Original title: Fáze "ontogeneze" Mušovské nádrže VD Nové Mlýny - těžba ryb a kondiční parametry cejnka malého
Translated title: Phases of the ontogenesis of the Mušov Reservoir of the waterwork Nové Mlýny - fish yield and condition parameters of silver bream (Blicca bjoerkna)
Authors: Baruš, Vlastimil ; Peňáz, Milan ; Prokeš, Miroslav
Document type: Papers
Conference/Event: Česká ichtyologická konference /5./, Brno (CZ), 2002-09-25 / 2002-09-26
Year: 2002
Language: cze
Abstract: [cze] [eng]
V Mušovské nádrži (revír Dyje 7) byly analyzovány úlovky kapra obecného a délko-hmotnostní vztah u cejnka malého (1981-2001). Výsledky dokumentují, že nádrž je ve fázi stabilizované produkce. Overall yields of the carp and of the non-preferred group of coarse "other fish" exhibited in the Mušovská nádrž Reservoir (Fishing ground MRS Dyje 7) significant changes during 1981-2001. The decrease of yield during 1996-1999 is significantly correlated with a decreased fishing pressure (number of fishing visits per year and hectare of fishing ground) while it insignificantly correlates with the quantity of annually stocked carps. The length/weight relationship of the silver bream, if comparing the values from 1980 with those from 1996, exhibit a significant drop. It was concluded, that the reservoir is actually in a phase of stabilised production and characteristic by a feeding competition between the carp as a preffered game fish and the coarse fishes. Also an increased predation by wells exhibited on the non-predatory fishes including the stocked carp can not be excluded.
Keywords: Blicca bjoerkna; River Dyje
Project no.: CEZ:AV0Z6093917 (CEP), IAA6093104 (CEP)
Funding provider: GA AV ČR
Host item entry: 5. Česká ichtyologická konference, ISBN 80-7157-614-X

Institution: Institute of Vertebrate Biology AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0061596

Permalink: http://www.nusl.cz/ntk/nusl-24886


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