The Effect of Temephos to Mortality and Life Level of Aedes aegypti mosquitoes

Abstract

Temephos is an insecticide active ingredient often used by a community as Dengue Hemorrhagic Fever (DHF) vector control in imago. The development of Ae aegypti is influenced by biotic and abiotic factors. This study aimed at determining the effects of temephos concentration on mortality and a life level of Ae aegypti at some concentration tests.The experimental design used in this study was Complete Random Design (CRD). This study involved temephos as the active ingredient and third instar Ae. Aegypti larvae originating from Pangandaran Regency. Data analysis used an ANOVA test with 5 treatments and 5 replications. The results showed that there was any influence of concentration towards a number of mortality, a life level, morphology of larvae, pupae and imago, a number of males and females, and a number of eggs hatchability. Temephos concentration affected the mortality of third instar larvae of Ae. aegypti with temephos concentration of 0.019 ppm, 0.069 ppm, 0.105 ppm, and 0.140 ppm and affected a life level of Ae. aegypti with biological parameters.

The Longevity of Aedes aegypti Larvae in Several Water Sources in Surabaya

“…aegypti larvae very quickly, because the toxicity of temephos is absorbed into the body of the larvae. [30][31][32] The absorbed toxin attacks the larvae's central nervous system, causing symptoms such as restlessness, hyperexcitability, tremors, convulsions, and paralysis. 32 Temephos inhibits cholinesterase enzyme, which causes a disorder in the larva nervous system due to the accumulation of acetylcholine in nerve endings, and this will lead to the larval mortality.…”

“…32 Temephos inhibits cholinesterase enzyme, which causes a disorder in the larva nervous system due to the accumulation of acetylcholine in nerve endings, and this will lead to the larval mortality. [30][31][32][33] A study in South Kalimantan showed that the lowest concentration of temephos was 0.005 ppm resulted in 39% of larvae mortality. The highest concentration of 0.030 ppm resulted in 100% of larvae mortality.…”