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目的了解2010年长江三峡水库消落区内不同季节、不同海拔高度蝇类种类和密度变化,为制定科学防控措施提供依据。方法 2010年在三峡库区上、中、下游选择4个典型消落区作为监测点,分别于退水后的6月份和蓄水前的9月份进行监测。在消落区中按10 m海拔高度差设置3个监测海拔梯度,每个海拔梯度中用3只诱蝇笼进行蝇类密度监测。结果 2010年共捕获89只苍蝇,隶属7蝇种,其中棕尾别麻蝇45只,占51%,为优势种;其次是市蝇24只,占27%;家蝇10只,占11%;丝光绿蝇7只,占8%;伏蝇、铜绿蝇和夏厕蝇各1只,各占1%。结论在三峡消落区范围内,存在着多种蝇类,均处于低密度水平。
Objective To understand the changes of species and density of flies in different seasons and altitudes in the Three Gorges Reservoir area in 2010, and provide the basis for the formulation of scientific control measures. Methods In 2010, 4 typical zones were selected as the monitoring points at the upper, middle and lower reaches of the Three Gorges Reservoir area, and monitored respectively in June after the water withdrawal and September before the water storage. Three monitoring altitude gradients were set up in 10 km altitude range in the ebb zone, and three fly trap cages were used in each elevation gradient to monitor flies density. Results A total of 89 flies were seized in 2010, belonging to 7 flies species. Among them, 45 flies (45%) were the dominant species, followed by 24 flies (27%), 10 flies (11%), Filamented green flies 7, accounting for 8%; Volatile, Culex pipiens and summer shower flies each 1, each 1%. Conclusion There are many kinds of flies in the range of the Three Gorges catchment, all at low density.