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Diel vertical migrations of age 0+ percids in a shallow, well-mixed reservoir
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SYSNO ASEP 0349550 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Diel vertical migrations of age 0+ percids in a shallow, well-mixed reservoir Author(s) Kratochvíl, M. (CZ)
Čech, Martin (BC-A) RID, ORCID
Vašek, Mojmír (BC-A) RID, ORCID
Kubečka, Jan (BC-A) RID, ORCID
Hejzlar, Josef (BC-A) RID, ORCID
Matěna, Josef (BC-A) RID
Peterka, Jiří (BC-A) RID, ORCID
Macháček, Jiří (BC-A) RID
Seďa, Jaromír (BC-A) RIDSource Title Journal of Limnology. - : PagePress - ISSN 1129-5767
Roč. 69, č. 2 (2010), s. 305-310Number of pages 6 s. Language eng - English Country IT - Italy Keywords Perca fluviatilis ; Sander lucioperca ; DVM ; juvenile Subject RIV EH - Ecology, Behaviour R&D Projects GA206/06/1371 GA ČR - Czech Science Foundation (CSF) GP206/09/P266 GA ČR - Czech Science Foundation (CSF) 1QS600170504 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z60170517 - HBU-Z, BC-A (2005-2011) UT WOS 000282859700012 DOI 10.4081/jlimnol.2010.305 Annotation The distribution of age 0+ perch, Perca fluviatilis and pikeperch, Sander lucioperca was investigated in a shallow reservoir during a 24-h period in late May, using acoustic and netting methods. Diel vertical migrations (DVMs) were acoustically recorded between the layers close to the bottom and the whole water column. The netting data showed a high abundance of larvae and juveniles at night, whereas negligible numbers of age 0+ percids were present in the water column during the day. A strong difference between day and night abundances along with a clear pattern discerned by acoustic methods revealed the DVM of age 0+ percids. Analyses of the fish digestive tract contents indicate that DVM was not governed by feeding behaviour, but rather a defensive strategy against predation. This is in agreement with the size distribution of age 0+ percids, since they were smaller in water column during the day as opposed to the night. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2011
Number of the records: 1