Published in Scientific Papers. Series D. Animal Science, Vol. LXII, Issue 1
Written by Dimitrinka KUZMANOVA, Mariya CHUNCHUKOVA, Diana KIRIN
During 2018, the first ecologoparasitologycal study of Squalius cephalus from Osym River, a tributary of Danube River, Bulgaria was made. In 20 specimens of examined common chub, 3 species of endohelminths are established (Ichtyocotylurus pileatus (Rudolphi, 1802) Dubois, 1937 Metacercaria; Caryophyllaeus brachycollis Janiszewska, 1951; Rhabdochona denudatа (Dujardin, 1845) Raillet, 1916). C. brachycollis and Rh. denudatа are autogenic species, whereas I. pileatus isallogenic species. I. pileatus is reported for the first time for the freshwater fish fauna of Osym River. Sq. cephalusis a new host record for I. pileatus in Bulgaria. The basic ecological characteristics and biotic indices of the parasite populations and communities are determined. The dominant structure of the endohelminth communities is presented on the level of the component community.
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