现场比较诱蚊诱卵器与传统幼虫监测效果的研究

Comparative Study of the Monitoring Results of the Mosq-ovitrap Method and the Traditional Larval Index Surveys in the Field

目的 比较诱蚊诱卵器与传统幼虫指数监测结果，分析它们之间的关系。方法 于2004年3月至2005年11月在广东省佛山和揭阳市，在选定的试验现场随机从每5户家庭中选择1户布放1个诱蚊诱卵器，在医院、学校、机关事业单位、工厂和公园花圃的环境，按每25～50m距离布放1个诱蚊诱卵器。同时调查室内及室外或诱蚊诱卵器周围5m的积水容器和蚊虫孳生容器数。结果 在居民住户、医院、学校、机关事业单位、工厂和公园花圃共布放14902个诱蚊诱卵器，有效回收14648个，捕获白纹伊蚊962只，致乏库蚊5只，白纹伊蚊占99．5％；诱蚊诱卵器阳性932个，诱蚊诱卵指数为6．36；诱蚊密度指数为1．03±0．89，每个诱蚊诱卵器捕获蚊虫数0～10只。同时调查14902个住户或单位（以诱蚊诱卵器为中心周围5m范围环境）的积水容器8537个，蚊虫阳性容器844个，布雷图指数为5．66，房屋指数为3．87，容器指数为9．89，可见相同环境开展调查，诱蚊诱卵指数是布雷图指数的1．12倍，是房屋指数的1．64倍，是容器指数的0．64倍。结论 在社区登革热媒介监测中诱蚊诱卵指数和布雷图指数、房屋指数及容器指数存在正相关关系，且诱蚊诱卵指数与布雷图指数相接近。

Objective To compare the results and understand relationship between the mosq-ovitrap method and larval survey for detecting the presence of Aedes mosquitoes in the field. Methods The study was carried out in the cities of Foshan and Jieyang, Guangdong province, from March 2004 to November 2005. A mosq ovitrap was set every 5 random households and their premises, or set every 25-50 meters in a hidden and shady place in the surroundings of hospitals, schools, government office buildings, factories and gardens. Larval surveys and mosq-ovitrap method were used simultaneously in the households or in the areas of 5 meters around the trap set in the surroundings. Results In households, hospitals, schools, government office buildings, factories and gardens, 14 902 mosq-ovitraps were simultaneously set and 14 648 were collected back. The positive traps for adult mosquitoes was 932. The mosquito and oviposition positive index（MOI） and mosquito-trap density index（MDI） were 6.36 and 1.03±0.89 respectively. Total 962 Aedes albopictus （99.5%） and 5 Culex （0.5%） were collected. The maximum of the mosquito adults captured in a single trap was 10. At the same time, 8537 water containers in 14 902 households or premises （5 meters in circumference of the mosq-ovitrap） were checked, of which 844 contained the Aedes albopictus larvae. The Breteau Index, House Index and Container Index were 5.66, 3.87 and 9.89 respectively. The MOI was 1.12 times of the Breteau Index, or 1.64 times of the House Index, or 0.64 times of the Container Index. Conclusion There is a positive relationship between the MOI and the Breteau Index, and the House Index, the container Index respectively. The MOI is particularly approximate to the Breteau Index.