Effect of Sublethal Concentrations of Cadmium on some Physiological Alterations in Liza abu Fish

Abstract

The aim of this study was to obtain a holistic view of sublethal toxic responses of fish ( Liza abu ). After exposure to ( 0.1 & 0.5 ) mail- Cd in water for 7, 15, 30 days. The results h d that the distribution of Na'b and Ca+2 concentrations of s owe k+ ja jjjs Gills, but not results alteration of K concentration t e g .

Also these motels included chloride cells proliferation and caused the increase of chloride cells number comparison with control. Histological alternation showed hyperplasia and hypertrophy and earning of secondary lamellae.