Red dominates black: agonistic signalling among head morphs in the colour polymorphic Gouldian finch.

Proceedings. Biological Sciences
Sarah R Pryke, Simon C Griffith

Abstract

Recent sexual selection studies on the evolution of bird colouration have mainly focused on signals with a high level of condition-dependent variation, with much less attention given to colour traits whose expression is genetically controlled. Here, we experimentally tested the relative importance of a genetic colour polymorphism in determining male dominance in the Gouldian finch (Erythrura gouldiae), a species displaying three completely discrete but naturally co-occurring genetically inherited phenotypes; yellow-, red- (carotenoid) and black-headed (melanin) morphs. First, in staged dominance contests between unfamiliar birds of different head morphs, red-headed males dominated black-headed males, both of which dominated the yellow-headed birds. Second, within morphs, the intensity and size of the strongly ultraviolet-blue collar determined the outcome of these contests, and among the red-headed males, redder males dominated less chromatic birds. Lastly, when the dominance signal of red-headed birds was experimentally destabilized (i.e. blackened or reddened), naturally red-headed morphs continued to dominate both the black-and yellow-headed morphs. Together, these results suggest that intrinsic dominance-related behavioural...Continue Reading

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Citations

Nov 27, 2009·Die Naturwissenschaften·Jesús M AvilésJuan J Soler
Mar 18, 2008·Journal of Sports Sciences·Martin J AttrillRobert A Barton
Jul 5, 2007·Biology Letters·Sarah R PrykeSimon C Griffith
Aug 23, 2007·Proceedings. Biological Sciences·P R Y BackwellM D Jennions
Feb 14, 2008·Proceedings. Biological Sciences·Peter D Dijkstra, Paul T Y Preenen
May 4, 2011·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Anthony C LittleLisa M DeBruine
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Apr 12, 2012·PloS One·Sarah E JohnsNicholas E Newton-Fisher
Nov 3, 2012·PloS One·Brent M HortonDonna L Maney
Jul 25, 2014·Proceedings. Biological Sciences·C E Ninnes, S Andersson
Sep 12, 2014·Proceedings. Biological Sciences·Hanna KokkoSarah R Pryke
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