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dc.contributor.author
Cassini, Marcelo Hernan
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dc.date.available
2021-05-17T17:35:25Z
dc.date.issued
2020-06
dc.identifier.citation
Cassini, Marcelo Hernan; Sexual size dimorphism and sexual selection in artiodactyls; Oxford Univ Press Inc; Behavioral Ecology; 31; 3; 6-2020; 792-797
dc.identifier.issn
1045-2249
dc.identifier.uri
http://hdl.handle.net/11336/132170
dc.description.abstract
Sexual size dimorphism is biased toward males in most mammalian species. The most common explanation is precopulatory intramale sexual selection. Large males win fights and mate more frequently. In artiodactyls, previous tests of this hypothesis consisted of interspecific correlations of sexual dimorphism with group size as a surrogate for the intensity of sexual selection (Is). However, group size is not a proper measure of sexual selection for several reasons as is largely recognized in other mammalian taxa. I conducted an interspecific test on the role of sexual selection in the evolution of sexual dimorphism using the variance in genetic paternity as a proxy for the Is. I reviewed the literature and found 17 studies that allowed estimating Is= V/(W2), where V and W are the variance and mean number of offspring per male, respectively. A phylogenetic generalized least squares analysis indicated that dimorphism (Wm/Wf) showed a significant positive regression with the intensity of sexual selection but not group size (multiple r2= 0.40; F3,17= 12.78, P = 0.002). This result suggests that sexual selection may have played a role in the evolution of sexual size dimorphism in Artiodactyla. An alternative hypothesis based on natural selection is discussed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford Univ Press Inc
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
MAMMALS
dc.subject
MULTIMATING
dc.subject
NATURAL SELECTION
dc.subject
POLYGYNY
dc.subject
REPRODUCTIVE SUCCESS
dc.subject.classification
Biología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Sexual size dimorphism and sexual selection in artiodactyls
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-04-22T20:07:11Z
dc.journal.volume
31
dc.journal.number
3
dc.journal.pagination
792-797
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Oxford
dc.description.fil
Fil: Cassini, Marcelo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina
dc.journal.title
Behavioral Ecology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/beheco/araa017
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/beheco/article/31/3/792/5813425
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