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Male-male interference competition decreases spawning rate in the European bitterling (Rhodeus sericeus)
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SYSNO ASEP 0101755 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve SCOPUS Title Male-male interference competition decreases spawning rate in the European bitterling (Rhodeus sericeus) Title Souboje mezi samci snižují množství tření hořavky duhové Author(s) Reichard, Martin (UBO-W) RID, ORCID, SAI
Jurajda, Pavel (UBO-W) RID, SAI, ORCID
Smith, C. (GB)Source Title Behavioral Ecology and Sociobiology. - : Springer - ISSN 0340-5443
Roč. 56, č. 1 (2004), s. 34-41Number of pages 8 s. Language eng - English Country DE - Germany Keywords alternative mating tactics ; density dependence ; operational sex ratio Subject RIV EG - Zoology CEZ AV0Z6093917 - UBO-W EID SCOPUS 2442509832 DOI https://doi.org/10.1007/s00265-004-0760-2 Annotation We investigated the consequences of male-male interference competition associated with alternative male mating tactics in the European bitterling (Rhodeus sericeus). We showed that the total number of eggs spawned by females was constrained by the number of mussels available for oviposition. The effect was mediated by behavioral interactions among competing males because of variation in the Operational Sex Ratio (OSR) in close proximity to a mussel and not by a direct limitation in mussel capacity to accommodate the eggs. Both total and local male densities affected spawning behavior, and interacted in their effect on female spawning rate. Territorial male aggression caused courtship interruptions that prolonged the time until successful spawning and increased with male density. However, territoriality broke down at the highest male density, with a consequent stabilizing effect on spawning rate. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2005
Number of the records: 1