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目的探索上海中心城区不同环境及不同昼夜时段成蚊种群构成的差异性。方法选取5个监测点和2个特定时段采用人诱停落法进行连续194 d的成蚊动态监测研究。结果人诱停落法2012年194 d共捕捉到成蚊1 666只,包括3属5种,白纹伊蚊和淡色库蚊分别占71.1%和27.7%;2个时段成蚊种群构成差异显著(χ2=817.553,P<0.01)。白纹伊蚊和淡色库蚊分别是第1时段和第2时段优势蚊种(构成比分别为94.3%和66.2%);人民公园成蚊密度[0.557只/(人·次)显著低于人民广场[1.312只/(人·次),P<0.05],5个监测点的成蚊种群构成差异显著(χ2=164.225,P<0.01)。结论研究提示人诱停落法不同监测时段与监测点成蚊种群与密度均存在显著差异,上海市中心城区的蚊媒防治工作仍应针对白纹伊蚊和淡色库蚊两种优势蚊种,采取有效的、针对性的防控措施。
Objective To explore the differences of adult mosquito population composition in different environments and different day-night time zones in downtown Shanghai. Methods Five monitoring sites and two specific time periods were selected for the study of dynamic monitoring of adult mosquitoes for 194 days using the method of human induced pause and drop. Results The number of adult mosquitoes was trapped at 194 days in 2012, of which 1 666 adults were found, including 5 species of 3 genera, and 71.1% and 27.7% of Aedes albopictus and Culex pipiens pallens respectively. The population composition of adult mosquitoes was significantly different in two periods (χ2 = 817.553, P <0.01). Aedes albopictus and Culex pipiens pallens were dominant mosquito species in the first and second periods respectively (the proportions were 94.3% and 66.2% respectively); the density of adults in People’s Park [0.557 / (person) times) was significantly lower than that of the people There were significant differences in the adult mosquito population among the 5 monitoring sites (χ2 = 164.225, P <0.01) in the square [1.312 / person / time, P <0.05]. Conclusion The study suggests that there are significant differences in population and density of adult mosquitoes between different monitoring periods and monitoring sites in the luring and stopping method. The mosquito control efforts in downtown Shanghai should still focus on two dominant species of mosquito, Aedes albopictus and Culex pipiens pallens, Take effective and targeted prevention and control measures.