Element content in cultured and wild sea bass (Dicentrarchus labrax) from the Adriatic Sea
1 University of Ljubljana, Faculty of Natural Sciences and Engineering, Department of Geology, Aškerčeva 12, 1000 Ljubljana, SLOVENIA
2 Dalmar d.o.o., Jadranska cesta 4, Pakoštan, CROATIA
3 Ruđer Bošković Institute, Bjienićka 54, Zagreb, CROATIA
The aim of this study was to determine the levels of potentially toxic elements in cultured and wild fish tissues and to assess their risk for human health. For this purpose, sea bass specimens (Dicentrarchus labrax) were sampled in selected fish farm and three other locations along the eastern Adriatic coast. Ranges of element concentrations in sea bass muscles were 1.60-4.46 ppm for As, 0.001-0.079 ppm for Cd, 0.14-49.10 ppm for Cr, 1.38-4.85 ppm for Cu, 0.11-1.31 ppm for Hg, 0.01-0.65 ppm for Pb and 21.9-136.0 ppm for Zn. Mean Cd, Cr, Cu, Hg, Pb, and Zn concentrations in commercially interesting cultured fish samples were below the permissible levels, while mean As values slightly exceed those limits. In wild fishes mean Cd, Cu, Pb and Zn concentrations were below the recommended limits, for As, Cr and Hg the mean values were higher. The smallest cultured sea bass samples showed As, Cr, Pb, and Zn concentrations exceeding the recommended limits but values decreased with fish size. Therefore, the metal concentrations in commercial fishes showed no threat for human consumption.
Key words: Element content / cultured and wild fish / sea bass / Adriatic Sea
© Owned by the authors, published by EDP Sciences, 2013
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