Assessing the efficacy of spring stocking of pikeperch (Sander lucioperca) into a eutrophic reservoir

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F24%3A00605293" target="_blank" >RIV/60077344:_____/24:00605293 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/24:43908012 RIV/60076658:12520/24:43908012

Výsledek na webu

<a href="https://doi.org/10.1080/10402381.2024.2333298" target="_blank" >https://doi.org/10.1080/10402381.2024.2333298</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/10402381.2024.2333298" target="_blank" >10.1080/10402381.2024.2333298</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Assessing the efficacy of spring stocking of pikeperch (Sander lucioperca) into a eutrophic reservoir

Popis výsledku v původním jazyce

The survival of stocked fish is one of the crucial problems of management measures. In April 2023, approximately ten thousand 1-yr-old pond-reared pikeperch fry were marked and stocked into the small, eutrophic Hubenov Reservoir in the Czech Republic. Later that year, in August, the abundance of the stocked pond-reared pikeperch in the reservoir was estimated through beach seining, electrofishing, and gillnetting. Gillnet results showed that pikeperch avoided pelagic and deeper benthic habitats. Consequently, the most quantitative results were obtained by night beach seining. Our captures indicated that approximately 688 stocked pikeperch individuals were present in the entire reservoir in August, representing 6.5% of the stocked fish. These pikeperch displayed good growth and condition, primarily feeding on European perch fry, the most abundant 0+ fish in the reservoir. Our findings elucidate a relatively high mortality of 1-yr-old pond-reared pikeperch in the reservoir after spring stocking. Despite this mortality, the stocked pikeperch represented 85% of all 1-yr-old pikeperch in the reservoir. This highlights the effectiveness of spring stocking as a valuable tool for supporting the pikeperch population in reservoirs, emphasizing the stocking of an adequate quantity of pond-reared fish to compensate for the observed mortality.

Název v anglickém jazyce

Assessing the efficacy of spring stocking of pikeperch (Sander lucioperca) into a eutrophic reservoir

Popis výsledku anglicky

The survival of stocked fish is one of the crucial problems of management measures. In April 2023, approximately ten thousand 1-yr-old pond-reared pikeperch fry were marked and stocked into the small, eutrophic Hubenov Reservoir in the Czech Republic. Later that year, in August, the abundance of the stocked pond-reared pikeperch in the reservoir was estimated through beach seining, electrofishing, and gillnetting. Gillnet results showed that pikeperch avoided pelagic and deeper benthic habitats. Consequently, the most quantitative results were obtained by night beach seining. Our captures indicated that approximately 688 stocked pikeperch individuals were present in the entire reservoir in August, representing 6.5% of the stocked fish. These pikeperch displayed good growth and condition, primarily feeding on European perch fry, the most abundant 0+ fish in the reservoir. Our findings elucidate a relatively high mortality of 1-yr-old pond-reared pikeperch in the reservoir after spring stocking. Despite this mortality, the stocked pikeperch represented 85% of all 1-yr-old pikeperch in the reservoir. This highlights the effectiveness of spring stocking as a valuable tool for supporting the pikeperch population in reservoirs, emphasizing the stocking of an adequate quantity of pond-reared fish to compensate for the observed mortality.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/QK23020002" target="_blank" >QK23020002: Produkce násad candáta obecného, jejich adaptibilita a optimalizace jejich vysazování do volných vod.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Lake & Reservoir Management

ISSN

1040-2381

e-ISSN

2151-5530

Svazek periodika

40

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

196-204

Kód UT WoS článku

001215958600001

EID výsledku v databázi Scopus

2-s2.0-85191809761