为全面掌握上海中心城区三带喙库蚊Culex tritaeniorhynchus种群动态新变化并开展相应的科学有效的防治，选取城区成蚊较容易出现的公园和绿化区域环境类型（人民广场及人民公园地区），采用24 h连续性成蚊动态监测与蚊幼孳生地调查相结合的方法，对上海市中心城区三带喙库蚊种群动态变化进行研究。研究结果显示三带喙库蚊高峰出现在7月份；人民广场及人民公园地区的三带喙库蚊构成比最高达到32.79％，人民公园2号监测点的三带喙库蚊构成比达到52.6％，并在人民公园1号监测点周边发现2处三带喙库蚊孳生地，而历年监测中三带喙库蚊间断性捕获，多出现在8月份。本研究在上海中心城区首次报道三带喙库蚊的孳生地，且该蚊种已成为公园和绿化区域的优势蚊种。随着气候变化与城市环境的改变，三带喙库蚊对城市环境的适应性不断提高，除淡色库蚊和白纹伊蚊外，三带喙库蚊也应成为上海市城区的重点防治蚊种。%Continual mosquito surveillances in People's Square & Park of Shanghai were carried out for investigating the population dynamics of Cx.tritaeniorhynchus and formulating an effective control measurement in downtown Shanghai .The peak value of Cx.tritaeniorhynchus population density in downtown Shanghai appeared in July; on contrary, routine surveillance performed a few years before indicated that the peak density of Cx.tritaeniorhynchus occurred in August.In addition, two positive breeding sites of Cx.tritaeniorhynchus were found for the first time in downtown Shanghai, and Cx. tritaeniorhynchus was the dominant species in People's Square & Park ( accounting for 32.79% in local mosquito community).The results acquired this time and from the surveillance performed the last 3 years caution us that Cx. tritaeniorhynchus has stabilized its population in downtown Shanghai.Cx.tritaeniorhynchus is a major vector species responsible on transmitting Japan B encephalitis ( JBE) in China, should be paid the same attention as to Cx.p.pallens and Ae.albopictus in downtown Shanghai;besides, the propotional government departments in charge of mosquito and mosquito-borne disease control should pay more attention to the new situation of Cx.tritaeniorhynchus in downtown Shanghai.
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