Resistance Status of Aedes Aegypti Larvae to Temephos in West Banjarmasin

Abstract

Temephos has been used in controlling vector of dengue hemorrhagic fever, Aedes aegypti since long time ago. Long and continous USAge of insecticides can increase the occurrence of resistance. This research aim to know the resistance of Ae. aegyptiin West Banjarmasin. We used experimental study with post test only with control group design. There were 8 groups of temephos treatment; 0,005 ppm, 0,01 ppm, 0,015 ppm, 0,03 ppm, 0,045 ppm, 0,060 ppm, 0,075 ppm and 0,090 ppm. Each group was exposed for the Ae.aegypti larvae and dead larvae observed after 24 hours exposure. Based on probit analysis, effective doses of temephos to ki1l50% larvae (Lethal Concentraticn/l.Cj..) was between 0,0064 - 0,0126 ppm (average = 0,00957 ppm) and LCgg was between 0,0196 - 0,0340 ppm (average = 0,0243 ppm). This research indicated that Ae.aegypti larvae in West Banjarmasin is resistant to temephos