Published in Scientific Papers. Series D. Animal Science, Vol. LXVIII, Issue 1
Written by Petya ZAHARIEVA, Radoslava ZAHARIEVA, Diana KIRIN
This study aims to examine the component and infracommunity of the bleak, Alburnus alburnus (Linnaeus, 1758), from the freshwater ecosystem of the Mechka River, part of the Maritsa River basin, East Aegean region. For the study, 54 specimens of bleak were caught from the Mechka River - Parvomay biotope (Debar) in the autumn of 2024. The fish were examined for the presence of parasites using standard methods. Species from Trematoda, Acanthocephala, and Nematoda were identified. Representatives of Acanthocephala dominate. The following indices were examined: Brillouin’s diversity index (HB), Pielou’s evenness index (E), and Simpson’s dominance index (C). The studied biotope is a new habitat for the identified bleak parasites.
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