Návratnost, růst a pohyb divokých, v rybníce a v sádce odchovaných lipanů podhorních (Thymallus thymallus L.) vysazených do přirozeného toku

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12610%2F08%3A00008937" target="_blank" >RIV/60076658:12610/08:00008937 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Recapture, growth and movement of wild, pond- and hatchery-reared European grayling (Thymallus thymallus L.) released in small stream

Popis výsledku v původním jazyce

Recapture, growth and migration of two-year old grayling fry (stock) and one-year old resident wild grayling were assessed on basis of individually recaptured and marked fish after 168 days in 12 experimental stretches of the river Blanice vodňanská. Onepart of artificial-reared fish was reared in stew pond (hatchery) (feed on pellets) and the second sort of fish was reared in pond with natural food. The highest recapture (40 %) had wild grayling in control river stretches without stocked hatchery fish. Somewhat lower recapture (28 %) had wild fish in experimental stretches. In comparison with both groups of fish, wild fish carried out in stew pond and natural pond had significantly lower recapture (14 % and 16 %, respectively). Differences in specific grow rate and in down-stream and up-stream migrations were not significant during experimental time among any group. Wild grayling stayed in experimental stretches significantly more than grayling reared in pond.

Název v anglickém jazyce

Recapture, growth and movement of wild, pond- and hatchery-reared European grayling (Thymallus thymallus L.) released in small stream

Popis výsledku anglicky

Recapture, growth and migration of two-year old grayling fry (stock) and one-year old resident wild grayling were assessed on basis of individually recaptured and marked fish after 168 days in 12 experimental stretches of the river Blanice vodňanská. Onepart of artificial-reared fish was reared in stew pond (hatchery) (feed on pellets) and the second sort of fish was reared in pond with natural food. The highest recapture (40 %) had wild grayling in control river stretches without stocked hatchery fish. Somewhat lower recapture (28 %) had wild fish in experimental stretches. In comparison with both groups of fish, wild fish carried out in stew pond and natural pond had significantly lower recapture (14 % and 16 %, respectively). Differences in specific grow rate and in down-stream and up-stream migrations were not significant during experimental time among any group. Wild grayling stayed in experimental stretches significantly more than grayling reared in pond.

Druh

D - Stať ve sborníku

CEP obor

GL - Rybářství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Resource Management. Natural, human and material resources for the sustainable development of aquaculture

ISBN

978-83-60111-30-7

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

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Název nakladatele

European Aquaculture Society

Místo vydání

Krakow, Polsko

Místo konání akce

Krakow, Polsko

Datum konání akce

15. 9. 2008

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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