2013-2017年成都市蚊虫密度监测分析

目的 掌握成都市蚊虫种群分布及季节消长规律,为防控蚊媒传染性疾病提供参考.方法 采用诱蚊灯法,于每年4-11月在成都市城区和农村开展蚊虫密度监测.结果 共捕获成蚊337 233只,平均蚊密度为3.52只/(灯· h),其中致倦库蚊、三带喙库蚊为优势种,分别占捕蚊总数的50.43％、35.85％.2013-2017年蚊密...

Surveillance of mosquitoes in Chengdu City from 2013 to 2017

Objective To study the population distribution of mosquitoes and their seasonality in Chengdu and provide reference for controlling mosquito borne diseases.Methods Light traps were used for mosquito density surveillance in the urban areas and villages in Chengdu from April to November in the years from 2013 to 2017.Results A total of 337233 mosquitoes were collected,and the average mosquito density was 3.52 mosquitoes/(lamp·h).Culex quinquefasciatus and Culex tritaeniorhynchus were the dominant species,respectively accounting for 50.43%and 35.85%.The mosquito density decreased year by year from 2013 to 2017,the highest average mosquito density was 3.97 mosquitoes/(lamp·h)in 2013,the lowest average mosquito density was 2.82 mosquitoes/(lamp·h)in 2017.The seasonality of mosquitoes was unimodal,and the peak occurred from June to July.The incidence of Japanese encephalitis,which was a mosquito-borne disease,concentrated in July to August.A total of 27 cases and 30 cases were reported during 2013—2017.The highest adult mosquito density was 19.19 mosquitoes/(lamp·h),took place in the livestock shed among different environments.Conclusion The population distribution of mosquitoes and their seasonality in Chengdu were well documented in this study.The density dynamics of mosquitoes were closely correlated with mosquito-borne disease.It is necessary to strengthen the research with regard to the integrated monitoring,early warning,control strategies and measures of mosquitoes and mosquito-borne disease.