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Article: Patterns of morphological variation in two sexually dimorphic bird species with different tail shapes

TitlePatterns of morphological variation in two sexually dimorphic bird species with different tail shapes
Authors
KeywordsGraduated tail
Sexual selection
Pin tail
Natural selection
Multiple ornaments
Aerodynamics
Wild populations
Issue Date2007
Citation
Biological Journal of the Linnean Society, 2007, v. 91, n. 3, p. 437-443 How to Cite?
AbstractMany studies have focused on tail ornamentation in birds, but not all tail shapes have been studied in depth. Graduated and pin tails have received less attention than forked tails, despite being more likely, in terms of aerodynamic theory, to be honest signals. We report morphological variation in live specimens of two sexually dimorphic passerines from the same site with different tail shapes: graduated (Cape sugarbird Promerops cafer) and pin (orange-breasted sunbird Antobaphes violacea). Coefficients of variation (CVs) were calculated for all morphological traits, both non-ornamental (range 1.91-5.72) and ornamental (range 5.83-21.71). Males and females did not differ in CV for any non-ornamental trait. Ornamental traits in males of both species were significantly more variable than all non-ornamental traits. Cape sugarbird ornamental traits were significantly more variable than those of orange-breasted sunbirds. The high levels of variation in graduated tails relative to pintails suggest that these traits have been driven mainly by sexual selection. In contrast, both constraining natural and multiple ornament selection could be responsible for the relatively low levels of variation in pintails. © 2007 The Linnean Society of London.
Persistent Identifierhttp://hdl.handle.net/10722/230785
ISSN
2015 Impact Factor: 1.984
2015 SCImago Journal Rankings: 1.172

 

DC FieldValueLanguage
dc.contributor.authorGrégoire, Arnaud-
dc.contributor.authorMcfarlane, Mhairi L.-
dc.contributor.authorFaivre, Bruno-
dc.contributor.authorEvans, Matthew R.-
dc.contributor.authorCherry, Michael I.-
dc.date.accessioned2016-09-01T06:06:48Z-
dc.date.available2016-09-01T06:06:48Z-
dc.date.issued2007-
dc.identifier.citationBiological Journal of the Linnean Society, 2007, v. 91, n. 3, p. 437-443-
dc.identifier.issn0024-4066-
dc.identifier.urihttp://hdl.handle.net/10722/230785-
dc.description.abstractMany studies have focused on tail ornamentation in birds, but not all tail shapes have been studied in depth. Graduated and pin tails have received less attention than forked tails, despite being more likely, in terms of aerodynamic theory, to be honest signals. We report morphological variation in live specimens of two sexually dimorphic passerines from the same site with different tail shapes: graduated (Cape sugarbird Promerops cafer) and pin (orange-breasted sunbird Antobaphes violacea). Coefficients of variation (CVs) were calculated for all morphological traits, both non-ornamental (range 1.91-5.72) and ornamental (range 5.83-21.71). Males and females did not differ in CV for any non-ornamental trait. Ornamental traits in males of both species were significantly more variable than all non-ornamental traits. Cape sugarbird ornamental traits were significantly more variable than those of orange-breasted sunbirds. The high levels of variation in graduated tails relative to pintails suggest that these traits have been driven mainly by sexual selection. In contrast, both constraining natural and multiple ornament selection could be responsible for the relatively low levels of variation in pintails. © 2007 The Linnean Society of London.-
dc.languageeng-
dc.relation.ispartofBiological Journal of the Linnean Society-
dc.subjectGraduated tail-
dc.subjectSexual selection-
dc.subjectPin tail-
dc.subjectNatural selection-
dc.subjectMultiple ornaments-
dc.subjectAerodynamics-
dc.subjectWild populations-
dc.titlePatterns of morphological variation in two sexually dimorphic bird species with different tail shapes-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.1095-8312.2007.00808.x-
dc.identifier.scopuseid_2-s2.0-34447121366-
dc.identifier.volume91-
dc.identifier.issue3-
dc.identifier.spage437-
dc.identifier.epage443-
dc.identifier.eissn1095-8312-

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