MT-1二氧化碳诱蚊器诱捕白纹伊蚊效果观察

Evaluation of the trapping effect of MT-1 carbon dioxide light-trap on adult Aedes albopictus

目的评估MT-1二氧化碳(CO_2))诱蚊器诱捕白纹伊蚊的效果。方法采用析因设计方案,设6个CO_2流量组和1个CO_2空白对照组、10个监测时段和7个取样点,在每个取样点布放诱蚊灯,每2 h调整诱蚊器的CO_2流量并更换捕蚊笼,将采集到的蚊虫分类并计数,监测时间为02:00-22:00,探讨CO_2流量、监测时段和取样点对MT-1 CO_2诱蚊器诱捕白纹伊蚊效果的影响。结果 (1)共捕获蚊类1122只,其中白纹伊蚊占83.69%;(2)CO_2流量组对白纹伊蚊的诱捕效果高于对照组(F=3.05,P=0.01),流量为6 L/min时捕获的白纹伊蚊最多;(3)不同监测时段对白纹伊蚊捕获数量的影响差异有统计学意义(F=2.98,P=0.03),18:00-20:00和04:00-06:00两个时段捕获的白纹伊蚊数量较多;(4)各取样点捕获的白纹伊蚊差异无统计学意义(F=0.47,P=0.80)。结论 MT-1 CO_2诱蚊器对白纹伊蚊有诱捕效果,可用于监测白纹伊蚊;建议在傍晚时挂灯,CO_2流量设置为6L/min。

Objective To evaluate the trapping effect of MT-1 carbon dioxide light- traps on adult Aedes albopictus. Methods A factorial design was conducted to compare six CO2 flow groups and one blank control at 7 sampled sites during 10 surveillance periods. The traps were placed at each sample site to collect mosquitoes, and were replaced with new devices with the flow rate adjusted every two hours between 02 ： 00-22 ： 00. Results （ 1 ） A total of 1122 aduh mosquitoes were collected and identified as two species, including 939 Ae. albopictus; （2） Mosquitoes were collected more efficiently in the CO2 flow groups （F=3.05, P=0.01 ）, and the highest number of collected mosquitoes was observed at ailow rate of 6 L/min; （3） The numbers of captured Ae. albopictus were statistically different in distinct surveillance periods （F=2.98, P=0.03）, and most of them were captured during 18 ： 00-20： 00 and 04： 00-06 ： 00; （4） No difference was found in the captured Ae. albopictus at the sample sites （F=0.47, P=0.80）. Conclusion The MT-1 carbon dioxide light-traps could be used to collect adult Ae. albopictus at a recommended CO2 flow rate of 6 L/min at dusk.