[Investigation on anopheline species in Chayu County, Linzhi Prefecture of Tibet Autonomous Region].

ABSTRACT

OBJECTIVE: To investigate Anopheline species in Chayu County of Linzhi Prefecture, Tibet. METHODS: Four natural villages in Chayu County were selected in this study in 2010. The methods of overnight/semi-overnight trapping indoor and outdoor human-bait, and overnight trapping with light traps were used, and all the Anopheline mosquitoes were confirmed by morphological characteristics. RESULTS: Totally 2 991 Anopheline mosquitoes were captured, with 76.36% (2 284/2 291) of An. peditaeniatus, 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 overnight 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.