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目的了解2010年长江三峡水库消落区内退水后、蓄水前的蚊虫种类构成和密度情况,为蚊媒后续监测及蚊媒病的防制提供基础依据。方法在三峡库区上、中、下游选择4个典型消落区作为监测点,于2010年分别在库区退水后和蓄水前进行蚊媒监测。每个监测点按10 m海拔高程差设置3个梯度,每个梯度每次设3盏诱蚊灯。结果 2010年消落区成蚊监测共布放90灯次,捕获蚊虫101只,其中三带喙库蚊22只,占捕获总数的21.78%;中华按蚊和致倦库蚊各占16.83%;骚扰阿蚊占6.93%,其他蚊种占37.63%。结论三峡水库消落区提供了蚊类孳生环境,蚊密度处于低水平,表现了低海拔向高海拔的递减趋势;消落区存在流行性乙型脑炎传播媒介三带喙库蚊和疟疾传播媒介中华按蚊。
Objective To understand the species composition and density of mosquitoes prior to water withdrawal in the watershed of the Three Gorges Reservoir in 2010 and provide the basis for follow-up monitoring and mosquito-borne disease prevention. Methods Four typical watersheds were selected as the monitoring points in the upper, middle and lower reaches of the Three Gorges Reservoir Area. In 2010, mosquito vectors were monitored after the watershed in the reservoir area was drained and before the water storage. Each monitoring point to set the 10 m elevation gradient of three gradient, each gradient set 3 mosquito lamp. Results In 2010, a total of 90 light-emitting mosquitoes were monitored and 101 mosquitoes were caught, of which 22 were Culex tritaeniorhynchus, accounting for 21.78% of the total number captured. Anopheles sinensis and Culex quinquefasciatus each accounted for 16.83% A mosquito accounted for 6.93%, other mosquito species accounted for 37.63%. Conclusion The mosquito breeding environment was provided in the fluctuation area of the Three Gorges Reservoir. The mosquito density was at a low level, showing a decreasing trend from low altitude to high altitude. There were epidemic encephalitis vectors of Culex tritaeniorhynchus and malaria transmission in the ebb zone, Anopheles sinensis.