Potravní komkurence mezi násadou lína obecného (Tinca tinca), kapra obecného (Cyprinus carpio L.)a bufala velkoústého (Ictiobus cyprinellus Val) v rybniční polykultuře.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12610%2F03%3A00005724" target="_blank" >RIV/60076658:12610/03:00005724 - 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

Food competition between 2+ tench (Tinca tinca), comon carp (Cyprinus carpio L.) and bigmouth buffalo (Ictiobus cyprinellus Val) in pond culture

Popis výsledku v původním jazyce

Natural diets of tench (Tinca tinca L.), carp (Cyprinus carpio L.) and bigmouth buffalo (Ictiobus cyprinellus Val.) were studied to determine food competition among them in polyculture stocks of two different densities. Tench diet consisted mainly of zooplankton (43.8%) and bottom sediments (21.2%). In contrast, carp diet consisted mainly of bottom items including plant debris and detritus (68.8%), which dominated over zooplankton (19.1%). In bigmouth buffalo, most food bulk comprised zooplankton (80.7%). Thus, the resulting food competition (i.e. similarity) was most pronounced between tench and carp (60.8%) and between tench and bigmouth buffalo (47.4%). When comparing growth performance of the three cultured species, the ratios between stocking andharvesting size were: in normal stocking density (392 kg ha 1) 1.72, 3.67 and 2.13, and in doubled stocking density (777 kg ha 1) 1.07, 2.33 and 2.16 in tench, carp and bigmouth buffalo, respectively.

Název v anglickém jazyce

Food competition between 2+ tench (Tinca tinca), comon carp (Cyprinus carpio L.) and bigmouth buffalo (Ictiobus cyprinellus Val) in pond culture

Popis výsledku anglicky

Natural diets of tench (Tinca tinca L.), carp (Cyprinus carpio L.) and bigmouth buffalo (Ictiobus cyprinellus Val.) were studied to determine food competition among them in polyculture stocks of two different densities. Tench diet consisted mainly of zooplankton (43.8%) and bottom sediments (21.2%). In contrast, carp diet consisted mainly of bottom items including plant debris and detritus (68.8%), which dominated over zooplankton (19.1%). In bigmouth buffalo, most food bulk comprised zooplankton (80.7%). Thus, the resulting food competition (i.e. similarity) was most pronounced between tench and carp (60.8%) and between tench and bigmouth buffalo (47.4%). When comparing growth performance of the three cultured species, the ratios between stocking andharvesting size were: in normal stocking density (392 kg ha 1) 1.72, 3.67 and 2.13, and in doubled stocking density (777 kg ha 1) 1.07, 2.33 and 2.16 in tench, carp and bigmouth buffalo, respectively.

Druh

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

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

2003

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Ichthyology

ISSN

0175-8659

e-ISSN

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Svazek periodika

19

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

5

Strana od-do

165-169

Kód UT WoS článku

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EID výsledku v databázi Scopus

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