Biodiversity, Bioindication and Helminth communities of Abramis brama (Linnaeus, 1758) from the Danube River and Lake Srebarna, Bulgaria

Authors : Diana KIRIN, Vladimira HANZELOVÁ, Sonya SHUKEROVA, Dimitrinka KUZMANOVA

Pages : 727-733

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Publication Date : 2014-03-01

Article Type : Research Paper

Abstract :Biomonitoring from water of the River Danube and Srebarna Lake was performed using freshwater fish and their parasites and parasite communities as bioindicators. During 2013, 78 specimens of freshwater bream insert ignore into journalissuearticles values(Abramis brama insert ignore into journalissuearticles values(L., 1758); were examined with standard techniques for parasites. Three species of parasites insert ignore into journalissuearticles values(Gyrodactylus elegans Nordmann, 1832, Diplozoon paradoxum Nordmann, 1832 and Pomphorhynchus tereticollis insert ignore into journalissuearticles values(Rudilphi, 1809);); were fixed. The analysis of the dominant structure of the found taxa was presented to the level of the component communities. New parasite and host records were determined. All fixed parasite species are core for the parasite communities of examined fish. Concentration of heavy metals insert ignore into journalissuearticles values(Pb, Zn, Cu); in fish insert ignore into journalissuearticles values(muscle, liver, intestine and bones);, endohelminth species Pomphorhynchus tereticollis as bioindicators and bottom sediments were analyzed. Bioindicator significance of parasite species was studied. For an ecological evaluation of the situation of the analyzed freshwater ecosystems, principal biotic indices were fixed
Keywords : bioindication, Abramis brama parasite communities, heavy metals, Lake Srebarna, River Danube

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