Abstract
According to recent data, fish fauna of the Oster River basin numbers 21 species, including two introduced species: Perccottus glenii and Pseudorasbora parva . 17 species of fish were registered in the lower section of the river (4 of them for the first time), 21 species were found in the middle section (12 of them were not previously noted for this section) and only 11 species were found in the upper section (6 species were not previously noted for this section). Six species – Pseudorasbora parva , Misgurnus fossilis , Pungitius platygaster , Gymnocephalus cernu a , Babka gymnotrachelus and Proterorhinus semilunaris – are recordered in the Oster River for the first time. Fish population of the lower part differs by qualitative composition, primarily due to its link with the Desna River. Only 11 species were registered in three tributaries of the Oster River and in their basins. Nosivochka River has 6 species, including introduced Cyprinus carpio and Hypophthalmichthys molitrix . Five species were recorded in the Divytsia River basin and six species are found in the V’iunnytsia River. The most frequently caught species in the Oster River basin were Leucaspius delineatus and Rhodeus amarus (F = 75.0), Scardinius erythr ophthalmus and Tinca tinca (F = 66.7). Keywords : Ukraine, Oster River, Desna River, ichthiofauna, introduced species.
Highlights
The Oster River is a left tributary of the Desna River which flows within the Kozelets’, Nosivka, Nizhyn and Borzna regions of Chernihiv district
The aim of this work is to analyze the current state of fish fauna of the Oster River and its changes over the last 30 years, that occurred under the influence of significant changes in the hydrological regime of the river, as a result of land reclamation and anthropogenic loading
Six species are recorded in the Oster River for the first time: Pseudorasbora parva (Temminck & Schlegel, 1846), Misgurnus fossilis (Linnaeus, 1758), Pungitius platygaster (Kessler, 1859), Gymno cephalus cernua (Linnaeus, 1758), Babka gymnotrachelus (Kessler, 1857), Proterorhi nus semilunaris (Heckel, 1837), and probably Cyprinus carpio Linnaeus, 1758
Summary
The Oster River is a left tributary of the Desna River which flows within the Kozelets’, Nosivka, Nizhyn and Borzna regions of Chernihiv district. It is 226 km long [2] with the basin area of 2,950 km and the slope of 0.17 m/km. A big number of reclamation channels is integrated with it. The Oster River is connected with the Veresoch River (tributary of the Desna River) in the north by the reclamation channels of Smolianka swamp. In the south (at Kozelets’ town, see Figure), the Oster River is united with the Trubizh River (from the Dnieper River basin) by the reclamation chanal
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.