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蝇类在树上活动,文献曾有定性记载,这些简单地表示难以为局部地区的蝇类防治提供依据。为填补这一空白,我们于90年5月至7月对海南岛、广州、武汉、沈阳、长春、齐齐哈尔地区部分居住区内的各种树木栖蝇种类、数量、生活习性及防治对策进行了调查研究。结果表明:1、经对居住区49个树种,1531株树木调查,栖蝇树种只有17种。各栖蝇树种的有蝇阳性率在90%以上,蝇密度较高的树种有9种;2、在栖蝇树上采到蝇标本3298只,鉴定为43个蝇种,每个栖蝇树种以两个占比率最高的蝇种计算,主栖蝇种只有10个品种;3、调查的六个地区1531株树木,各地区栖蝇树木所占比率在21.2%～27.6%左右。各地区的栖蝇树种只有2—3种。地区间树木栖蝇的优势种多数相同,少数不同;4、居住区外环境的蝇类,白天除在一些孳生场所觅食外,还有很大数量的蝇类喜欢在一些树上活动,夜间也多栖息于这些树上。夜间树栖蝇种与数量均高于白天。靠近房舍的栖蝇树木,蝇密度高,远则低;5、外环境中大部分蝇种有在一些树木上活动与栖息习性,它为住区外环境的蝇类防制提供了依据。经对居住区距房舍较近的栖蝇树木进行药物喷树灭蝇可取得非常好的灭蝇效果。
Flies in the tree activities, the literature has a qualitative record, which simply said it is difficult for the prevention of flies in some areas to provide the basis. In order to fill this gap, we studied the species, quantity, habits and control strategies of various tree lynx species in some residential areas in Hainan Island, Guangzhou, Wuhan, Shenyang, Changchun and Qiqihar from May to July in 1990 Research. The results showed as follows: 1. After investigation of 49 tree species and 1531 trees in residential area, only 17 species of flies were found. The positive rate of flies in each species was over 90% and the species density was 9 in the flies. 2 3298 flies were collected from the flies, and 43 flies were identified. Each flies species In terms of the two species with the highest rates of occupation, there are only 10 species of the major species; 3. There are 1531 trees in the six regions investigated, and the percentage of the flies and trees in each region is about 21.2% -27.6%. There are only 2-3 species of flies in various regions. Most of the dominant species of tree-dwelling flies in the area are mostly the same, with a few differences; 4) Flies outside the residential area have large numbers of flies that prefer to live in some trees during the day besides foraging in some breeding places, Also habitat in these trees. Nocturnal species and numbers are higher than during the day. The flies close to the house, the density of flies is high, the distance is low; 5, the majority of flies in the outer environment have activity and habitat in some trees, it provides a basis for flies prevention and control outside the residential area environment. A good effect of killing flies can be obtained by spraying trees and detoxification of the amphibian trees near residential buildings in residential areas.