Lethal toxicity LC₅₀ of permethrin insecticide and its physiological and histopathological effect on common carp and nile tilapia

Abstract

Permethrin insecticide is commonly used in the worldwide due to the best effectivity in pest control and easier to degrade in the field. However, the implementation in the field of this insecticide is high will cause environmental pollution. It has been reported that aquatic environment at Singkarak lake containing permethrin. The aims of this experiment is to determine of lethal toxicity (LC50) of permethrin insecticide and its physiological effect on common carp and nile tilapia fish. The test fish was common carp and nile tilapia. Insecticide formula with permethrin active agent as a material test was used. Static toxicity method in the laboratorium was performed. Parameters in this experiment observed such as LC50, blood glucose, and histopathological of gill and liver tissues. The result showed that the permethrin insecticide had a high toxic to common carp and nile tilapia with the LC50-96h values were 0.49 dan 0.52 mg/L, respectively. The blood glucose of common carps was ranging from 29.7±0.6–118.3±0.7 mg/DL where the nile tilapia was ranging from 27.7±0.9 – 58.7±1.5 mg/DL. The blood glucose would be increased with increasing the permethrin concentration. The histopathological of gills and liver tissues both of common carp and nile tilapia were hyperplasia and necrosis.