Kusumawathie P H D, Wickremasinghe A R, Karunaweera N D, Wijeyaratne M J S
Regional Office, Anti Malaria Campaign, Dutugemunu Mawatha, Watapuluwa, Kandy, Sri Lanka.
Trans R Soc Trop Med Hyg. 2008 Jul;102(7):705-11. doi: 10.1016/j.trstmh.2008.03.013. Epub 2008 May 16.
In this study we examined the costs and effectiveness of using larvivorous fish, Poecilia reticulata, and a chemical larvicide, temephos, in anopheline mosquito control in the riverbeds below the major dams in Sri Lanka. Five riverbeds below the dams, namely Laxapana, Kotmale 1, Kotmale 2, Nilambe, Rantembe and Victoria, were selected. Riverbed pools in Laxapana and Kotmale 1 were treated with P. reticulata; Rantembe and Victoria were treated with temephos; and Kotmale 2 and Nilambe were kept as controls. In each area, the anopheline larval density, before and after application of fish/temephos, was estimated. The cost of application of fish/temephos was estimated by activities involved for each treatment. After intervention, there was a significant reduction in anopheline larval density in the fish-treated areas compared with the temephos-treated and control areas. Application of P. reticulata was 2.67 times less costly than that of temephos. The cost of fish application can be further reduced if the community is involved in the application.
在本研究中，我们考察了使用食蚊鱼（孔雀鱼）和化学杀幼虫剂双硫磷，对斯里兰卡主要水坝下游河床中按蚊进行控制的成本和效果。选取了水坝下游的五条河床，分别是拉克斯帕纳、科特马勒1号、科特马勒2号、尼拉姆贝、兰滕贝和维多利亚。拉克斯帕纳和科特马勒1号的河床水池用孔雀鱼处理；兰滕贝和维多利亚用双硫磷处理；科特马勒2号和尼拉姆贝作为对照。在每个区域，估算了投放鱼/双硫磷前后按蚊幼虫的密度。通过每种处理所涉及的活动估算了投放鱼/双硫磷的成本。干预后，与双硫磷处理区和对照区相比，鱼处理区的按蚊幼虫密度显著降低。投放孔雀鱼的成本比投放双硫磷低2.67倍。如果社区参与投放，鱼的投放成本还可进一步降低。
