Toksisitas Letal (LC50) Zat Surfaktan Linear Alkylbenzene Sulfonate terhadap Ikan Cere (Gambusia affinis)

Mosquito fish (Gambusia affinis) is a species often used as bioindicator because it has high adaptability to water quality changes. Linear alkylbenzene sulfonate (LAS) surfactant found in waters and can cause death for the biota that lives it. This study aimed analyze impact of LAS on survival mosquito determine minimum concentration tissue damage. Research conducted during April 2022 using 500 fishes. We did several tests, including lethal toxicity test find out The results showed LC50 values surfactants at exposure times 24, 48, 72, 96 hours were 7.64, 7.43, 7.29, 6.83 mg/L, respectively. blood glucose levels concentrations 0, 2.65, 4.30, 6.97, 11.3 56, 75, 79.6, 95, 95.6 mg/dl. Exposure gill damage form edema, lamella fusion, hyperplasia, lamellae epithelium swelling, filaments necrosis. Another occurs liver blockage vessels sinusoids, widening hepatic sinusoid gap, fat accumulation, necrosis hepatocytes.