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Location and timing of the deposition of egg strands by perch (Perca fluviatilis L.): the roles of lake hydrology, spawning substrate and female size

SYSNO ASEP	0367122
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Location and timing of the deposition of egg strands by perch (Perca fluviatilis L.): the roles of lake hydrology, spawning substrate and female size
Author(s)	Čech, Martin (BC-A)_{RID, ORCID} Peterka, Jiří (BC-A)_{RID, ORCID} Říha, Milan (BC-A)_{RID, ORCID} Muška, Milan (BC-A)_{RID, ORCID} Hejzlar, Josef (BC-A)_{RID, ORCID} Kubečka, Jan (BC-A)_{RID, ORCID}
Source Title	Knowledge and Management of Aquatic Ecosystems. - : EDP Sciences - ISSN 1961-9502 -, č. 403 (2011), 08p1-08p12
Number of pages	12 s.
Language	eng - English
Country	FR - France
Keywords	SCUBA diving ; aquatic vegetation ; lake management ; common stonewort Chara vulgaris ; common reed Phragmites communis
Subject RIV	EG - Zoology
R&D Projects	GP206/09/P266 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z60170517 - HBU-Z, BC-A (2005-2011)
UT WOS	000299310800009
DOI	10.1051/kmae/2011070
Annotation	The reproduction biology of perch was studied in relation to lake hydrology, spawning substrate and female size in Chabařovice Lake, Czech Republic. An extreme displacement of water mass, induced by a long-lasting strong wind, caused the abundance of egg strands to differ significantly between individual parts of the lake. On average, 91% of perch spawning activity occurred at depths greater than 3 m. The mean concentration of dissolved organic carbon (DOC) indicated that the lake belongs to the category where DOC influencing the penetration of ultraviolet radiation, is not responsible for the deep deposition of egg strands by perch. Most probably, the avoidance of shallow layers (less than 3 m deep) results from strong wind/waves coming from any direction. Larger perch females started to spawn earlier than their smaller conspecifics and they used shallower layers for depositing their egg strands.
Workplace	Biology Centre (since 2006)
Contact	Dana Hypšová, eje@eje.cz, Tel.: 387 775 214
Year of Publishing	2012

Number of the records: 1