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The effect of crowding and density on male mating behaviour in the rose bitterling (Rhodeus ocellatus)
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SYSNO ASEP 0345138 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The effect of crowding and density on male mating behaviour in the rose bitterling (Rhodeus ocellatus) Author(s) Casalini, M. (GB)
Reichard, Martin (UBO-W) RID, ORCID, SAI, SAI
Smith, C. (GB)Number of authors 3 Source Title Behaviour. - : Brill - ISSN 0005-7959
Roč. 147, č. 8 (2010), s. 1035-1050Number of pages 16 s. Language eng - English Country NL - Netherlands Keywords density-dependence ; mating system ; sexual selection ; sperm competition ; territoriality Subject RIV EG - Zoology R&D Projects GA206/09/1163 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z60930519 - UBO-W (2005-2011) UT WOS 000279562700006 EID SCOPUS 77953209813 DOI 10.1163/000579510X504879 Annotation Female density and resource availability are two key variables that shape mating systems. Here we tested mean crowding, defined as the number of males per unit of resource, and density per se, defined as the number of individuals present per unit area, to investigate their effect on the mating system of Rhodeus ocellatus. Males were exposed to combinations of high and low levels of crowding and density, while the operational sex ratio was held constant. High levels of crowding significantly affected the proportion of mussel spawning sites defended by males and the proportion of mussels into which sperm was released. In contrast to theoretical predictions, neither density nor crowding influenced overall male aggressive behaviours. Density, but not crowding, had a significant effect on male courtship rate, which arose as a possible trade-off between intra-sexual competition and inter-sexual behaviour. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2011
Number of the records: 1