绍兴市区蝇类密度及季节消长研究

目的了解与掌握绍兴市区的蝇类密度与季节消长规律，为蝇类防治提供科学依据。方法笼诱法。结果绍兴市区2年平均蝇类密度为161．01只／笼，新城区蝇类密度明显高于老城区，2004年蝇类密度明显高于2003年。大头金蝇、丝光绿蝇、家蝇、巨尾阿丽蝇、亮绿蝇、棕尾别麻蝇、市蝇、铜绿蝇、厩腐蝇的平均密度依次为92．21、17．89、16．30、8．76、8．17、5．21、4．20、3．88、1．21只／笼。蝇类季节消长呈双峰型，高峰在7月、9月。各类型生境蝇类密度分别为绿化带（320．27只／笼）、农贸市场（164．61只／笼）、居民区（125．91只／笼）、餐饮业（112．8只／笼）、垃圾中转站（111．01只／笼）。结论不同时间、调查点、生境的蝇类密度均有差异，气温、孳生环境、防治措施是主要的影响因素。

Density and seasonal decay trend of fly in Shaoxing city

Objective To find out the density and seasonal decay trend of fly species in Shaoxing city. Methods Baited cage trap method was used to trap flies. Results In 2003 - 2004, average density of fly species was 161. 01 per cage. The density of fly species in new city area was higher than old city,and in 2004 it was higher than in 2003 evidently. It was observed that average density of Chrysomya megacephala, Lucilia sericata ,Musca domestica, Aldrichina grahami, Lucilia illustris, Boettcherisca peregrine, Musca sorbens, Lucilia cuprina, Muscina stabulans were 92. 21,17. 89,16. 30,8.76,8.17,5.21,4. 20,3.88 and 1.21 pieces per cage respectively. The seasonal decay trend of fly species had two peaks, appearing in July and September. The average density of fly species in greenbelt, farm produce market, residential area, food industry, garbage collecting site were 320. 27, 164. 61, 125. 91, 112. 88, 111.01 pieces per cage respectively. Conclusion The density of fly species were different in different months, places and habitats. The important influencing factor were air temperature, habitat and controlling measure.