医巫闾山有瓣蝇类垂直分布调查分析

The Analysis of Survey on Vertical Distribution of Known Flies in Yiwulv Mountain

目的调查医巫闾山不同高度的有瓣蝇种类分布,成蝇组成,季节消长情况。方法于医巫闾山选择有代表性的不同高度重点地方,即山底、山中和山顶设三个固定调查点。以笼诱法进行种类分布,成蝇组成和季节消长调查。将诱获的成蝇,以敌敌畏毒死后,进行分类登记,并计算出月均虫只密度。结果年平均诱捕成蝇总数为10 248.5只,共60种,雄雌之比1∶1.4。以粪种蝇、银眉黑蝇、常齿股蝇、黑胸球果花蝇、西藏莫蝇、双毛芒蝇、夏厕蝇、叉叶绿蝇、叉丽蝇、丝光绿蝇、新陆原伏蝇、巨耳亚麻蝇、黑尾黑麻蝇为不同高度常见的优势蝇种,上述14种成蝇占诱捕总数的89.8%。结论医巫闾山不同高度的有瓣蝇种类分布,成蝇组成,季节消长情况怎样。

Objective To investigate the distribution, composition and seasonal dynamics of known flies in Yiwnlv Mountain at different heights. Method Three survey points were chosen at different representative heights in Yiwulv Moun- tain, the foot of the mountain, the halfway of the mountain and the top of the mountain. Through cage - lure method, we in- vestigated the species distribution, composition and seasonal dynamics of known flies. The induced adult flies were poisoned with dichlorvos to death and then underwent classification registration to calculate the average monthly density of flies. Result The average total number of trapping adult flies was 10 248.5, a total of 60 species, and the ratio of female to male was 1： 114. The common fly species at different heights were Grow Fly, Silver Eyebrow Black Fly, Yearly Tooth Stock Fly, Black Chest Cone Flower Fly, Tibet Mo Fly, Double Hair Long Grass Fly, Summer Toilet Fly, Fork Leaf Green Fly, Fork Beau- tiful Fly, Silk Light Green Fly, New Six Original Fu Fly, Huge Ear Flaxen Fly and Black Tail Black Hemp Fly. All of the above mentioned 14 species of adult flies accounted for 89. 8% of the total number. Conclusion The distribution, composi- tion and seasonal dynamics of the known flies in Yiwulv Mountain were reported in the paper.