Published in Scientific Papers. Series D. Animal Science., Vol. LVI
Written by D. KIRIN, V. HANZELOVÁ, S. SHUKEROVA, S. HRISTOV, Ľ. TURČEKOVÁ, M. SPAKULOVA, T. BARCIOVÁ
Study of biodiversity of freshwater fish and parasite communities from the River Arda, southern Bulgaria characterized by heavy metal pollution was carried out. Investigation of the actual state of the water pollution from an aspect of loading environment with heavy metals and their impact on fish, fish parasites and biodiversity of water organisms in general was accomplished. Assessment of fish parasites as potential bioindicators of water pollution was made. For examinations were used standard methods and techniques. The studies, belonging to 65 specimens of fishes representing 8 species during the three seasons were presented. The dominant structures of helminth communities are characterized. The model of fish species chosen for examination of the heavy metal content in this study were the European perch, Perca fluviatilis (L., 1758) and Macedonian vimba, Vimba melanops (Heckel, 1837) of the Arda River. The contents of heavy metals (Pb, Zn, Mn and Cu) (mean concentration, bioconcentration factors) in the tissues and organs of fish species and fish parasites (Eustrongylides excisus (Jägerskiöld, 1909) and Caryophyllaeus sp.) were discussed. The studies carried out could be used in various monitoring systems for screening the pollution on the water environment and the organisms inhabiting the anthropogenous ecosystems.
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biodiversity
