KERENTANAN NYAMUK Aedes aegypti di DAERAH KHUSUS IBUKOTA JAKARTA DAN BOGOR TERHADAP INSEKTISIDA MALATHION DAN LAMBDACYHALOTHRIN

Susceptibility Of Aedes Aegypti To Malathion And Lamdcyhalothrin From Jakarta And Bogor Population.Aedes aegypti (L) is an important vector of dengue fever and dengue haemmorhagic fever (DHF) in the tropical and subtropical countries including Indonesia. Insecticide control is the most common vector control measures in DHF. The application of insecticides sooner or later will cause resistance for target organism. Mosquito specimens were collected from five sub-districts in Jakarta and one sub-districtin Bogor from September 2006 to March 2007. The Ae. aegypti collections were made by larva and pupa survey from all containers in the studies area both indoor and outdoor. All the larvae samples were reared under laboratory condition, and females mosquitoes were fed with blood until fully engorged forsusceptibility test. Two insecticides were used for susceptibility test e.g. malathion (0.5%, 0.8% and 5.0%), and lamdacyhalothrin (0.05% and 0.25%) using susceptible test kits and impregnated paper. Insecticide susceptibility tests were carried out using the WHO standard test kits under ambient room temperature of 27-28 degrees Celsius and relative humidity of 75-80%. Total of 600 mosquitoes, (four replicates containing 25 mosquitoes each) were used for each test concentration and control. Results were observed hourly from one hour exposure to 5 hours holding periods time and after 24 hours. Data were analyzed using probit analysis to determine the 50% lethal time values (LT50) and 95% lethal time values (LT95). The patterns of insecticide susceptibility to malathion and lamdacyhalothrin for Ae. aegypti were determined. Results show the population of Ae. aegypti from study areas which were resistant to malathionare 0.05%, 0.8% and lamdacyhalothrin 0.05%. Only population of Ae. aegypti from West Jakarta and Bogor showed susceptible to malathion 5%. Population from North Jakarta demonstrated resistance to lamdacyhalothrin 0.25%, though 5 other populations are tolerant.Keywords: Aedes aegypti, insecticide, resistance, malathion, lamdacyhalothri