The Effect of Copper and Lead on Oreochromis niloticus and Cyprinus carpio in Blood Ion Level

Abstract

In this study, the effects of concentration and exposure time of Cu and Pb on plasma levels of Na+, K+, Ca++, Mg+ and C-l of Cyprinus carpio and Oreochromis niloticus were tested at varying concentrations of metal in the medium and over different periods of time. Fish were exposed to 0.1, 0.5 and 1.0 mg/L Cu and Pb over periods of 10 and 20 days and ion distributions of copper and lead were determined using spectrophotometric method. Plasma ion (Na+, K+, Ca++, Mg and Cl-) levels effected by Pb and Cu. In both species, blood serum Na + levels decreased after periods tested at exposure to copper while increasing at exposure lead. O. niloticus blood serum K + levels increased with effect of Cu and Pb concentrations. In C. carpio Cu concentrations blood serum K+ levels increased while decreased with effect of Pb concentrations after 10 and 20 days of exposure. Ionize Ca++ levels of blood serum in O. niloticus decreased