贵州省2017-2021年蚊类监测分析  

Analysis of mosquito surveillance in Guizhou province,China,2017-2021

作　　者：张燕[1] 周敬祝[2] 王丹[2] 师伟芳 向昱龙 胡勇[1] 梁文琴 ZHANG Yan;ZHOU Jing-zhu;WANG Dan;SHI Wei-fang;XIANG Yu-long;HU Yong;LIANG Wen-qin(School of Public Health,Key Laboratory of Environmental Pollution Monitoring and Disease Control,Ministry of Education,Guizhou Medical University,Guiyang,Guizhou 550025,China;Department of Vector Surveillance,Experimental Center,Guizhou Center for Disease Control and Prevention,Guiyang,Guizhou 550004,China)

机构地区：[1]贵州医科大学公共卫生与健康学院,环境污染与疾病监控教育部重点实验室,贵州贵阳550025 [2]贵州省疾病预防控制中心实验中心病媒生物监测科,贵州贵阳550004

出　　处：《中国媒介生物学及控制杂志》2023年第3期356-361,共6页Chinese Journal of Vector Biology and Control

基　　金：贵州省科技计划项目(黔科合支撑〔2022〕一般178,黔科合支撑〔2020〕4Y169号);贵州省传染病预防与控制人才基地科研团队(RCJD2107)。

摘　　要：目的了解贵州省人居及周边环境蚊虫的种类构成、种群密度和季节消长规律,为蚊媒传染病的风险评估和病媒生物的科学有效防控提供依据。方法收集整理2017-2021年贵州省78个病媒生物省级监测点的蚊虫数据,分析蚊虫的种类构成,比较不同年份、不同地区、不同生境蚊虫密度差异及季节消长规律。利用SPSS 24.0软件对不同生境布雷图指数(BI)和蚊密度进行方差分析,评估风险等级。结果2017-2021年共捕获雌蚊131476只,蚊密度平均为5.82只(/灯·夜),其中致倦库蚊占比最高,达43.34%,其次是中华按蚊,占20.68%;大多数市(州)的优势蚊种均为致倦库蚊,其中致倦库蚊构成比最高的地区为遵义市,共捕获17409只,占捕获总数的61.32%,不同地区蚊虫密度差异有统计学意义(F=5.276,P<0.001);2017-2021年蚊密度最高的生境均为牲畜棚,各生境优势蚊种均为致倦库蚊,不同生境蚊密度差异有统计学意义(F=114.368,P<0.001);灯诱法监测的成蚊密度5月开始逐渐上升,蚊密度高峰出现在每年的6-8月,蚊密度9月开始迅速下降;BI季节消长呈现较明显的双峰分布,分别为6和8月,BI 5月开始迅速上升,9、10月逐渐下降;不同年份BI均>5,风险等级为1级的地区有安顺和贵阳市及黔东南苗族侗族自治州,2019年安顺市和2021年贵阳市BI均>10,风险等级为2级。结论贵州省人居及周边环境中致倦库蚊和中华按蚊为优势蚊种;农村环境蚊密度较高,特别是牲畜棚,它是蚊虫的重要孳生地,要特别加强该类环境蚊虫的防制。总体来看,贵州省的蚊虫活动高峰呈双峰型,分别为6和8月,出现双峰的原因可能与贵州省的独特气候和降雨情况息息相关。因此可在蚊虫繁殖高峰来临之前做好防治工作,降低蚊虫密度以及蚊媒病毒传播的风险。Objective To investigate the species composition,population density,and seasonal fluctuation of mosquitoes in human settlements and surrounding environments in Guizhou province,China,and to provide a basis for risk assessment of mosquito-borne diseases and scientific and effective vector control.Methods Mosquito surveillance data from 78 provincial vector surveillance sites in Guizhou province from 2017 to 2021 were collected to analyze mosquito species composition and compare mosquito population density and seasonal fluctuations in different years,regions,and habitats.SPSS 24.0 software was used to perform analysis of variance on the Breteau index(BI)and density of mosquitoes in different habitats for risk assessment.Results A total of 131476 female mosquitoes were captured from 2017 to 2021,with a density of 5.82 mosquitoes/light·night.Culex pipiens quinquefasciatus accounted for the highest proportion with 43.34%of the total catches,followed by Anopheles sinensis with 20.68%.Cx.pipiens quinquefasciatus was the dominant mosquito species in most cities/prefectures.Zunyi had the highest composition ratio of Cx.pipiens quinquefasciatus with a total of 17409 catches(61.32%).There was a statistical difference in mosquito density in different areas(F=5.276,P<0.001).From 2017 to 2021,the highest densities of mosquitoes were all in livestock sheds,and Cx.pipiens quinquefasciatus was the dominant mosquito species in all habitats.The density of mosquitoes was statistically different in different habitats(F=114.368,P<0.001).Adult mosquito density by light trapping increased gradually from May,peaked during June to August,and decreased rapidly from September.BI showed two obvious peaks in June and August,respectively.The BI began to rise rapidly in May,and gradually declined in September and October.The BI was greater than 5 for each year.The areas of level-1 risk included Anshun,Guiyang,and Qiandongnan Miao and Dong Autonomous Prefecture.The BI values in Anshun in 2019 and Guiyang in 2021 were both greater than 10,indica

关 键 词：蚊类 种群密度 季节消长 布雷图指数法 

分 类 号：R384.1[医药卫生—医学寄生虫学]