Sexual size dimorphism in swine denies Rensch"s rule

Sexual dimorphism, defined as a phenotypic difference between males and females of a species, is a common phenomenon in animals. Rensch"s rule describes the pattern of sexual size dimorphism, claiming that larger species generally exhibit higher male to female body size ratios. Offering domesti...

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Detalhes bibliográficos
Autor: Parés Casanova, Pere-Miquel
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10459.1/47741
Acesso em linha:http://hdl.handle.net/10459.1/47741
Access Level:acceso abierto
Palavra-chave:Body mass
Differentiation of breed
Domestication
Sexual selection
Suidae
Dimorfisme sexual en els animals
Sexual dimorphism (Animals)
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spelling Sexual size dimorphism in swine denies Rensch"s ruleParés Casanova, Pere-MiquelBody massDifferentiation of breedDomesticationSexual selectionSuidaeDimorfisme sexual en els animalsSexual dimorphism (Animals)Sexual dimorphism, defined as a phenotypic difference between males and females of a species, is a common phenomenon in animals. Rensch"s rule describes the pattern of sexual size dimorphism, claiming that larger species generally exhibit higher male to female body size ratios. Offering domesticated animals excellent opportunities for testing predictions of functional explanations of Rensch"s theory, we have tested in this paper whether the morphological size of domestic pig breeds follows this rule. We analysed the literature data on adult body size (live weight and withers height) of males and females in 130 contemporary domestic swine breeds and 4 wild Sus species. The analysis confirmed that the pattern of sexual size dimorphism in domestic swine does not conform to Rensch"s rule. It is proposed that this is due to the fact that males and females have been subjected not solely to a sexual selection regimen, but also to environmental factors, interspecific competition with other domestic species, an increase of intersexual food competition, poor feeding resources, and reproductive functional constraints. Considering all of the breeds studied, it is also likely that different counteracting selective pressures exist worldwide.Labome2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10459.1/47741reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: http://ajouronline.com/index.php?journal=AJAFS&page=issue&op=view&path%5B%5D=35Asian Journal of Agriculture and Food Sciences (AJAFS), 2013, vol. 1, num. 4, p. 112-118cc-by, (c) Parés, 2013info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/deed.esoai:recercat.cat:10459.1/477412026-05-29T05:05:01Z
dc.title.none.fl_str_mv Sexual size dimorphism in swine denies Rensch"s rule
title Sexual size dimorphism in swine denies Rensch"s rule
spellingShingle Sexual size dimorphism in swine denies Rensch"s rule
Parés Casanova, Pere-Miquel
Body mass
Differentiation of breed
Domestication
Sexual selection
Suidae
Dimorfisme sexual en els animals
Sexual dimorphism (Animals)
title_short Sexual size dimorphism in swine denies Rensch"s rule
title_full Sexual size dimorphism in swine denies Rensch"s rule
title_fullStr Sexual size dimorphism in swine denies Rensch"s rule
title_full_unstemmed Sexual size dimorphism in swine denies Rensch"s rule
title_sort Sexual size dimorphism in swine denies Rensch"s rule
dc.creator.none.fl_str_mv Parés Casanova, Pere-Miquel
author Parés Casanova, Pere-Miquel
author_facet Parés Casanova, Pere-Miquel
author_role author
dc.subject.none.fl_str_mv Body mass
Differentiation of breed
Domestication
Sexual selection
Suidae
Dimorfisme sexual en els animals
Sexual dimorphism (Animals)
topic Body mass
Differentiation of breed
Domestication
Sexual selection
Suidae
Dimorfisme sexual en els animals
Sexual dimorphism (Animals)
description Sexual dimorphism, defined as a phenotypic difference between males and females of a species, is a common phenomenon in animals. Rensch"s rule describes the pattern of sexual size dimorphism, claiming that larger species generally exhibit higher male to female body size ratios. Offering domesticated animals excellent opportunities for testing predictions of functional explanations of Rensch"s theory, we have tested in this paper whether the morphological size of domestic pig breeds follows this rule. We analysed the literature data on adult body size (live weight and withers height) of males and females in 130 contemporary domestic swine breeds and 4 wild Sus species. The analysis confirmed that the pattern of sexual size dimorphism in domestic swine does not conform to Rensch"s rule. It is proposed that this is due to the fact that males and females have been subjected not solely to a sexual selection regimen, but also to environmental factors, interspecific competition with other domestic species, an increase of intersexual food competition, poor feeding resources, and reproductive functional constraints. Considering all of the breeds studied, it is also likely that different counteracting selective pressures exist worldwide.
publishDate 2013
dc.date.none.fl_str_mv 2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10459.1/47741
url http://hdl.handle.net/10459.1/47741
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://ajouronline.com/index.php?journal=AJAFS&page=issue&op=view&path%5B%5D=35
Asian Journal of Agriculture and Food Sciences (AJAFS), 2013, vol. 1, num. 4, p. 112-118
dc.rights.none.fl_str_mv cc-by, (c) Parés, 2013
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/deed.es
rights_invalid_str_mv cc-by, (c) Parés, 2013
http://creativecommons.org/licenses/by/3.0/deed.es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Labome
publisher.none.fl_str_mv Labome
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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