Published Paper Details:

Iron is the fourth most abundant element by weight in earth�s crust, and is often a major constituent of soils especially clay soils and is trace element, required by all living organisms for many physiological functions, plays a major role in many biochemical processes, but in excess it causes toxicity. High iron content in water bodies of mountainous states is considered as one of the major factor, responsible for low productivity in aquaculture systems. But, till date comprehensive reports on the adverse effect of iron overload in aquatic organisms, especially cultured fishes are scanty. The present study was undertaken to investigate the adverse effects of iron overload in economically important aquaculture fish species C.mrigala. Three sub-lethal test concentration of iron (ferrous) i.e. During evaluation of physiological responses treatments with three iron ranges 4.5mgl-1,2.1 mgl-1, and 0.035mgl-1(control) combined with six exposure times at 0,6,12,24,48,72 and 120 h with three replicated were used . Blood cells and tissue samples of the control & exposed specimens were sampled at regular intervals of time to assess alterations in parameters like PCV, Hb ,RBC, Blood glucose, lysozyme activity increased significantly(p<0.05),whereas alkaline phosphate and NBT levels decreased significantly(p<0.05) with iron stress exposure duration. The observed physiological changes in the present study provide the most comprehensive insight of iron overload stress in C.mrigala.