Indian Journal of Science and Technology

Abstract

An attempt on individual toxicity of lead nitrate and barium chloride on the Indian major carps, catla, rohu and mrigal was carried out as they are the natural inhabitants of the perennial rivers network of India and neighbouring countries where pollutants are becoming a major stress factor for these commercially important edible fishes. For all the three major carps, the 96 hr LC50 and Sub Lethal Concentration (SLC) were in the order of Lead nitrate > Barium chloride. In the individual toxicity studies, the three carps exhibited a decreasing trend in total proteins and total lipids in all the test tissues but liver alone showed an increasing trend with reference to carbohydrate content.
Keywords: Catla, Rohu, Mrigal, Lead nitrate, Proteins, Carbohydrates and Lipids