关键词: 蝇密度, 季节消长, 监测方法, 气候因素

Abstract: This article is to find out the seasonal variation, the composition and the influent factor of common fly species in Shanghai. The result indicates that in the fifty years great changes have taken place in those. Now, the main species in Shanghai is Chrysomya megacephala, Lucilia sericata, Musca domestica, Aldrichina grahami, Muscina stabulans. The peak periods of population density lasted from May to June and August to September. Changing the habitat environment and adopting Integrated Pest Management can alter the composition of common fly species, and continuous warm winter is the most important factor for the change of the seasonal variation.