Effectiveness of temephos against Aedes aegypti larvae based on lethal concentration (LC50, LC90, and LC98-48 hours) and lethal time (LT50, LT90, and LT98)
Defrian Melta, Resti Rahayu, Hasmiwati
Dengue Hemorrhagic Fever is spread by Aedes aegypti. This disease tends to increase every year and its spread is getting wider. The use of temephos is an effort to control Ae. aegypti larvae. The purpose of this research is to know the value of Lethal Concentration (LC50, LC90, LC98-48 Jam) and Lethal Time (LT50, LT90, LT98) larvae Ae. aegypti against temephos. The method of this research is an experimental study that refers to the WHO standard using 20 Ae. aegypti larvae in each experiment. The concentrations of temephos used included 0.003 mg/L, 0.006 mg/L, 0.012 mg/L, and 0.025 mg/L. The results of this research were LC50, LC90, and LC98-48 hours respectively, namely 0.004 mg/L, 0.010 mg/L, and 0.014 mg/L. In addition, the values of LT50, LT90, and LT98 at a concentration of 0.003 mg/L respectively were 32.536 hours, 56.198 hours, 69.853 hours. The values of LT50, LT90, and LT98 at a concentration of 0.006 mg/Lrespectively were 28.741 hours, 51.909 hours, 65.665 hours. The values of LT50, LT90, and LT98 at a concentration of 0.012 mg/L respectively were 17.804 hours, 33.416 hours, and 44.606 hours. The values of LT50, LT90, and LT98 at a concentration of 0.025 mg/L respectively were 12.283 hours, 20.140 hours, 25.670 hours.