双硫磷对箅子型雨水井中白纹伊蚊孳生的干预研究

莫旦红; 薛文浩; 朱敏慧; 刘丽军; 刘洪霞; 戴丹华

doi:10.19428/j.cnki.sjpm.2018.18777

双硫磷对箅子型雨水井中白纹伊蚊孳生的干预研究

Temephos intervention in breeding of Aedes albopictus in grate type water wells

摘要

摘要:
目的探讨居民区箅子型雨水井实施1%双硫磷干预对白纹伊蚊的控制效果，旨在为制定登革热防控方案提供依据。
方法2017年7—9月在上海市闵行区七宝镇选取2个2000年前建造的居民小区的箅子型雨水井作为研究现场，实验组雨水井内投放1%双硫磷(安备)杀虫颗粒剂，对照组不施加任何措施，观察两组蚊幼阳性率、成蚊密度、诱蚊诱卵指数等指标。
结果共调查箅子型雨水井696口，其中327口有水，实验组幼蚊阳性率为13.04%(21/161)，对照组为40.96%(68/166)，差异有统计学意义(P < 0.01)。实验组和对照组捕获白纹伊蚊成蚊分别为16只和332只，成蚊密度分别为(1.778±1.093)和(36.889±18.052)，对照组是实验组的20.57倍，差异有统计学意义(P < 0.01)。两组各布放150只诱蚊诱卵器，实收共273只，实验组诱蚊诱卵指数、蚊幼阳性率、幼卵阳性率为25.90、22.30%、7.91%，对照组为51.49、48.51%、17.16%。
结论在蚊密度高峰期前，对居民住区箅子型雨水井实施1%双硫磷剂干预效果明显，有利于登革热疫情的预防控制。

Abstract:
ObjectiveTo investigate the control of Aedes albopictus in residential areas by dosing 1% temephos into grate type water wells, then providing an effective basis for the prevention and control of Dengue in residents district.
MethodsIn July-September of 2017, grate type water wells built before 2000 were selected as research sites and divided into experimental and control groups in two residential areas of Qibao Town of Minhang District of Shanghai. And then 1% temophos granule(Abate^®) were put into the water wells of the experimental group, while the wells of the control group were put nothing. Then we investigated the indexes as positive rate of mosquito larvae OI, density of adult mosquito PMI by CO₂ mosquito trap, and mosq-ovitrap index (MOI) utilizing Mosq-ovitrap.
ResultsA total of 696 grate type water wells were investigated, of which 327 had water. The positive rates of larvae survival between experimental group 13.04% (21/161)and control group 40.96% (68/166) of grate type water wells were statistically significant (P < 0.01).The positive rates of the average of adult As. albopictus between experimental group(1.778±1.093)and control group(36.889±18.052)were statistically significant(P < 0.01).The control group was 20.57 times the density of the experimental group. Each group was placed with 150 Mosq-ovitraps, while 273 of them were collected. The MOI, PMI and OI in the experimental group were 25.90, 22.30% and 7.91%.The MOI, PMI and OI in the control group were 51.49, 48.51% and 17.16%.
ConclusionThe intervention measure of dosing 1% temephos into grate type water wells in the residential district before the peak of mosquitoes density proves to be obviously effective on the prevention and control of Dengue fever.

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