Velikost selektivní predace amura černého T (Mylopharyngodon piceus) na vodního plže Planorbanius sp.: laboratorní studie

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Size selective predation by black carp (Mylopharyngodon piceus) on vater snail Planorbanius sp. : Laboratory studies

Popis výsledku v původním jazyce

The black carp (Mylopharyngodon piceus ) is a molluscophagous cyprinid fish native to the monsoon regions of mainland China, which was introduced into the Czech Republic with the aim as to supplement pond polycultures by the fish species capable to control the development of water snail Lymnaea populations as interhosts of eye-flukes Diplostomum spathaceum and to slow down the expansion of zebra mussel Dreissena polymorpha. Water snails Planorbarius sp. were chosen as a model prey for laboratory studiesof black carp grazing pressure. The prey size selectivity was evaluated with respect to mouth gape size (width) of black carp. Fish mouth gape width ranged between 2.8 to 6.65 mm, which corresponds to 6.94#1.12 (5.36-8.94) % SL. The presupposition of considerable grazing impact of 0+ black carp upon molluscs (snails) was confirmed in the laboratory tests. The mouth gape width can be considered as a good estimator of the largest snail that a particular fish can ingest, crush and swallow.

Název v anglickém jazyce

Size selective predation by black carp (Mylopharyngodon piceus) on vater snail Planorbanius sp. : Laboratory studies

Popis výsledku anglicky

The black carp (Mylopharyngodon piceus ) is a molluscophagous cyprinid fish native to the monsoon regions of mainland China, which was introduced into the Czech Republic with the aim as to supplement pond polycultures by the fish species capable to control the development of water snail Lymnaea populations as interhosts of eye-flukes Diplostomum spathaceum and to slow down the expansion of zebra mussel Dreissena polymorpha. Water snails Planorbarius sp. were chosen as a model prey for laboratory studiesof black carp grazing pressure. The prey size selectivity was evaluated with respect to mouth gape size (width) of black carp. Fish mouth gape width ranged between 2.8 to 6.65 mm, which corresponds to 6.94#1.12 (5.36-8.94) % SL. The presupposition of considerable grazing impact of 0+ black carp upon molluscs (snails) was confirmed in the laboratory tests. The mouth gape width can be considered as a good estimator of the largest snail that a particular fish can ingest, crush and swallow.

Druh

D - Stať ve sborníku

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 statě ve sborníku

Aquaculture Europe 2003, EAS Spec. Publ.

ISBN

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ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

99-100

Název nakladatele

EAS

Místo vydání

Trondhaim

Místo konání akce

Trondhaim

Datum konání akce

1. 1. 2003

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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