泰安市白纹伊蚊监测分析

Surveillance on Aedes albopictus in Tai'an City

目的了解辖区内白纹伊蚊密度、分布及季节变化趋势。方法在6—9月的每月中旬对监测点进行现场监测,采用布雷图指数(BI)监测幼虫密度,采用双层叠帐法监测成蚊密度。结果泰安市每月均监测到白纹伊蚊幼虫和成蚊,季节性消长明显,呈单峰型,幼虫密度8月布雷图指数高达62. 79,成蚊帐诱指数高达26. 37只/(顶·h),孳生容器以闲置容器阳性构成比为71. 97%。结论泰安市白纹伊蚊种群密度较高,存在登革热流行的潜在危险,应加强监测和环境整治以及开展健康教育等工作,预防病原输入而引起暴发流行。

Objective To understand the density and seasonal fluctuation of Aedes albopictus in Taian City,and provide scientific evidence for mosquito control.Methods On-site monitoring was conducted in the middle of each month from June to September.Aedes albopictus larva and adults densities were monitored.Results The larvae and adult mosquitoes of Aedes albopictus were detected every month in Tai’an City.The seasonal growth and divergence were unimodal.The larval density index in Breteau in August was as high as 62.79,and the adult net insect trap index was as high as 26.37 insects per net in an hour.The positive ratio of the positive container to the idle container was 71.97%.Conclusion Aedes albopictus population density was high in Taian City,indicating the potential risk of dengue fever epidemic.It is necessary to strengthen the monitoring and environmental regulation and carry out health education work.