Acute toxicity of Profenophos concentration on mortality and behaviour of freshwater fish; Channa orientalis from river Shivan, Dist-Nandurbar (M.S

Pesticides are toxic to aquatic organisms which are important components of food chain such as fishes. Fishes are important sources of protein in Nation’s diet. So a thorough understanding of pollutant effect on fishes would be rewarding for fish conservation and fishery development. Fresh water fishes, Channa orientalis were exposed, in the laboratory to different concentrations of organophosphorous pesticide, Profenophos in aquarium containing 5 liters of water for up to 96 hours. Both behavior and death were monitored during the exposure. The toxicity test of Profenophos to fresh water fishes, Channa orientalis was carried out by Probit analysis method given by Finney. The LC10 and LC50 values calculated for 24,48,72 & 96 hours. The LC50 values decrease with increasing exposure time. Behavior changes or death were seen at concentrations as low as 15 PPM. Keywords : Channa orientalis, Acute toxicity, Profenophos REFERENCES Anderson R.V. (1977) Concentration of Cadmium, copper lead and Zink in thirty five genera of freshwater macroinvertebrates from the Fox River. Illinois and Wisconsin Bulletin of Environmental contamination and toxicology.18:345-349. Banik, S, S. Khakraborty, J.R. Chaudhary (1996) : Hemolytic anemia in Anabus testudineus with reference to endosulfan. Uttar Pradesh J.Zool.16:87-88. Bradbury S.P. Jole R.Coates, James m Mekim (1984): Differential toxicity and uptake of two Fenvelrate formulation in fat head minnows (Pimples promlas) Environ.Toxicol.Chem-4,533-541. Eilser R (1970): Latent effects of insecticides intoxication to marine mollusks. Hydrobiologia,36, (3-4):345-352. Finney, D.J. (1971) : Probit Analysis Cambridge Univ. Press, London, England Hart, W. B., P. Doudoroff and J. Greenbank (1945) : The evolution of toxicity of industrial waste, chemicals and other substances to fresh water fish. Water control laboratory, Atlantic refining Co.Philadelphia, 317+(14). Holden, A.V.(1972) : The effects of pesticides on the life in fresh water.Proc.R.Soc.,180:383-394. Mawdesley, A.E. (1971) Toxic chemicals, the risk of fish.. New Sci., 49:74-75. Laxma Reddy B and Benarjee G. (2013). An intestinal histopathology of trematode infected fish, Channa striatus. Biolife 2013;1(1); 29-31. Nimmo D.R., Bahner L.H. (1976): Metals pesticides and PCHS toxicities to shrimp singly and in combination. In Eusterine Process, vol. uses, stress and adaptation to the estuary PP.523,Academic Press, New York Salyi, G., G. Csaba (1994); Pyrethroides poisoning of fish: Care repent and review article. Magyor Allatorvosk Lapia, 49:664-670. Sampath, K., Elango, P. and Thanalaxmi, S (1992): Effects of carbonyl (sevin) on the carbohydrate metabolism of the common frog Rana tigrina,Environ. Ecol. 10(2): 278-281. Sangeetkumar varma, Varma, K; Pathak, S and Anil Kumar (1990): Effects of falling environmental temperature on the lipid content of the fat body, Rana tigrina, Environ. Ecol. 8(1), 509-511. Saxena, K.K. and P. Gupta (2003): Effect of permrthrin on the activities of acid and alkaline phosphomonoesterases in a fresh water fish Channa punctatus. National Symposium of Biochemical Science, Health and Environmental aspects, 477-479. Stratton, G.W. (1987): The effect of pesticides and heavy metals towards photography microorganisms.Rev.Environ.Toxicol.3, 71-147. &nbsp