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Conservation of freshwater fishes: options for the future
- 1.0164350 - UBO-W 20020001 RIV GB eng M - Monography Chapter
Lusk, Stanislav - Lusková, Věra - Halačka, Karel - Šlechta, Vlastimil - Šlechtová, Věra
Status and protection of species and intraspecific diversity of the ichthyofauna in the Czech Republic.
Conservation of freshwater fishes: options for the future. Oxford: Fishing News, 2002 - (Collares-Pereira, M.; Cowx, I.; Coelho, M.), s. 23-33. ISBN 0-85238-286-3
R&D Projects: GA AV ČR KSK6005114
Institutional research plan: CEZ:AV0Z6093917
Keywords : ichthyofauna * population diversity * genetic variability
Subject RIV: EH - Ecology, Behaviour
The ichthyofauna indigenous to the Czech Republic consists of four lamprey and 55 fish species. Of these, two lamprey and eight fish species are considered now absent. In recent years some of the previously lost species have reappeared either through natural migration (Acipenser ruthenus, Pelecus cultratus, Gymnocephalus schraetser) or reintroduction (Salmo slar). As a result of natural immigration from the Danube drainage basin, the indigenous ichthyofauna has been enriched by species new to the Czech Republic: i.e. Proterorhinus marmoratus, Stizostedion (Sander) volgensis, and Gymnocephalus baloni. According to the IUCN (1999) classification, 19 fish species, one wild form, Cyprinus carpio, and two lamprey species are endangered to different degrees. Recent investigations on intraspecific diversity has yielded data on the genetic variability in populations of Chondrostoma nasus (average variability, low interpopulation diversity), Vimba vimba (low genetic variability), Barbus barbus (high variability, interpopulation difference), Phoxinus phoxinus (high intra- and interpopulation variability), Alburnoides bipunctatus (low variability), Cobitis elongatoides (distinct differences connected with the level of ploidy nad hybridisation in different populations) and Salmo trutta m. fario (genetic characteristics resulting from human activities).
Permanent Link: http://hdl.handle.net/11104/0061571
Number of the records: 1