Published in Scientific Papers. Series D. Animal Science, Vol. LXIV, Issue 2
Written by Petya ZAHARIEVA, Diana KIRIN
In 2020, 30 specimens of common nase (Chondrostoma nasus Linnaeus, 1758) were caught. A total of 6 samples of water and sediments were collected from the Danube River, near the Kudelin village, north western Bulgaria. Tissues and organs of common nase, water and sediments from the Danube River ecosystem for cadmium (Cd) content were studied. In the samples of tissues and organs of common nase, the highest concentrations of Cd were found in the liver (CCd = 1.21 ± 0.39 mg.kg-1 wet weight). The concentrations of cadmium decrease in the order: liver > skin > muscles. The study presented the bioconcentration factor and the linear correlation coefficient of Spearman. The study compared the norms specified in national and international documents with obtained concentrations for cadmium in tissues and organs of common nase and water and sediments.
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