数(MI)=35.14、37.63;诱卵指数(OI)=36.49、29.90〕,冬季最低,但城市、农村冬季MOI、MI均>0;从捕获的白纹伊蚊体内均未检出登革热病毒;城市白纹伊蚊抗敌敌畏指数,春秋季呈低抗性(指数>2),夏季呈敏感性(<2);农村春秋季高于夏季,但均呈敏感性(<2)。结论广州市城乡白纹伊蚊全年均可监测到,高峰为夏季,未检测到白纹伊蚊体内登革热病毒,敌敌畏对蚊幼虫具有较好的杀灭作用,但应合理选择杀灭时间。Objective To monitor the seasonal changes in the population density, dengue virus carriage, and dichlorvos resistance of Aedes albopictus in the urban and rural areas of Guangzhou city, China and to provide a scientific basis for the prevention and control of dengue fever. Methods The population densities of Ae. albopictus in different seasons were monitored with Aedes traps in urban Guangzhou （Baiyun district） and rural Guangzhou （a village in Conghua city）. RT-PCR was used to detect the dengue virus carried by the field population of Ae. albopictus. The dichlorvos resistance of Ae. albopictus was evaluated by larva dip method. Results In the urban and rural areas of Guangzhou, there were significantly different positive indices in the four seasons. The population density of Ae. albopictus reached the peak level in summer [for urban and rural areas, mosquito and oviposition positive index （MOI）：40.54 and 38.14; mosquito-trap positive index （MI）：35.14 and 37.63; oviposition index （OI） ：36.49 and 29.90]; the population density was the lowest in winter, hut with MOI and MI above zero. No dengue virus was detected in Ae. albopictus. In the urban area, Ae. albopictus had low resistance to dichlorvos in spring and autumn, with a resistance index （RI） greater than 2, and it was sensitive to dichlorvos in summer, with an RI less than 2. In the rural area, Ae. albopictus had a higher RI to dichlorvos in spring and autumn than in summer, but it was sensitive to dichlorvos in all the three seasons, with an RI less than 2. Conclusion Ae. albopictus can be monitored all year round in the urban and rural areas of Guangzhou, and its population density is the highest in summer. Dengue virus is not detected in Ae. albopictus. Dichlorvos has a good performance in killing mosquito larvae, hut it should be applied at the appropriate time.

关 键 词：登革热 白纹伊蚊 不同季节 监测 抗药性 

分 类 号：R384.1[医药卫生—医学寄生虫学] R373.33[医药卫生—基础医学]