Published in Scientific Papers. Series D. Animal Science, Vol. LXVIII, Issue 2
Written by Radoslava ZAHARIEVA, Petya ZAHARIEVA, Diana KIRIN
This study aims to monitor the state of the water of the Kayaliika River, part of the Maritsa River basin in Bulgaria, based on the diversity of parasites and indicators of parasite fish communities. For the purpose of the study, 45 specimens of bleak, Alburnus alburnus (Linnaeus, 1758), were caught in the autumn of 2024 from the lower reaches of the Kayaliika River. Infection was found in 77.78% of the studied bleak specimens. The following ecological indices were calculated: mean intensity (MI), mean abundance (MA), prevalence (P%), Brillouin’s diversity index (HB), Pielou’s evenness index (E), and Simpson’s dominance index (C). The circulation of the parasite flow in the studied biotope of the river ecosystem was monitored.
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