Diet composition and selectivity in 0+ perch (Perca fluviatilis L.) and its competition with adult fish and carp (Cyprinus carpio L.) stock in pond culture.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12610%2F04%3A00006262" target="_blank" >RIV/60076658:12610/04:00006262 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

čeština

Original language name

Diet composition and selectivity in 0+ perch (Perca fluviatilis L.) and its competition with adult fish and carp (Cyprinus carpio L.) stock in pond culture.

Original language description

The study of perch fry food biology in polyculture with carp and parental fish was performed with fish originating from natural pond spawning. Zoobenthos was the main food resource of perch fry, particularly chironomid larvae supplemented by zooplankton(mostly cladocerans Bosmina longirostris, Chydorus sp., Ceriodaphnia sp., Alona sp. and copepods). Chironomid larvae and cladocerans showed the positive coefficients of selectivity. Perch fry > 25 mm did not consume rotifers. Chironomid larvae were alsothe most important food item of 2+ carp and adult perch. Cannibalistic nutrition with respect to their own progeny was registered in adult perch. Food similarity (= competition) between perch fry and adults amounted to 33.2% and between perch fry and 2+carp fluctuated between 2.3 - 34.8%. Adult perch and carp compete in 50.0% range.

Czech name

Diet composition and selectivity in 0+ perch (Perca fluviatilis L.) and its competition with adult fish and carp (Cyprinus carpio L.) stock in pond culture.

Czech description

The study of perch fry food biology in polyculture with carp and parental fish was performed with fish originating from natural pond spawning. Zoobenthos was the main food resource of perch fry, particularly chironomid larvae supplemented by zooplankton(mostly cladocerans Bosmina longirostris, Chydorus sp., Ceriodaphnia sp., Alona sp. and copepods). Chironomid larvae and cladocerans showed the positive coefficients of selectivity. Perch fry > 25 mm did not consume rotifers. Chironomid larvae were alsothe most important food item of 2+ carp and adult perch. Cannibalistic nutrition with respect to their own progeny was registered in adult perch. Food similarity (= competition) between perch fry and adults amounted to 33.2% and between perch fry and 2+carp fluctuated between 2.3 - 34.8%. Adult perch and carp compete in 50.0% range.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

GL - Fishery

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2004

Confidentiality

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

Name of the periodical

Agriculturae Conspectus Scientificus

ISSN

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e-ISSN

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Volume of the periodical

69

Issue of the periodical within the volume

1

Country of publishing house

HR - CROATIA

Number of pages

7

Pages from-to

21-27

UT code for WoS article

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EID of the result in the Scopus database

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