Evaluation of biochemical changes in Clarias gariepinus adults exposed to aqueous and ethanolic extracts of Parkia biglobosa pods

Abstract

Clarias gariepinus adults were exposed to aqueous and ethanolic extracts of Parkia biglobosa pods (85 mg/L, 100 mg/L, 115 mg/L, 130 mg/L and 145 mg/L), respectively, in order to evaluate their effects on the biochemical parameters of exposed fish. There were significant increases (P < 0.05) in aspartate aminotransferase and alanine aminotransferase activities as well as in plasma glucose concentrations respectively. The activity of alkaline phosphatase changed in a non significant (P > 0.05) manner with increasing concentrations of both extracts. However, plasma total proteins concentrations increased significantly (P < 0.05) with increasing extracts concentrations in fish exposed to ethanolic extracts while non significant changes (P > 0.05) occurred in those exposed to aqueous extracts. Similarly, there were significant decreases (P < 0.05) in cholesterol concentrations with increasing extract concentrations in fishes exposed to the ethanolic extract while there were no significant changes (P > 0.05) in those exposed to aqueous extracts. These biochemical changes in exposed fish revealed that both extracts of Parkia biglobosa pods are toxic to Clarias gariepinus adults with non significant differences (P > 0.05) between their levels of toxicities.

Keywords: Clarias gariepinus, Parkia biglobosa pods, toxicity, biochemical parameters