关键词: 蝇密度, 季节消长, 监测

Abstract: Objective To analyzes the population composition and seasonal fluctuation of flies in Changping district, Beijing from 2012 to 2016 and provide the basis for flies control. Methods The cage trapping method was ued to capture flies from April to October during 2012-2016. The surveillance sites were chosen in the farmer's market, outdoors of restaurant, the green belts of park, the residential area, the hospital and the hotel in different locations in Changping district. The captured flies were counted and identified, and density calculated. Results In total 6 273 adult flies were captured from 2012 to 2016 and the average density of flies was 3.73 flies/cage. The highest density was found in 2015 (5.98 flies/cage) and the lowest was found in 2016 (1.63 flies/cage). Helicophagella melanura (41.11%), Muscina stabulans (22.88%), and Lucilia sericata (19.34%) were the predominant species. The highest density of flies ground was found in green belt (10.66 flies/cage) and the lowest was found in hotels and restaurants (0.51 flies/cage). Conclusion Integrated control measures with chemical and physical methods before activity peaks should be taken to substantially reduce the density of flies and incidence of fly-borne diseases.

Key words: Fly density, Seasonal fluctuation, Surveillance