Published in Scientific Papers. Series D. Animal Science, Vol. LXIII, Issue 2
Written by Petya ZAHARIEVA, Diana KIRIN
The study aimed to present the results of investigations on the content of heavy metals/metalloids (Cu, Cd and As) in tissues and organs (liver, skin and muscles) of Alburnus alburnus (Linnaeus, 1758), and in waters and sediments of the Danube River (Kudelin, Vidin), Bulgaria. The highest Cd contents were found in liver samples (0.80 ± 0.56 mg.kg-1), followed by contents in skin samples (0.21 ± 0.15 mg.kg-1) and muscle (0.08 ± 0.07 mg.kg-1). The highest As contents were found in liver (28.14 ± 10.98 mg.kg-1) and skin (14.36 ± 11.45 mg.kg-1), and the lowest in muscle (2.14 ± 0.64 mg.kg-1). The highest content of Cu was established in liver samples (7.32 ± 2.39 mg.kg-1), followed by this in the skin (3.78 ± 2.24 mg.kg-1) and muscles (1.29 ± 1.03 mg.kg-1). The highest values for As contents (0.07 ± 0.05 mg.l-1) were determined in surface waters, and the highest values for Cu contents were determined in sediments (204.09 ± 121.05 mg.kg-1). The results of studies on the circulation of the studied elements in the water-sediment-tissue and organs of A. alburnus system were analysed.
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