Published in Scientific Papers. Series D. Animal Science, Vol. LXII, Issue 1
Written by Mariya CHUNCHUKOVA, Diana KIRIN, Dimitrinka KUZMANOVA
During summer 2018, 29 specimens of bleak (Alburnus alburnus (Linnaeus, 1758)) from Maritsa River were collected and examined with standard techniques for parasites. Helminth parasites were recorded in 24 bleak specimens (82.75%) from Maritsa River. Five species of parasites were identified: one trematode species (Allocreadium isoporum (Looss, 1984)), two cestode species (Caryophyllaeus brachycollis Janiszewska, 1951, Ligula intestinalis (Linnaeus, 1758)); one acantocephalan species (Pomphorhynchus laevis (Müller, 1776)) and one nematode species (Rhabdochona denudatа (Dujardin, 1845; Raillet, 1916). The analysis of the dominant structure of the found parasite species is presented to the component and infracommunities level. In the component community of Alburnus alburnus from Maritsa River C. brachycollis, P. laevis and, R. denudatа are corespecies. L. intestinalisis component parasite species and A. isoporum is accidental parasite species for the helminth communities of bleak. The infracommunities data was used to be fixed principal biotic indices. Bioindicator significance of established parasite species was discussed for ecological evaluation of the state of the studied freshwater ecosystem.New data for the helminths and helminth communities of bleak from Maritsa River are presented.
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