摘要
目的：研究三带喙库蚊的分布特点及乙型脑炎病毒的感染率。方法：在农村畜圈和人房捕蚊，用Ｃ６／３６细胞和小白鼠法分离病毒。结果：采获成年雌蚊３５种７０１６７只，其中三带喙库蚊２０４６４只，构成比为２９１６％，季节高峰是７～９月。从三带喙库蚊中分离出２０株乙型脑炎病毒，批阳性率为６２３％，现场感染比１∶７７２，最低带病毒率１３０‰。结论：三带喙库蚊在云南广泛分布，属优势蚊种，是云南乙型脑炎的主要传播媒介。
Objective:To study the characterized distribution of Culex tritaeniorhynchus mosquitoes and their infection rate with Japanese encephalitis virus in Yunnan province.Methods:Collecting mosquitoes from the indoor and the stables of livestocks in villages.Using C6/36 cells and mice to isolate viruses.Results: 70 167 adult female mosquitoes belonging to 35 species were captured.The component rate of C.tritaeniorhynchus was 29 16 %( 20 464 / 70 167 ),its density peak was from July to September.Twenty strains of Japanese encephalitis(JE) virus were isolated from C.tritaeniorhynchus (321 pools; 15 442 mosquitoes).The positive isolation rate 6.23 %(per 100 pools),the minimal field infection rate 1∶772 or the mosquito body virus carrier rate 1.30 ‰(per 1 000 mosquitoes).Conclusions: C.tritaeniorhynchus was widely distributed over Yunnan province,which belong to the superior species of mosquitoes. C.tritaeniorhynchus might be the main transmitting vector of JE virus in Yunnan.
出处
《中国媒介生物学及控制杂志》
CAS
CSCD
1999年第3期192-194,共3页
Chinese Journal of Vector Biology and Control
关键词
蚊虫
三带喙库蚊
乙型脑炎病毒
Mosquito
Culex tritaeniorhynchus
Japanese encephalitis virus
