The role of supplementary feeding in food competition between common carp (Cyprinus carpio) and perch (Perca fluviatilis) in a pond culture

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12610%2F01%3A00003166" target="_blank" >RIV/60076658:12610/01:00003166 - 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

The role of supplementary feeding in food competition between common carp (Cyprinus carpio) and perch (Perca fluviatilis) in a pond culture

Popis výsledku v původním jazyce

Food composition, selectivity and competition between carp (Cyprinus carpio) and perch (Perca fluviatilis) were studied under conditions of pond farming technology with the application of wheat as a supplementary feed. Carp preferred feed wheat, which composed 52.7 - 65.7 % of food ingested. Positive selectivity was proved for copepods and chironomid larvae, whilst avoidance appeared for bioseston, rotifers, Bosmina longirostris, Daphnia galeata and many benthic invertebrates except above mentioned chironomids (Helobdella stagnalis, Hydracarina, Caenis robusta, Mystacides and Ceratopogonidae). Perch showed predatory (cannibalistic) feeding pattern with 83.9 - 92.6 % portion of small fish in the food bulk. Perch did not consume smallest food particles like bioseston and rotifers. Negative selectivity was proved also for copepods and small benthic animals like water mites and larvae of Caenis robusta, Mystacides, Chironomidae and Ceratopogonidae. On the other hand, bigger invertebrates (

Název v anglickém jazyce

The role of supplementary feeding in food competition between common carp (Cyprinus carpio) and perch (Perca fluviatilis) in a pond culture

Popis výsledku anglicky

Food composition, selectivity and competition between carp (Cyprinus carpio) and perch (Perca fluviatilis) were studied under conditions of pond farming technology with the application of wheat as a supplementary feed. Carp preferred feed wheat, which composed 52.7 - 65.7 % of food ingested. Positive selectivity was proved for copepods and chironomid larvae, whilst avoidance appeared for bioseston, rotifers, Bosmina longirostris, Daphnia galeata and many benthic invertebrates except above mentioned chironomids (Helobdella stagnalis, Hydracarina, Caenis robusta, Mystacides and Ceratopogonidae). Perch showed predatory (cannibalistic) feeding pattern with 83.9 - 92.6 % portion of small fish in the food bulk. Perch did not consume smallest food particles like bioseston and rotifers. Negative selectivity was proved also for copepods and small benthic animals like water mites and larvae of Caenis robusta, Mystacides, Chironomidae and Ceratopogonidae. On the other hand, bigger invertebrates (

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GL - Rybářství

OECD FORD obor

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Projekt

<a href="/cs/project/EP9392" target="_blank" >EP9392: Technologie produkce tržního okouna</a><br>

Návaznosti

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

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název periodika

Krmiva

ISSN

0023-4850

e-ISSN

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Svazek periodika

42

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

HR - Chorvatská republika

Počet stran výsledku

10

Strana od-do

175-184

Kód UT WoS článku

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EID výsledku v databázi Scopus

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