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Differences in feeding selectivity and efficiency between young-of-the-year European perch (.i.Perca fluviatilis./i.) and roach (.i.Rutilus rutilus./i.) – field observations and laboratory experiments on the importance of prey movement apparency vs. evasiveness
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SYSNO ASEP 0328080 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Differences in feeding selectivity and efficiency between young-of-the-year European perch (Perca fluviatilis) and roach (Rutilus rutilus) – field observations and laboratory experiments on the importance of prey movement apparency vs. evasiveness Title Rozdíly v potravní selektivitě a efektivitě mezi tohoročním okounem říčním (Perca fluviatilis) a ploticí obecnou (Rutilus rutilus) – terénní pozorování a laboratorní experimenty zohledňující významnost nápadnosti pohybu vs. únikovosti kořisti Author(s) Peterka, Jiří (BC-A) RID, ORCID
Matěna, Josef (BC-A) RIDSource Title Biologia. - : Springer - ISSN 0006-3088
Roč. 64, č. 4 (2009), s. 786-794Number of pages 9 s. Language eng - English Country SK - Slovakia Keywords juvenile fish ; foraging ecology ; Daphnia ; Cyclopidae ; Diaptomidae ; movement pattern apparency Subject RIV EH - Ecology, Behaviour R&D Projects IAA600170502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) KJB600960810 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z60170517 - HBU-Z, BC-A (2005-2011) UT WOS 000268190600025 DOI 10.2478/s11756-009-0133-4 Annotation Feeding selectivity and efficiency of young-of-the-year European perch and roach were compared under field and laboratory conditions. In laboratory experiments, the importance of prey evasiveness versus prey movement conspicuousness for fish selectivity was evaluated with respect to changing Cladocera/Copepoda prey ratio. Feeding efficiency was additionally investigated in relation to feeding time and prey density. Differences in feeding selectivity and efficiency between perch and roach juveniles were found to be significant both in the field and laboratory experiments. In roach, selectivity was determined solely by prey evasiveness. By contrast, perch’s selectivity was influenced by prey movement conspicuousness; prey escape abilities did not play an important role. Perch were more efficient foragers on evasive prey, but its feeding efficiency for non-evasive prey was not lower than that of roach. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2010
Number of the records: 1