This study was conducted to measure the concentration of several elements (Cd, Pb, Cu, and Zn) in organs of Coot, Fulica atra, and Mallard, Anas platyrhynchos, in order to: (1) determine the significant between metal concentrations in different organs (kidney, liver, pectoral muscle, and feather), (2) to evaluate species differences in metal exposure and accumulation, and (3) to study gender-related trends in metal accumulation. The metal concentrations in organs of F. atra and A. platyrhynchos decreased in the following order: Zn > Cu > Pb > Cd. These results revealed that there were no significant differences between males and females except for Cu in liver and feather, and Pb in kidney.

This study was conducted to measure the Cd, Pb, Cu, Zn, Cr, Co, Ni, and Fe concentrations in organs of Cyprinus carpio and Hypophthalmichthys molitrix, in Zabol Chahnimeh reservoirs, Iran. The highest Pb, Cu, Co, Ni, and Fe concentrations in both fish species were observed in the gill of C. carpio at 0.70, 3.7, 0.7, 0.8 and 31.2 µg/g, respectively; while the highest concentrations of Cd, Zn, and Cr were found in the gill of H. molitrix at 0.13, 22.5, and 0.5 µg/g, respectively. The maximum allowable fish consumption rate for an adult person (71.5 kg body weight) were 10.64, 0.677, 0.558, 1.17, and 0.92 kg/day based on Cd, Cu, Cr, Zn, and Fe levels respectively. Results showed that the Cd, Cu, Zn, and Pb (except of Pb in H. molitrix) concentrations in the muscle of both fish species are below levels of concern for human consumption.

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Citation: Majnoni F., Mansouri B., Rezaei M., Hamidian A.H. 2013 -Metal concentrations in tissues of common carp, Cyprinus carpio, and silver carp, Hypophthalmichthys molitrix from the Zarivar Wetland in Western Iran -Arch. Pol. Fish. 21: 11-18.Abstract. The aim of this paper was to monitor the concentrations of mercury (Hg), cadmium (Cd), lead (Pb), copper (Cu), and nickel (Ni) in the gills, scales, and muscles of two fish species, common carp, Cyprinus carpio L., and silver carp, Hypophthalmichthys molitrix (Val.), from the Zarivar Wetland in Western Iran, and to identify any relationships between the species. The metal concentrations in the tissues of common carp and silver carp decreased in the following sequence: Cu > Pb > Hg > Ni > Cd. The results indicated no significant differences between the males and females of either fish species (P > 0.05). The results also showed that there were significant correlations (P < 0.05) between fish total length and weight and concentrations of Cd, Pb, and Cu in the different muscle tissues examined.