关键词: 蚊密度, 监测, 分析

Abstract: Objective To comprehensively grasp and analyze the mosquito density and its seasonal fluctuation in Xingqing, Xixia, and Jinfeng districts of Yinchuan, Ningxia Hui autonomous region, China, to provide a scientific basis for the formulation of effective prevention and control programs for vector-borne diseases such as Japanese encephalitis. Methods In accordance with the requirements of the Ningxia Vector Surveillance Implementation Protocol, the lamp trapping method was used to monitor the mosquito density in Xingqing, Xixia, and Jinfeng districts of Yinchuan from May to September of each year from 2016 to 2018, and the surveillance data were collected and analyzed. Results In 2016-2018, a total of 11 690 mosquitoes were captured in the three districts of Yinchuan, with a mean mosquito density of 15.06 mosquitoes/light·night, which belonged to 3 species, 2 genera, i.e., Culex pipiens pallens, Anopheles sinensis, and Cx. tritaeniorhynchus. Culex pipiens pallens accounted for 87.01% of the total number of adult mosquitoes captured, and was the dominant species. The mosquito density in the three districts were as follows:Jinfeng district > Xixia district > Xingqing district. The mosquito density in different habitats was as follows:livestock areas > rural houses > parks > hospitals > urban residential areas. According to the monthly density analysis from 2016 to 2018, the mosquito density peaked in July and August. The species composition of mosquitoes varied from year to year (χ²=570.738, P<0.001). Conclusion The local mosquito characteristics implies the necessary to increase the surveillance efforts for facilitating better mosquito control program in Yinchuan, China.

Key words: Mosquito density, Monitoring, Analysis