Počet záznamů: 1
Location and timing of the deposition of egg strands by perch (Perca fluviatilis L.): the roles of lake hydrology, spawning substrate and female size
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SYSNO ASEP 0367122 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Location and timing of the deposition of egg strands by perch (Perca fluviatilis L.): the roles of lake hydrology, spawning substrate and female size Tvůrce(i) 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, ORCIDZdroj.dok. Knowledge and Management of Aquatic Ecosystems. - : EDP Sciences - ISSN 1961-9502
-, č. 403 (2011), 08p1-08p12Poč.str. 12 s. Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova SCUBA diving ; aquatic vegetation ; lake management ; common stonewort Chara vulgaris ; common reed Phragmites communis Vědní obor RIV EG - Zoologie CEP GP206/09/P266 GA ČR - Grantová agentura ČR CEZ AV0Z60170517 - HBU-Z, BC-A (2005-2011) UT WOS 000299310800009 DOI 10.1051/kmae/2011070 Anotace 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. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2012
Počet záznamů: 1