关键词: 诱蚊诱卵器, 白纹伊蚊, 水质, 效果评价

Abstract:

Objective To observe the impact of water quality on the capacity of mosq-ovitrap for monitoring the density of Aedes albopictus and to evaluate the practical value of this monitoring method. Methods During July to August 2012, the peak season of Ae. albopictus, mosq-ovitraps were set in the garden of a hospital in Shenzhen, China to capture Ae. albopictus adults and eggs, and their capacities for capturing Ae. albopictus adults and eggs were compared. Results A total of 240 mosq-ovitraps were set, and 230 were recovered. The oviposition rate was 37.39%; the mosquito-trap rate was 18.26%; 51.16% of adult mosquitoes escaped. The oviposition rate was significantly higher in water from natural environment than in bottled mineral water (χ²=13.79, P<0.01). Using larva hatching as an indicator of positive oviposition response, there was a high similarity between the oviposition rate of Ae. albopictus determined using mosq-ovitraps and the actual oviposition rate (Kappa=0.828, P<0.01). The sensitivity and specificity of mosq-ovitraps for monitoring oviposition of Ae. albopictus were 82.56% and 97.92%, respectively, with a mean area under the ROC of 0.902 (range, 0.853-0.952). Conclusion Mosq-ovitrap has a good performance in monitoring the oviposition of Ae. albopictus, but its capacity for capturing adult Ae. albopictus is not satisfactory. Water quality has an impact on the performance of mosq-ovitrap in monitoring Ae. albopictus. Mosq-ovitrap has a good practical value in monitoring the oviposition of Ae. albopictus.

Key words: Mosq-ovitrap, Aedes albopictus, Water quality, Efficacy assessment