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Title: Genetic analysis of male reproductive success in relation to density in the zebrafish, Danio rerio
Authors: Spence, Rowena
Smith, Carl
Jordan, W. C.
First Published: 5-Apr-2006
Publisher: BioMed Central
Citation: Frontiers in Zoology 2006, 3, 5
Abstract: Background: We used behavioural and genetic data to investigate the effects of density on male reproductive success in the zebrafish, Danio rerio. Based on previous measurements of aggression and courtship behaviour by territorial males, we predicted that they would sire more offspring than non-territorial males. Results: Microsatellite analysis of paternity showed that at low densities territorial males had higher reproductive success than non-territorial males. However, at high density territorial males were no more successful than non-territorials and the sex difference in the opportunity for sexual selection, based on the parameter Imates, was low. Conclusion: Male zebrafish exhibit two distinct mating tactics; territoriality and active pursuit of females. Male reproductive success is density dependent and the opportunity for sexual selection appears to be weak in this species.
DOI Link: 10.1186/1742-9994-3-5
ISSN: 1742-9994
eISSN: 1742-9994
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2006 Spence et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Appears in Collections:Published Articles, Dept. of Biology

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