KELANGSUNGAN HIDUP, PERTUMBUHAN DAN TINGKAT KONSUMSI OKSIGEN IKAN PATIN (Pangasius sp.) YANG TERPAPAR LIMBAH CAIR PABRIK KELAPA SAWIT

Abstract

The current research aimed to know the lethal and sub-lethal toxicities of industrial  palm oil liquid waste on catfish. The reseach was carried out from May to June 2013 at Basic Fishery Laboratory, Aquaculture Study Program, Faculty of Agriculture, Sriwijaya University, Indralaya. This research used a Completely Randomized Design (CRD) with 7 treatment levels and three replications. At lethal experiment, treatment levels tested were without the addition of liquid waste (A), 13.18 mL.L^-1 (B), 13.89 mL.L^-1 (C), 14.63 mL.L^-1 (D), 15.4 mL.L^-1 (E), 16.21 mL.L^-1 (F),  and 17.06 mL.L^-1 (G). For sub-lethal, treatment levels tested were without the addition of liquid waste (A), 0.5% x 96-h LC₅₀ (B), 1% x 96-h LC₅₀ (C), 6.25% x 96-h LC₅₀ (D), 12.5% x 96-h LC₅₀ (E), 25% x 96-h LC₅₀ (F), and 50% x 96-h LC₅₀ (G). The result of probit analysis shows 96-h LC₅₀ value is 14.12 mL.L^-1, positive linier relationship between mortality and concentration of palm oil liquid waste was found (r = 0.98 **). For the result of  sub lethal concentrations of  palm oil liquid waste ≤ 1% x 96-h LC₅₀ had no effect (p> 0.01) while concentration of ≥ 6.25% x 96-h LC₅₀ had very significant effect on the survival, growth and oxygen consumption rate of catfish.

Key words : Toxicity, Industrial  Palm Oil Liquid Waste, Catfish, 96-h LC₅₀