Continuous Mosquito Larvae Control by Using Novaluron in Bangkok Metropolitan-การควบคุมลูกน้ำยุงแบบต่อเนื่องโดยใช้ สารโนวาลูรอนในพื้นที่กรุงเทพมหานคร

Abstract

            Novaluron, an insect growth  regulator (IGR) against mosquito larvae recommended by WHO, was evaluated in field after 6 months of monthly applications at 8 sites in Bangkok Metropolitan communities.  Novaluron was premixed with water and sprayed over water surface.  The concentrations depended on the areas.  Random sampling was used to pre and post count the amount of larvae in each treatment. Over 95 percent reductions of mosquito larvae were reported.  The sampling showed that there were many, for example, Aedes aegypti, Aedes albopictus, and Culex quinquefasciatus jumbling up.  In conclusion, Novaluron can be used to control the mosquito larvae effectively when applied once a month without any adverse effect observed.  However, it may be more suitable for stagnant water than flowing one, which needs more chemicals to effectively cover the large moving surface.  So, Novaluron has a potential to play a main role for controlling mosquito larvae and reduce the risk of vector-borne disease in suburban areas.

Key words: novaluron, mosquito larvae, effectiveness