The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the Anseriformes

1. In addition to genetic drift, both natural and sexual selection may be responsible for interspecific differences in male and female size and coloration. Comparative methods were used to analyse the patterns of dimorphism in the Anseriformes (wildfowl) in relation to mating patterns, nest placemen...

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Detalles Bibliográficos
Autores: Figuerola, Jordi, Green, Andy J.
Tipo de recurso: artículo
Fecha de publicación:2000
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::c210d0bddcbbe657796e8cc1c820fd41
Acceso en línea:http://hdl.handle.net/10261/43206
Access Level:acceso abierto
Palabra clave:Anatidae
natural selection
plumage brightness
Sexual selection
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spelling The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the AnseriformesFiguerola, JordiGreen, Andy J.Anatidaenatural selectionplumage brightnessSexual selection1. In addition to genetic drift, both natural and sexual selection may be responsible for interspecific differences in male and female size and coloration. Comparative methods were used to analyse the patterns of dimorphism in the Anseriformes (wildfowl) in relation to mating patterns, nest placement, insularity and number of closely related, sympatric species. 2. The following predictions were tested about the evolution of dimorphism: (a) that evolutionary changes are more common in male than in female coloration; (b) that the intensity of sexual selection is correlated with the evolution of bright coloration and sexual dimorphism; (c) that the nature of nest sites influences the evolution of bright coloration in females via its effect on predation risk, and the extent of size dimorph- ism via the limits to the size of females using cavities; (d) that insular species show more size dimorphism and less colour dimorphism than mainland species; and (e) that sexual dichromatism is more common in species living in sympatry with a larger number of similar species. 3. Evolutionary changes in plumage brightness were found to be more frequent in males than in females. Changes in mating patterns were significantly correlated with changes in plumage brightness in both males and females and in plumage dichromatism, but not with changes in size dimorphism. Evolutionary transitions from open to hole nesting did not affect plumage dichromatism or size dimorphism. A significant associ- ation was detected between insularity and the probability of changes in male bright- ness, but there was no relationship between insularity and size dimorphism. Sexual dichromatism and bright male (but not female) plumage tend to occur in wildfowl sympatric with a high number of species from the same tribe. 4. In conclusion, mating patterns, insularity and sympatry appear to have evolved in correlation with changes in sexual dichromatism and plumage brightness in the Anseriformes, but not with changes in sexual size dimorphismPeer reviewedBritish Ecological Society201120112000info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/43206reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://onlinelibrary.wiley.com/doi/10.1046/j.1365-2435.2000.00474.x/pdfinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::c210d0bddcbbe657796e8cc1c820fd412026-05-22T06:33:51Z
dc.title.none.fl_str_mv The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the Anseriformes
title The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the Anseriformes
spellingShingle The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the Anseriformes
Figuerola, Jordi
Anatidae
natural selection
plumage brightness
Sexual selection
title_short The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the Anseriformes
title_full The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the Anseriformes
title_fullStr The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the Anseriformes
title_full_unstemmed The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the Anseriformes
title_sort The evolution of sexual dimorphism in relation to mating patterns, cavity nesting, insularity and sympatry in the Anseriformes
dc.creator.none.fl_str_mv Figuerola, Jordi
Green, Andy J.
author Figuerola, Jordi
author_facet Figuerola, Jordi
Green, Andy J.
author_role author
author2 Green, Andy J.
author2_role author
dc.subject.none.fl_str_mv Anatidae
natural selection
plumage brightness
Sexual selection
topic Anatidae
natural selection
plumage brightness
Sexual selection
description 1. In addition to genetic drift, both natural and sexual selection may be responsible for interspecific differences in male and female size and coloration. Comparative methods were used to analyse the patterns of dimorphism in the Anseriformes (wildfowl) in relation to mating patterns, nest placement, insularity and number of closely related, sympatric species. 2. The following predictions were tested about the evolution of dimorphism: (a) that evolutionary changes are more common in male than in female coloration; (b) that the intensity of sexual selection is correlated with the evolution of bright coloration and sexual dimorphism; (c) that the nature of nest sites influences the evolution of bright coloration in females via its effect on predation risk, and the extent of size dimorph- ism via the limits to the size of females using cavities; (d) that insular species show more size dimorphism and less colour dimorphism than mainland species; and (e) that sexual dichromatism is more common in species living in sympatry with a larger number of similar species. 3. Evolutionary changes in plumage brightness were found to be more frequent in males than in females. Changes in mating patterns were significantly correlated with changes in plumage brightness in both males and females and in plumage dichromatism, but not with changes in size dimorphism. Evolutionary transitions from open to hole nesting did not affect plumage dichromatism or size dimorphism. A significant associ- ation was detected between insularity and the probability of changes in male bright- ness, but there was no relationship between insularity and size dimorphism. Sexual dichromatism and bright male (but not female) plumage tend to occur in wildfowl sympatric with a high number of species from the same tribe. 4. In conclusion, mating patterns, insularity and sympatry appear to have evolved in correlation with changes in sexual dichromatism and plumage brightness in the Anseriformes, but not with changes in sexual size dimorphism
publishDate 2000
dc.date.none.fl_str_mv 2000
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/43206
url http://hdl.handle.net/10261/43206
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://onlinelibrary.wiley.com/doi/10.1046/j.1365-2435.2000.00474.x/pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv British Ecological Society
publisher.none.fl_str_mv British Ecological Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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