Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owl

The persistence of color polymorphism in nature may be driven by disassortative mating based on color. In vertebrates, body size sometimes correlates with coloration, complicating mating patterns, as the selective pressures favoring mixed-color pairs might be counterbalanced by those influencing bod...

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Detalhes bibliográficos
Autores: Parejo, Deseada, González Medina, Erick, Cruz Miralles, Ángel, Avilés, Jesús Miguel
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/122596
Acesso em linha:https://hdl.handle.net/20.500.14352/122596
Access Level:acceso abierto
Palavra-chave:598.279.2
591.16
591.49
591.5
Body size
Color polymorphism
Non-random mating
Owls
Reversed sexual size dimorphism
Zoología
Aves
Fisiología animal (Biología)
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.20 Ornitología
2401.13 Fisiología Animal
2401.01 Anatomía Animal
2401.06 Ecología Animal
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spelling Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owlParejo, DeseadaGonzález Medina, ErickCruz Miralles, ÁngelAvilés, Jesús Miguel598.279.2591.16591.49591.5Body sizeColor polymorphismNon-random matingOwlsReversed sexual size dimorphismZoologíaAvesFisiología animal (Biología)Ecología (Biología)2401 Biología Animal (Zoología)2401.20 Ornitología2401.13 Fisiología Animal2401.01 Anatomía Animal2401.06 Ecología AnimalThe persistence of color polymorphism in nature may be driven by disassortative mating based on color. In vertebrates, body size sometimes correlates with coloration, complicating mating patterns, as the selective pressures favoring mixed-color pairs might be counterbalanced by those influencing body size. This complexity is heightened in species with reversed sexual size dimorphism, such as owls, where males are smaller than females, and average dissimilarity in mate size may reflect sexual size dimorphism rather than an active disassortative mating pattern. Here we investigate the fitness consequences of mating by color and body size using a long-term dataset from the color polymorphic Eurasian Scops owl (Otus scops), a bird species with reversed sexual size dimorphism. Results reveal that size-disassortative mating enhances reproductive success, as highly size-dimorphic pairs have higher probability of fledging owlets, which may favor reversed sexual size dimorphism. In addition, larger pairs produce heavier owlets with higher immunocompetence, aligning with the conventional size-based mating hypothesis. Although body size and plumage coloration were correlated within pairs, only differences in body size between pair members, not coloration, were related to higher fitness estimates. While color-based assortative mating had no direct impact on any of the fitness proxies studied, greyer pairs exhibited higher feeding rates to offspring than browner pairs. These results underscore the importance of simultaneously considering traits that may covary with color and shape mating patterns to understand the persistence of color polymorphisms in nature.Springer NatureUniversidad Complutense de Madrid20252025-06-0220252025-06-02journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/122596reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengMinisterio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Not available CGL2014-56769-PMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 CGL2016–76322Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 INTERACCIONES CRIPTICAS Y COMPLEJAS EN COMUNIDADES CAVERNICOLAS DEL BOSQUE MEDITERRANEO EN UN CONTEXTO DE CAMBIO GLOBAL: AVES, HORMIGAS Y ECTOPARASITOSopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1225962026-06-02T12:44:21Z
dc.title.none.fl_str_mv Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owl
title Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owl
spellingShingle Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owl
Parejo, Deseada
598.279.2
591.16
591.49
591.5
Body size
Color polymorphism
Non-random mating
Owls
Reversed sexual size dimorphism
Zoología
Aves
Fisiología animal (Biología)
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.20 Ornitología
2401.13 Fisiología Animal
2401.01 Anatomía Animal
2401.06 Ecología Animal
title_short Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owl
title_full Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owl
title_fullStr Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owl
title_full_unstemmed Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owl
title_sort Size, not color, drives assortative mating and influences fledging survival, weight and immunity in a polymorphic owl
dc.creator.none.fl_str_mv Parejo, Deseada
González Medina, Erick
Cruz Miralles, Ángel
Avilés, Jesús Miguel
author Parejo, Deseada
author_facet Parejo, Deseada
González Medina, Erick
Cruz Miralles, Ángel
Avilés, Jesús Miguel
author_role author
author2 González Medina, Erick
Cruz Miralles, Ángel
Avilés, Jesús Miguel
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 598.279.2
591.16
591.49
591.5
Body size
Color polymorphism
Non-random mating
Owls
Reversed sexual size dimorphism
Zoología
Aves
Fisiología animal (Biología)
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.20 Ornitología
2401.13 Fisiología Animal
2401.01 Anatomía Animal
2401.06 Ecología Animal
topic 598.279.2
591.16
591.49
591.5
Body size
Color polymorphism
Non-random mating
Owls
Reversed sexual size dimorphism
Zoología
Aves
Fisiología animal (Biología)
Ecología (Biología)
2401 Biología Animal (Zoología)
2401.20 Ornitología
2401.13 Fisiología Animal
2401.01 Anatomía Animal
2401.06 Ecología Animal
description The persistence of color polymorphism in nature may be driven by disassortative mating based on color. In vertebrates, body size sometimes correlates with coloration, complicating mating patterns, as the selective pressures favoring mixed-color pairs might be counterbalanced by those influencing body size. This complexity is heightened in species with reversed sexual size dimorphism, such as owls, where males are smaller than females, and average dissimilarity in mate size may reflect sexual size dimorphism rather than an active disassortative mating pattern. Here we investigate the fitness consequences of mating by color and body size using a long-term dataset from the color polymorphic Eurasian Scops owl (Otus scops), a bird species with reversed sexual size dimorphism. Results reveal that size-disassortative mating enhances reproductive success, as highly size-dimorphic pairs have higher probability of fledging owlets, which may favor reversed sexual size dimorphism. In addition, larger pairs produce heavier owlets with higher immunocompetence, aligning with the conventional size-based mating hypothesis. Although body size and plumage coloration were correlated within pairs, only differences in body size between pair members, not coloration, were related to higher fitness estimates. While color-based assortative mating had no direct impact on any of the fitness proxies studied, greyer pairs exhibited higher feeding rates to offspring than browner pairs. These results underscore the importance of simultaneously considering traits that may covary with color and shape mating patterns to understand the persistence of color polymorphisms in nature.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-06-02
2025
2025-06-02
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/122596
url https://hdl.handle.net/20.500.14352/122596
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Not available CGL2014-56769-P
Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 CGL2016–76322
Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020 INTERACCIONES CRIPTICAS Y COMPLEJAS EN COMUNIDADES CAVERNICOLAS DEL BOSQUE MEDITERRANEO EN UN CONTEXTO DE CAMBIO GLOBAL: AVES, HORMIGAS Y ECTOPARASITOS
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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