EVALUASI TOKSISITAS INSEKTISIDA TERHADAP IKAN NILA (Oreochromis niloticus)

(Evaluation Of Insecticide Toxicity To Nile (Oreochromis niloticusf

Abstract

Evaluation of acute toxicity of endosulfan insecticide in natural water environment  was conducted to know its potential  negative  effect to the Nile  (Oreochromis  nitoticusi. Using static toxicity test method, the acute toxicity of7 endosulfan concentration  levels were tested afterstandardized for 96 hours in the solution of water from river, pond and paddy field. Four replications  were implemented into those treatment and ground water was being  a control. The size of Nile used in the examination was 3-5  gr/tails in weight. Result of the examination was revealed by medium lethal concentration value LC50   -96  hours.  The result indicated  that insecticide of endosulfan in the  solution  of water from three kind environment had the high toxicity effection the Nile. The values of LC50    -96 hours were 6.00 mg/Lin   the river water, 4.61  mg/Lin   the pond water and4.51   mg/Lin   the paddy field water, respectively.   The difference of those values  was caused by the difference  of water quality such as total  hardess,  organic  matters, total  and suspended  solid,  and endosulfan  residue  in the water.