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Spawning migration of brown trout, Salmo trutta in the Morávka reservoir
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SYSNO ASEP 0084921 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Spawning migration of brown trout, Salmo trutta in the Morávka reservoir Title Třecí migrace pstruha obecného z údolní nádrže Morávka Author(s) Piecuch, J. (CZ)
Lojkásek, B. (CZ)
Lusk, Stanislav (UBO-W) RID
Marek, T. (CZ)Source Title Folia zoologica. - : Ústav biologie obratlovců AV ČR, v. v. i. - ISSN 0139-7893
Roč. 56, č. 2 (2007), s. 201-212Number of pages 12 s. Language eng - English Country CZ - Czech Republic Keywords reproductive migration ; tributary ; trap ; diel activity ; environmental factors Subject RIV EH - Ecology, Behaviour R&D Projects IAA6093105 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) 1QS500450513 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z60930519 - UBO-W (2005-2011) Annotation The spawning migration from Moravka reservoir to the Moravka river tributary of brown trout in autumn (October – November) lasted 22, 24, and 27 days respectively in the seasons 2002–2004. In 2002, 187 fish were trapped, while the number of trapped spawners increased to 447 in 2003 and 2230 in 2004. Spawning males were significantly longer than females (P<0.01). In 2002, more females than males (P<0.05) migrated. The sex-ratio in the following seasons did not significantly differ from 1:1. The peak of spawning, in all three seasons, took place between 28 October and 3 November, and the river water temperature varied from 6 to 8oC. The spawning in 2002 was more nocturnal (between 8:00 p.m. to 6:00 a.m.) than diurnal (P<0.01) and the diel activity showed the multimodal distribution. There were no large or significant differences between the diurnal and nocturnal migrations in 2003 and 2004. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2008
Number of the records: 1