诱蚊诱卵器与诱卵杯现场监测效果的比较研究

Comparison of the Monitor Results Between Mosq-ovitrap and Ovitrap in the Field

目的 通过诱蚊诱卵器和诱卵杯在现场的平行性试验，分析两者对伊蚊的引诱效果以及是否存在相关关系，进一步评估诱蚊诱卵器现场监测伊蚊的效果。方法 2004年8—11月和2005年2—8月，选择广州的一个校园，将准备好的诱蚊诱卵器和诱卵杯每隔50m平行布放在阴凉隐蔽的场所，两个距离在1m左右，每月交替摆放位置，布放后4和7d检查诱蚊诱卵结果。结果 诱蚊诱卵器和诱卵杯布放4d时，阳性指数分别是35．5和56．7，布放7d时阳性指数分别是53．3和71．5，诱卵杯布放7a时的诱卵指数是诱蚊诱卵器布放4d时诱卵指数的2倍。诱蚊诱卵器可以诱集成蚊，布放4d，回收662个诱蚊诱卵器，诱伊蚊密度指数为1．21±1．12，每个诱捕蚊虫为0～8只；布放4d的诱蚊诱卵器诱卵指数与诱卵杯布放7d的诱卵指数存在正相关关系，r=0．838，P=0．001，y=25．548＋1．312x。结论 诱蚊诱卵器法直接通过诱蚊诱卵指数敏感地反映实际成蚊密度的变化和季节消长，诱蚊诱卵指数与目前国际通用的诱卵杯诱卵指数存在正相关关系。

Objective To compare the results between the mosq-ovitrap and the Ovitrap in the field. Methods The trial was carried out in a campus in Guangzhou from August to November 2004, and from February to August 2005. One mosq- ovitraps and one ovitraps at intervals of 1 m were set every 50 m at hidden and shady spot and the positions of two kinds traps were alternated each month. Mosquitoes captured and the egg positive traps were counted and recorded on the 4^th day and the 7^th day since the installation. Results On the 4^th day since installation, the positive indices of mosq-ovitrap and ovitrap were 35.5 and 56.7 respectively; and at Th days, the positive indices were 53.3 and 71.5 respectively. In total, the oviposkion index（OI） of the ovitraps at Th days was nearly 2 times of the mosquito and oviposition positive index（MOI） of mosq-ovitraps installed for 4 days. 284 （99.3 % ）Aedes albopictus, and 2 Culex quinquefasciatus were captured in the 662 mosq-ovitraps installed for 4 days. The mosquito （ Aedes ）-trap density index （MDI） was 1.21±1.12, the number of caught mosquitoes ranged from 0 to 8 in all the mosq-ovitraps. The results of the surveillance in each month indicated that there was positive correlation between the MOIs of the mosq-ovitraps set for 4 days and the OIs of the ovitraps set for 7 days （ r = 0. 838, P = 0. 001, y = 25. 548 ＋ 1. 312x）. Conclusion When the mosq-ovitraps were applied for 4 days, the MOI could reflect the population seasonal dynamic of mosquito. There was positive correlation between the MOIs of the mosq-ovitraps and the OIs of the ovitraps .