Impact od Eurasian otter disturbance on condition and growth rate of common carps in fishponds (preliminary results)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60818557%3A_____%2F09%3A%230000003" target="_blank" >RIV/60818557:_____/09:#0000003 - 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

Impact od Eurasian otter disturbance on condition and growth rate of common carps in fishponds (preliminary results)

Popis výsledku v původním jazyce

In fishpond areas conflict between otter protection and fisheries is common phenomenon. According to fisherman, otters cause high economic damage both by consuming the fish and also by their disturbance in the over-wintering period resulting in loss of condition and higher predisposition of fish to diseases. In autumn 2007, 1 000 individually tagged Common carps were stocked into five different fishponds located in the Czech-Moravian Highlands in the Czech Republic. The visitation rate of fishponds by otters was monitored in subsequent winter period and thereafter all survived fish were stocked into one fishpond for the vegetation period. The condition and growth rate of survived fish was compared with the visitation rate of different fishponds by otters. The preliminary results show that the otter disturbance has the effect on condition of over-wintered carps. Moreover highly disturbed carps had significantly slower growth rate in subsequent vegetation period.

Název v anglickém jazyce

Impact od Eurasian otter disturbance on condition and growth rate of common carps in fishponds (preliminary results)

Popis výsledku anglicky

In fishpond areas conflict between otter protection and fisheries is common phenomenon. According to fisherman, otters cause high economic damage both by consuming the fish and also by their disturbance in the over-wintering period resulting in loss of condition and higher predisposition of fish to diseases. In autumn 2007, 1 000 individually tagged Common carps were stocked into five different fishponds located in the Czech-Moravian Highlands in the Czech Republic. The visitation rate of fishponds by otters was monitored in subsequent winter period and thereafter all survived fish were stocked into one fishpond for the vegetation period. The condition and growth rate of survived fish was compared with the visitation rate of different fishponds by otters. The preliminary results show that the otter disturbance has the effect on condition of over-wintered carps. Moreover highly disturbed carps had significantly slower growth rate in subsequent vegetation period.

Druh

O - Ostatní výsledky

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

<a href="/cs/project/SP%2F2D3%2F209%2F07" target="_blank" >SP/2D3/209/07: Rybniční hospodaření respektující strategii udržitelného rozvoje a podporu biodiverzity</a><br>

Návaznosti

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

Rok uplatnění

2009

Kód důvěrnosti údajů

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