Number of the records: 1
Seasonal dynamics in population characteristics of European bitterling Rhodeus amarus in a small lowland river
- 1.
SYSNO ASEP 0358427 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Seasonal dynamics in population characteristics of European bitterling Rhodeus amarus in a small lowland river Author(s) Konečná, Markéta (UBO-W) RID, SAI
Reichard, Martin (UBO-W) RID, ORCID, SAI, SAINumber of authors 2 Source Title Journal of Fish Biology. - : Wiley - ISSN 0022-1112
Roč. 78, č. 1 (2011), s. 227-239Number of pages 13 s. Language eng - English Country GB - United Kingdom Keywords bitterling ; annual life cycle ; ecophysiology ; gonado-somatic index ; lipid content ; somatic condition Subject RIV EG - Zoology R&D Projects GA206/09/1163 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z60930519 - UBO-W (2005-2011) UT WOS 000286214100015 EID SCOPUS 78651418539 DOI 10.1111/j.1095-8649.2010.02854.x Annotation The seasonal dynamics of biological traits in a population of European bitterling Rhodeus amarus from a small river in central Europe (River Kyjovka) were investigated from April 2007 to March 2008. The reproductive season lasted from early April to mid-June, with a peak in late April when >50% of females possessed ripe eggs in their ovaries. The sex ratio was female-biased, with a higher bias following the peak in reproduction, suggesting higher mortality of males than females over the reproductive period. The population was effectively annual, with a major decrease in adult fish abundance at the end of the reproductive period. Highest relative lipid content and condition factor were observed in February, both decreasing with an increase in investment into gonads. Seasonal dynamics in somatic condition, relative lipid content and gonad mass, and their comparison with other R. amarus populations, suggest that the study population allocated a disproportionally high level of resources to reproduction. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2012
Number of the records: 1