Evaluation Of Aedes Albopictus Control Programme By Source Reduction

Aedes albopictus is an extremely important dengue fever vectors. Integrated pest management (IPM) includes environmental management, biological control, chemical control, regulation and control of genetic control, and so on. The current mosquito control is more focus on the use of pesticides to kill adult mosquitoes while ignoring the water is the most basic elements to mosquitoes. Environmental control to eliminate mosquito breeding is the method not only can reduce the mosquito eggs, and has a green, not resistance, and many other advantages.Control of Ae. albopictus population through source reduction was carried out in Shanghai Forest Park recreation area and Shanghai Internal combustion engine research institute in 2006 and 2007. Source reduction area Forest Park removed breeding habitats to control Ae. albopictus population. The control area, Internal combustion engine research institute, did not take any measures. Ovitraps, human-bait and CO2 traps were used to evaluate the experiment.The results are as follows:1. After source reduction, Ae. albopictus adult and larvae density gradually decreased. It is effective through source reduction to control Ae. albopictus population after 2 to 3 weeks.2. OI and mosquito adult density is relevant, but sometimes occurs deviation. When temperature increases or more breeding, OI is corresponding higher density of adult mosquitoes. When temperature decreases or less breeding, OI is corresponding lower density of adult mosquitoes.3. Rainfall can increas the potential of increase the density of Ae. albopictus, and it needs the factors such as temperature to create the higher density of mosquitoes; less rainfall can reduce the number of Ae. albopictus breedings and as it becames a limited factor will reduce the density of mosquito density.4. From July to October in 2007, Ae. albopictus had the proportion of the first, 80.0% in mosquito control area, while in experimental area Culex tritaeniorhynchus had the proportion of 31.9 %, Cx. pipiens pallens accounted for 30.2%.5. OI is the best monitoring indicator for ovitrap.6. As a adult Ae. albopictus monitoring method, human-bait is better than CO2 traps into a low density of mosquitoes environment, and CO2 traps is a better choice when the mosquito density is more than 40 mosquitoes/human-hour.