Authors : Gamila A.M. Kotb, Sherif H. Abd-Alrahman, Ahmed A. Gh. Farag and Manal E.A. Elhalwagy
Abstract: Chronic toxicity and bioacumulation of diclofop-methyl (Iloxan 36% EC) in tilapia fish (Oreochromis niloticus was investigated. Fish was exposed to two sub-lethal concentrations 1/10 (0.19 mg L-1, low concentration) and 1/3 (0.63 mg L-1, high concentration) of determined 96 h-LC50, 1.89 mg L-1 for 28 days. Results indicated that the bioaccumulation in whole fish was more than muscle. Results of biochemical parameters were indicated that alanine aminotransferases, alkaline phosphatase, acetyl-cholinesterase activities, albumin and glucose levels were increased significantly with both exposed concentrations comparing to control. However, significant increases were shown in aspartate aminotransferases and total protein levels with low concentration. On the other hand, high concentration caused significant increase in urea levels. Meanwhile, creatinine levels were decreased in both exposed concentrations. Noticeable changes in antioxidants biomarkers were recorded, a reduction in SH-protein level and an elevation in lipid peroxidation biomarker were recorded in plasma after treatment with two concentrations.
Gamila A.M. Kotb, Sherif H. Abd-Alrahman, Ahmed A. Gh. Farag and Manal E.A. Elhalwagy, 2013. Biochemical Effects of the Herbicide Diclofop-Methyl Bioaccumulation in Freshwater Fish (Oreochromis niloticus). Journal of Animal and Veterinary Advances, 12: 1016-1020.