Influence of geographic origin on post-stocking survival and condition of European grayling (Thymallus thymallus) in a small river

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F18%3A43897347" target="_blank" >RIV/60076658:12520/18:43897347 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.alr-journal.org/articles/alr/full_html/2018/01/alr180028/alr180028.html" target="_blank" >https://www.alr-journal.org/articles/alr/full_html/2018/01/alr180028/alr180028.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/alr/2018019" target="_blank" >10.1051/alr/2018019</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of geographic origin on post-stocking survival and condition of European grayling (Thymallus thymallus) in a small river

Popis výsledku v původním jazyce

The post-release survival and condition of 1+ year old European grayling Thymallus thymallus reared in a local (Husinec) and two 250-300 km distant, hatcheries (Pardubice and Hyncice) were evaluated by the recapture of tagged fish five months after release into the Blanice River, Czech Republic, the fish population of which was depleted by cormorant predation during several previous winters. The fish were marked using Visible Implant Elastomer tags and released into six sites along the river in May 2014: 100 locally sourced fish and 100 of a strain from a distant source per site. Significantly higher recapture of Husinec (33%) than Pardubice (20%) was found at one site but was offset by results in the remaining two sites into which they were stocked. Significantly higher site fidelity was shown by Husinec (12%) than Hyncice (7%) fish in the three sites. Lower initial weight and condition factor of the Husinec fish was equal to or higher than fish from the distant hatcheries at recapture. Some differences in final weight, length, and condition factor were found among groups regardless of release site. Lower recapture rate, growth, and condition were displayed in fish released into the three downstream sites (Husinec 1 and Hyncice). The results indicated the potential for successful use of non-autochthonous stock for grayling population recovery.

Název v anglickém jazyce

Influence of geographic origin on post-stocking survival and condition of European grayling (Thymallus thymallus) in a small river

Popis výsledku anglicky

The post-release survival and condition of 1+ year old European grayling Thymallus thymallus reared in a local (Husinec) and two 250-300 km distant, hatcheries (Pardubice and Hyncice) were evaluated by the recapture of tagged fish five months after release into the Blanice River, Czech Republic, the fish population of which was depleted by cormorant predation during several previous winters. The fish were marked using Visible Implant Elastomer tags and released into six sites along the river in May 2014: 100 locally sourced fish and 100 of a strain from a distant source per site. Significantly higher recapture of Husinec (33%) than Pardubice (20%) was found at one site but was offset by results in the remaining two sites into which they were stocked. Significantly higher site fidelity was shown by Husinec (12%) than Hyncice (7%) fish in the three sites. Lower initial weight and condition factor of the Husinec fish was equal to or higher than fish from the distant hatcheries at recapture. Some differences in final weight, length, and condition factor were found among groups regardless of release site. Lower recapture rate, growth, and condition were displayed in fish released into the three downstream sites (Husinec 1 and Hyncice). The results indicated the potential for successful use of non-autochthonous stock for grayling population recovery.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Aquatic Living Resources

ISSN

0990-7440

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

10/2018

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

000446960900003

EID výsledku v databázi Scopus

2-s2.0-85054975831