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Article: Testosterone influences basal metabolic rate in male house sparrows: A new cost of dominance signalling?

TitleTestosterone influences basal metabolic rate in male house sparrows: A new cost of dominance signalling?
Authors
KeywordsEnergetics
Testosterone
Signalling
Passer domesticus
Issue Date2001
Citation
Proceedings of the Royal Society B: Biological Sciences, 2001, v. 268, n. 1474, p. 1337-1344 How to Cite?
AbstractSexually selected signals of individual dominance have profound effects on access to resources, mate choice and gene flow. However, why such signals should honestly reflect individual quality is poorly understood. Many such signals are known to develop under the influence of testosterone. We conducted an experiment in male house sparrows in which testosterone was manipulated independently during two periods: before the onset of the breeding season and prior to the autumn moult. We then measured the effects of these manipulations on basal metabolic rate and on the size of the chest bib, a sexually selected signal. The results demonstrate that testosterone simultaneously affects both signal development and basal metabolic rate in the house sparrow (Passer domesticus). This evidence, therefore, supports a novel conclusion: that testosterone-dependent signals act as honest indicators of male quality possibly because only high-quality individuals can sustain the energetic costs associated with signal development.
Persistent Identifierhttp://hdl.handle.net/10722/230710
ISSN
2015 Impact Factor: 4.823
2015 SCImago Journal Rankings: 2.375

 

DC FieldValueLanguage
dc.contributor.authorBuchanan, K. L.-
dc.contributor.authorEvans, M. R.-
dc.contributor.authorGoldsmith, A. R.-
dc.contributor.authorBryant, D. M.-
dc.contributor.authorRowe, L. V.-
dc.date.accessioned2016-09-01T06:06:36Z-
dc.date.available2016-09-01T06:06:36Z-
dc.date.issued2001-
dc.identifier.citationProceedings of the Royal Society B: Biological Sciences, 2001, v. 268, n. 1474, p. 1337-1344-
dc.identifier.issn0962-8452-
dc.identifier.urihttp://hdl.handle.net/10722/230710-
dc.description.abstractSexually selected signals of individual dominance have profound effects on access to resources, mate choice and gene flow. However, why such signals should honestly reflect individual quality is poorly understood. Many such signals are known to develop under the influence of testosterone. We conducted an experiment in male house sparrows in which testosterone was manipulated independently during two periods: before the onset of the breeding season and prior to the autumn moult. We then measured the effects of these manipulations on basal metabolic rate and on the size of the chest bib, a sexually selected signal. The results demonstrate that testosterone simultaneously affects both signal development and basal metabolic rate in the house sparrow (Passer domesticus). This evidence, therefore, supports a novel conclusion: that testosterone-dependent signals act as honest indicators of male quality possibly because only high-quality individuals can sustain the energetic costs associated with signal development.-
dc.languageeng-
dc.relation.ispartofProceedings of the Royal Society B: Biological Sciences-
dc.subjectEnergetics-
dc.subjectTestosterone-
dc.subjectSignalling-
dc.subjectPasser domesticus-
dc.titleTestosterone influences basal metabolic rate in male house sparrows: A new cost of dominance signalling?-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1098/rspb.2001.1669-
dc.identifier.pmid11429132-
dc.identifier.scopuseid_2-s2.0-0034943663-
dc.identifier.volume268-
dc.identifier.issue1474-
dc.identifier.spage1337-
dc.identifier.epage1344-
dc.identifier.eissn1471-2970-

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