中国媒介生物学及控制杂志

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山东省东明县流行性乙型脑炎传播媒介蚊虫的监测

景晓1;王海岩1;刘尧1;马敬仓2;王书德3;王环宇4   

  1. 1山东省疾病预防控制中心病媒生物防制所;2菏泽市疾病预防控制中心;3东明县疾病预防控制中心;4中国疾病预防控制中心
  • 出版日期:2007-04-20 发布日期:2007-04-20

The survey of mosquito vectors of epidemic encephalitis B in Dongming county,Shandong

JING Xiao*; WANG Hai-yan; LIU Yao; MA Jing-cang; WANG Shu-de; WANG Huan-yu   

  1. Center for Diseases Control and Prevention of Shandong, Jinan 250014, China
  • Online:2007-04-20 Published:2007-04-20

摘要: 目的 了解东明县蚊虫的种类及其生态习性,调查当地连续突发流行性乙型脑炎(乙脑)病例可能的传播媒介蚊虫种类,为进一步防制乙脑提供依据;比较4种常用的蚊虫监测方法。方法 用人帐法、网捕法、灯诱法、人工小时法在城区、稻田、畜禽舍、住户4种不同生境捕获蚊虫,分类计数,放入液氮罐中带回实验室以备病毒分离。记录当地温度、湿度、风速等环境气候因素。结果 用4种方法在稻田、城区、畜禽舍、住户4种生境中共捕获成蚊5属7种5116只,三带喙库蚊、淡色库蚊为优势蚊种,分别占捕获蚊虫总数的79.1%和17.8%,其他蚊种占3.1%。从不同生境捕获的蚊虫数量来看,以畜禽舍数量最多,占捕蚊总数的57.7%,稻田和城区次之,分别占18.9%和13.4%,住户最少,仅占9.9%。从蚊虫种类上看,在城区捕获的淡色库蚊居多,占捕获该蚊总数的53.3%,其他生境合计占46.7%。而农村的稻田和畜禽舍外环境以三带喙库蚊数量较多,占捕获该蚊总数的91.2%。以人工小时法捕获蚊虫数量最多,为2943只,占蚊虫总数的57.5%;人帐法次之,占29.0%,灯诱法占8.2%,网捕法捕到的蚊虫数最少,占5.3%。三带喙库蚊和淡色库蚊的叮刺高峰一般是在日落后1-1.5h,持续约30min,淡色库蚊的叮刺高峰略迟20min。结论 三带喙库蚊可能是当地乙脑的主要传播媒介。在进行蚊虫种类和数量监测时,应当以人工小时法和人帐法为主要捕获方法,网捕法和灯诱法为辅助方法。

关键词: 流行性乙型脑炎, 传播媒介, 蚊虫, 监测

Abstract: Objective To investigate the species,distribution,habitat,behavior of mosquitoes to conclude the possible mosquito vectors of epidemic encephalitis B in Dongming county,Shandong;To make a comparison among four ways of surveillance of mosquito vectors.Methods Apply four ways:human baited net trap,catching with a net,light trap and indoor resting collection methods to catch the mosquitoes at the four habitat:urban areas,rice field,livestock and poultry shed,and household,and the environmental factors were recorded at the same time.Results Total 5116 mosquitoes were collected from the four habitat by four ways and belonged to 5 genera 7 species.Culex tritaeniorhynchusandCulex pipiens pallens were dominant in this area,accounting for 79.1% and 17.8%,respectively.Cx.pipiens pallens was dominant in urban areas,accounting for 53.3% and Cx.tritaeniorhynchus was dominant at rural area,accounting for 91.2%.Comparison of mosquito amount of the four habitat:57.7% was in livestock and poultry shed,18.9% in rice field,13.4% in urban areas,and in the household was only 9.9%.Comparison of mosquito amount by four ways:57.5% by indoor resting collection method,29.0% by human baited net trap,8.2% by light trap,and 5.3% by catching with a net.The peak of activity of Cx.tritaeniorhynchus and Cx.pipiens pallens occurred in 1-1.5 hours after sunfall,the latter was later and was in 20 mins.Conclusion The main vector of epidemic encephalitis B was possibly Cx.tritaeniorhynchus in Dongming,Shandong.The recommendable methods on the investigation and surveillance of mosquitoes were indoor resting collection and human baited net trap.Catching with a net and light trap were assistant for collecting rnosquitoes.