关键词: 黑箱法, 灯诱法, 蚊虫, 监测

Abstract:

Objective To evaluate the application of black box method in mosquito surveillance by comparing the results from black box and lamp trap methods. Methods Two lamps were set at each surveillance site and one black box was put at a 10 m interval from each lamp. Surveillance was conducted twice every month. Results The total number of captured mosquitoes and the number of female mosquitoes by the lamp trap method was 3.50 times and 3.75 times higer than those monitored by black box method, respectively. The seasonal fluctuation curves reflected by both Methods were unimodal, with a peak in July. The monthly calculations of mosquitoes of the two Methods were highly correlated. Mosquitoes captured by the black box method included Culex pipens pallens (84.64%), Cx. tritaeriorhynchus (10.02%), and Anopheles sinensis (3.34%), and those by the lamp trap method were Cx. pipens pallens (80.47%), Cx. tritaeriorhynchus (11.79%), and An. sinensis (6.88%). Only a few Aedes albopictus and Armigeres subalbatus were trapped. The male-female ratios were similar between the two methods, whereas great difference in the mosquito number was found in distinct environments. Black box method was more effective in parks and hospitals than the other, while lamp trap was more effective in pasture lands and farms. Two peaks of mosquito density were shown on 05: 00 and 19: 00 with environmental difference between day and night. The day and night peaks of density were also present in parks, farms and pasture lands except hospitals and residential areas where only one night peak was shown. Conclusion With fewer requirements for equipment, operation skills and power supply, the black box method is an effective alternative to the lamp trap approach. Deployment before the night peak of density and collection after the early morning peak is recommended for mosquito monitoring.

Key words: Black box method, Lamp trap method, Mosquito, Monitoring