福州口岸诱卵器法的现场应用研究

Study of application in the field on ovitrap method at Fuzhou frontier port

目的进一步研究诱卵器法在口岸媒介监测现场的应用技术。方法诱卵器法。结果 (1)诱卵器放置不同高度时,0m组和1m组的诱卵指数分别为87.68和83.79,0m组高于1m组(χ2=13.24,P<0.005),0m组和1m组的幼虫密度分别为13.21条/个和11.23条/个,0m组高于1m组(t=2.259,P=0.05);(2)诱卵器放置不同时间时,4d、7d和10 d组的诱卵指数分别为28.00、74.50和76.41,4 d组低于7 d组(χ2=86.54,P=0.000)和10 d组(χ2=92.69,P=0.000),4d、7d和10d组幼虫密度分别为2.095条/个、9.11条/个和11.36条/个,4d组低于7d组(t=2.334,P=0.024),7d组低于10 d组(t=4.691,P=0.000);(3)诱卵指数和幼虫密度呈较为密切的正相关(0 m组r=0.779,P=0.008;1 m组r=0.794,P=0.006),不同监测时间和监测点诱卵指数和容器指数的关系需进一步研究。结论在福州口岸建议诱卵器放置在地面上,放置时间为7～10d,以提高成蚊产卵率,增加敏感性;需进一步研究诱卵器法和布雷图指数、房屋指数和容器指数在口岸地区的关联性,探索评价指标的推广应用。

Objective To study the application in the field on ovitrap method at frontier ports. Methods The ovitrap method was chosen. Results （1） When ovitraps were placed at different heights,the larval positive index of 0 meters group and 1 meters group were 87.68 and 83.79, respectively, and there was significant difference between them （X2 = 13.24, P 〈 0.005）; The larval density of 0 meters group and 1 meters group were 13.21 and 11.23, respectively, and there was significant difference between them （t=2.259, P=0.05）; （2） When ovitraps were keep different days, The larval positive index of 4 days group and 7 days group and 10 days group were 28.00 and 74.50 and 76.41, respectively, the positive index of 4 days group was lower than that 7 days group （X2 = 86.54, P = 0.000） and of 10 days group（x2 = 92.69, P =0.000）. The larval density of 4 days group and 7 days group and 10 days group were 2.10 and 9.11 and 11.36, respectively, the highest was that of 10 days group, and then of 7 days group, and 4 days group. （3）There was positive correlation between the larval positive index and the larval density （0 meters group：r = 0.779, P = 0.008, 1 meters group：r = 0.794, P = 0.006） and the relationship between them on different docks and different times should be observed further. Conclusion We should placed ovitraps on the ground and keep 7-10 days on ovitrap method in vector surveillance at Fuzhou frontier ports in order to improve the mosquito oviposition rate and sensitivity of monitoring, and enhance the study of the relationship between ovitrap index and Breteau index and housing index and container index at frontier ports to explore evaluation index＇s application.