Sublethal effects of the Water -Soluble Fractions of Virgin Diesel Oil on some Physiological Parameters of Clarias Gariepinus Juveniles.

This study was undertaken to evaluate the sublethal effects of the water-soluble fractions of virgin diesel oil on some physiological parameters of C. gariepinus juveniles. The mean weight of C.gariepirws Juveniles weight of l.61±1.86g, total length of 9.5± 10.5cm and standard length of 11.0±l2.5cm were exposed to sublethal concentrations of 0.58 ml/L, 0.29 ml/L, 0.14 ml/L, 0.07 ml/L, 0.04 ml/L and control 0.00 ml/L. There were significant differences at (P<0.05) on the different levels of sublethal concentrations.The tissues include.; gills, liver and intestine. The alterations considered include; the gills; inflammation, hyperplasia, fusion, lamella aneurism, epithelial lifting, abrasion and necrosis, in the liver, there was lesions,1 and:inflammation, and also alterations of the intestine were mainly sloughing of the intestinal villi and intestinal rhueosa. It was concluded that contamination of water-soluble fractions of virgin diesel oil in any water body or aquatic environment can induce several histopathological alterations in the tissues of Clarias gariepimisjvivtnWz.