Abstract: Objective To investigate the population densities of flies in Changping district of Beijing, China in 2007-2011 and to provide a basis for scientific control measures. Methods A canopy-style flytrap and commercially available fermented bean curd (as bait) were used to capture flies for 6 h. All the captured flies were brought back to the laboratory for counting and identification. Results A total of 7623 flies were captured in Changping district in 2007-2011. The population density of flies was 13.03 flies/(cage·d) in 2007, and it decreased year by year, reaching the lowest level［4.56 flies/(cage·d)］in 2011. In Changping district, the population densities of flies in different years were significantly different (F_(4,100)＝3.07, P＝0.020). The three dominant species of flies were Helicophagella melanura, Musca domestica, and Muscina stabulans in sequence. Conclusion It is still necessary to take integrated management measures including environmental management coupled with insecticide to control the flies in Changping district of Beijing.

Key words: Population density of flies, Monitoring, Species of flies

摘要： 目的 了解昌平区2007－2011年蝇密度动态变化情况,为科学防治提供决策依据.方法 采用天幕式捕蝇笼捕蝇,以市售腐乳为诱饵诱捕6 h,将捕获蝇类统一带回实验室计数,鉴定种类.结果 2007－2011年昌平区共捕蝇7623只,其中2007年蝇密度为13.03只(/ 笼·d),之后蝇密度逐年下降,2011年降至最低为4.56只(/ 笼·d);昌平区蝇密度不同年份间差异有统计学意义(F_(4,100)＝3.07,P＝0.020);蝇种构成居前3位的优势种群依次为黑尾黑麻蝇、家蝇、厩腐蝇.结论 昌平区的蝇类防制工作仍应采取以环境治理为主、化学防治为辅的综合防制措施.

关键词: 蝇密度, 监测, 蝇种