Accumulation of some pollutants (Malathion and cadmium) and biochemical alterations in muscles of Nile tilapia "Oreochromis niloticus

Mohamed Yahya Mohamed Aly Na

Abstract

 Accumulation of some pollutants (Malathion and cadmium) and biochemical alterations in muscles of Nile tilapia "Oreochromis niloticus Mohamed Yahya Mohamed Aly National Institute of Oceanography and Fisheries – Internal Water Branch Egypt   The aim of this study was to estimate the effects of sublethal concentrations of some pollutants (cadmium and Malathion) on the levels of glucose; total porten, cholesterol, ALT and ast enzyme in the serum blood and its accumulation in Nile tilapia fingerling muscles as a long experimentally study.  Oreochromis niloticus were exposed to Malathion and cadiumum to determine the lethal concentration (LC50) value and effects of sub-lethal concentrations on biochemical parameters. The LC50 value was registered as 1.06 and16.8 mg/l of Malathion and cadiumum. Triplicate groups of fish and a control group (30 fish/group) were exposed to sublethal concentrations (20-30% of LC50-96 hr) values of cadmium and Malathion for a period of 35 days. The results showed that variation in biochemical parameters which is an adaptive response change of Nile tilapia due to sublethal exposure of some pollutants.   The aim of this study was to estimate the effects of sublethal concentrations of some pollutants (cadmium and Malathion) on the levels of glucose; total porten, cholesterol, ALT and ast enzyme in the serum blood and its accumulation in Nile tilapia fingerling muscles as a long experimentally study.  Oreochromis niloticus were exposed to Malathion and cadiumum to determine the lethal concentration (LC50) value and effects of sub-lethal concentrations on biochemical parameters. The LC50 value was registered as 1.06 and16.8 mg/l of Malathion and cadiumum. Triplicate groups of fish and a control group (30 fish/group) were exposed to sublethal concentrations (20-30% of LC50-96 hr) values of cadmium and Malathion for a period of 35 days. The results showed that variation in biochemical parameters which is an adaptive response change of Nile tilapia due to sublethal exposure of some pollutants.