Vol. 3, Issue 1 (2018)
Effect of Sublethal copper exposure on glycogen, glucose and total lipid levels in (muscle and liver) fish, Oreochromis mossambicus (peters)
Author(s): Jagadeshwarlu R, Sunitha Devi G
Abstract: From an ecotoxicological point of view, any substance which substantially modifies population and community characteristics must be considered dangerous. A toxic metal influences the biota if its concentration in the environment is above a certain level. Certainly some metals, dangerous at high concentrations, are essential to the biota at low concentrations. In the present study, Oreochromis mossambicus were exposed to sub lethal concentrations (1/16, 1/12, 1/8 and 1/4th of 96 h LC50 value) i.e. 3mg/L, 4mg/L, 6mg/L and 12mg/L of Copper Sulphate for four different exposure periods of 10, 20, 30 and 40 days. The Glycogen, Glucose, Lipid levels in two different tissues such as Muscle and Liver and in blood were studied. Decreased tendency was observed in Glycogen, Lipid levels and an increased tendency was observed in Blood glucose levels in two different tissues and blood of fish exposed to Copper Sulphate over control. Glycogen and Lipid levels gradually decreased, Blood glucose levels gradually increased with increased exposure period and the increase was observed to be directly proportional to increased sub lethal concentrations.