The Reophylic fish species in the Teteriv river basin
Journal Title: Naukovyi visnyk Chernivetskoho universytetu. Biolohiia (Biolohichni systemy) - Year 2018, Vol 10, Issue 2
Abstract
Fishes species composition of the Teteriv River Basin is described. 18 localities of Teteriv, Irsha, Zdvyzh, Hnylopiat Rivers and the flooded lake were researched in 2010-2018. Also the scientific collection of the National Museum of the Natural History of the National Academy of Sciences of Ukraine for this region and literary data have been analyzed. 33 fish species were noted. Four of them are first reported for this region: Romanogobio belingi (Slastenenko, 1934), Hypophthalmichthys molitrix (Valenciennes, 1844), Perccottus glenii Dybowski, 1877, Knipowitschia caucasica (Berg, 1916). Besides 28 species were registered for the river basin system. In our investigation are dominated Rhodeus amarus (Bloch, 1782) – 34,08 %, Alburnus alburnus (Linnaeus, 1758) – 13,22 % and Leucaspius delineatus (Heckel, 1843) – 12,62 %. 12 species (12,76 %) of total species number belong to the reophylic group. Its predominating population’s parts are tolerable according to the quantity and populations size structure (the presence of both small young individuals and elder age groups). Four red-book species were found in the studied waterbodies: Alburnoides rossicus Berg, 1924 (1,57 %), Leuciscus leuciscus (Linnaeus, 1758) (2,86 %), Carassius carassius (Linnaeus, 1758) (0,17 %) and Lota lota (Linnaeus, 1758) (0,17%). Rhodeus amarus (Bloch, 1782), Romanogobio belingi (Slastenenko, 1934), Cobitis taenia Linnaeus, 1758 and Sabanejewia baltica Witkowski, 1994 are listed in Resolution 6 of the Habitat Directive of Bern Convention. Finding of these species is important for the organization of Emerald Network in Ukraine. Moreover four alien fish species were noted: Carassius gibelio (Bloch, 1782), Pseudorasbora parva (Temminck & Schlegel, 1846), Perccottus glenii Dybowski, 1877, Hypophthalmichthys molitrix (Valenciennes, 1844). Part of alien fishes seizes only 2,53 % of total fish fauna based on our investigation. The first three alien species are widespread in the Teteriv basin. A changing of hydrological regime in the Teteriv River basin will affect adversely on the native reophylic fish species community and promote spreading of alien fish species.
Authors and Affiliations
Yu. Kutsokon, A. Roman
Keywords
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