缅甸北部克钦地区蚊类种群组成初报

Preliminary observations on mosquito species composition in Kachin Region of Nothern Burma

目的了解缅甸北部地区的蚊类种群构成及对蚊类物种多样性进行初步观察。方法2008年8-9月分别在靠近中国边境地区的4个居民点用CDC诱蚊灯捕蚊,对所获蚊虫进行分类计数和对数据进行统计学分析。结果人房共捕获蚊虫2亚科8属17亚属45种2268只,牛房共捕获蚊虫2亚科7属12亚属33种1703只,其中发现人房主要优势蚊种和优势度依次为微小按蚊(58.16)、可赫按蚊(46.27)、伪杂鳞库蚊(45.68)、三带喙库蚊(41.97)、杰普尔按蚊(40.18);牛房主要优势蚊种和优势度分别为可赫按蚊(34.37)、三带喙库蚊(34.30)、微小按蚊(29.13)、美彩按蚊(27.68)。人房、牛房蚊虫的多样性指数和均匀性指数分别为2.61、1.58和2.68、0.48。结论主要疟疾媒介微小按蚊是当地人房的优势种,牛房捕获的微小按蚊绝对数量少于人房。

Objective To determine the composition of mosquito species in northern Burma and provide preliminary observations on the diversity of these species. Methods From August to September in 2008,CDC mosquito light traps were used in four settlements in the region close to the Chinese border,and captured mosquitoes were classified and counted and the data were analyzed. Results A total of 2268 mosquitoes of 45 species,17 sub-genera,8 genera,2 sub-families were captured in human resident houses,as well as 1703 ones of 33 species,12 sub-genera,7 genera,2 sub-families in cattle breeding rooms. The dominant species and corresponding dominance in human houses were Anopheles minimus （58.16）,An. kochi （46.27）,Culex pseudovishnui （45.68）,Cx. tritaeniorhynchus （41.97） and An. jeyporiensis （40.18）; and those in cattle shelters were An. kochi （34.37）,Cx. tritaeniorhynchus （34.30）,An. minimus （29.13） and An. splendidus （27.68）. The diversity index and evenness indices were 2.61 and 1.58 versus 2.68 and 0.48 in human houses and cattle houses,respectively. Conclusion The dominant species,An. minimus,was the major vector in local human houses,with significantly higher in numbers than in cattle shelters.