Abstract:

Objective To investigate Anopheline species in Chayu County of Linzhi Prefecture，Tibet. Methods Four natu? ral villages in Chayu County were selected in this study in 2010. The methods of overnight/semi?overnight trapping indoor and out? door human?bait，and overnight trapping with light traps were used，and all the Anopheline mosquitoes were confirmed by morpho? logical characteristics. Results Totally 2 991 Anopheline mosquitoes were captured，with 76.36%（2 284/2 291）of An. peditae? niatus，22.30%（667/2 291）of An. maculates group. The average densities of An. peditaeniatus by semi?overnight trapping were 56.2/per person indoor and 4/per person outdoor respectively，and the average densities of An. maculatus group by semi?overnight trapping were 17.8/per person indoor and 17.9/per person outdoor respectively. The man?biting rates of An. peditaeniatus by over? night trapping were 28.1/per person indoor and 2/per person outdoor respectively，and were both 8.9/per person to An. maculatus group. Conclusion An. peditaeniatus and An. maculatus group are the possible transmission vectors of malaria in Chayu County.

Key words: Malaria；Vector；Anopheline peditaeniatus； Anopheline maculatus group； Linzhi Prefecture

摘要：

目的 确定西藏林芝地区察隅县主要按蚊蚊种。方法 2010年7-8月在察隅县选择4个自然村， 采用通宵/半通宵室内、 外人饵帐诱捕法和通宵诱蚊灯诱捕法捕蚊， 对捕获的按蚊进行形态学鉴定。结果 共捕获按蚊2 991只， 其中带足按蚊2 284只 （占76.36%）， 多斑按蚊种团667只 （占22.30%）， 其他按蚊40只 （占1.34%）； 带足按蚊室内、 外半通宵平均密度分别为56.2只/夜和4只/夜， 多斑按蚊种团室内、 外半通宵平均密度分别为17.8只/夜和17.9只/夜； 带足按蚊室内、 外全通宵室内叮人率分别为28.1只/ （人⋅夜） 和2只/ （人⋅夜）， 多斑按蚊种团全通宵室内、 外叮人率均为8.9只/ （人⋅夜）。 结论 带足按蚊和多斑按蚊为察隅县优势蚊种， 是可能的疟疾传播媒介。

关键词: 疟疾； 媒介； 带足按蚊； 多斑按蚊种团； 林芝地区