The Persistence of Temephos (Abate) on Aedes aegypti L. Larvae Under Field and Simulated Conditions
Keywords:
Aedes aegypti L. larvae, Abate, persistence, LT50 and LT90Abstract
The persistence of larvicide product (Abate 1% SG) were evaluated for controlling Aedes aegypti L. larvae under field and simulated conditions. Laboratory strain of Ae. aegypti larvae were used in this study. Abate 1% SG was applied 1g per 10 liters of contained water or 1 ppm in a 200-litre jar. Twenty fourth-instar larvae of Ae. aegypti were added into the jar. Mortality of the larvae was recorded after 24 hours. Tests were performed continue weekly until the mortality rate of the larvae with less than 50% was observed. Results showed that under field conditions, the lethal times to kill 50% (LT50) and 90% (LT90) of the tested mosquitoes were 18.20 and 16.81 weeks, respectively while those LT50 and LT90 in simulated conditions were 25.93 and 24.13 weeks, respectively.
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