Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings

Understanding the impressive interspecific variation in avian eggshell colouration has attracted the attention of evolutionary ecologists for more than a century. Several functional explanations predict positive covariation between eggshell pigmentation and phenotypic quality of nestlings. We test t...

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Detalles Bibliográficos
Autores: Soler, Juan José, Ruiz-Castellano, Cristina, Figuerola, Jordi, Martínez de la Puente, Josué, Ruiz-Rodríguez, Magdalena, Tomás, Gustavo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/173533
Acceso en línea:http://hdl.handle.net/10261/173533
Access Level:acceso abierto
Palabra clave:Brood size
Clutch size
Female ornamentation
Sexual selection
Sibling competition
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repository_id_str
dc.title.none.fl_str_mv Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings
title Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings
spellingShingle Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings
Soler, Juan José
Brood size
Clutch size
Female ornamentation
Sexual selection
Sibling competition
title_short Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings
title_full Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings
title_fullStr Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings
title_full_unstemmed Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings
title_sort Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings
dc.creator.none.fl_str_mv Soler, Juan José
Ruiz-Castellano, Cristina
Figuerola, Jordi
Martínez de la Puente, Josué
Ruiz-Rodríguez, Magdalena
Tomás, Gustavo
author Soler, Juan José
author_facet Soler, Juan José
Ruiz-Castellano, Cristina
Figuerola, Jordi
Martínez de la Puente, Josué
Ruiz-Rodríguez, Magdalena
Tomás, Gustavo
author_role author
author2 Ruiz-Castellano, Cristina
Figuerola, Jordi
Martínez de la Puente, Josué
Ruiz-Rodríguez, Magdalena
Tomás, Gustavo
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Fundación BBVA
Soler, Juan José [0000-0003-2990-1489]
Ruiz-Rodríguez, Magdalena [0000- 0002-4202-5180]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Brood size
Clutch size
Female ornamentation
Sexual selection
Sibling competition
topic Brood size
Clutch size
Female ornamentation
Sexual selection
Sibling competition
description Understanding the impressive interspecific variation in avian eggshell colouration has attracted the attention of evolutionary ecologists for more than a century. Several functional explanations predict positive covariation between eggshell pigmentation and phenotypic quality of nestlings. We test this prediction in spotless starlings Sturnus unicolor by using biometric measurements and telomere length of hatchlings and fledglings as proxies of phenotypic quality. Female spotless starlings lay immaculate blue-green eggs, a sexually selected signal directed to males. Pigmentation predicts positive associations with concentration of antioxidants and testosterone in the yolk and with paternal provisioning effort during nestling growth. Eggshell pigmentation (blue-green chroma) is not associated with telomere length of hatchlings, which suggests weak maternal effects on this trait. However, we find negative associations of eggshell colouration with both body condition and telomere length of fledglings. Moreover, we find positive associations between eggshell colouration and clutch size, which suggests that sibling competition is higher in nests with more coloured eggshells. Previous works demonstrated that level of sibling competition is positively related to telomere erosion and, thus, the detected negative associations between eggshell colouration, body condition and telomere length of fledglings would reflect higher level of competition in nests with more coloured eggshells. We therefore speculate with the possibility that females that lay larger clutches also lay more coloured eggshells that elicit increased paternal provisioning effort and, thus, raise larger broods at the expense of telomere erosion of their offspring.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/173533
url http://hdl.handle.net/10261/173533
dc.language.none.fl_str_mv Inglés
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info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2013-48193-C3-1-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2013-48193-C3-2-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2012- 30759
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-65055-P
Soler, Juan José ; Ruiz-Castellano, Cristina ; Figuerola, Jordi ; Martínez de la Puente, Josué ; Ruiz-Rodríguez, Magdalena ; Tomás, Gustavo; Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings [Dataset]; DIGITAL.CSIC; http://dx.doi.org/10.20350/digitalCSIC/8537; http://hdl.handle.net/10261/164410
http://dx.doi.org/10.1111/jav.01686
Sí
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dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
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
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spelling Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglingsSoler, Juan JoséRuiz-Castellano, CristinaFiguerola, JordiMartínez de la Puente, JosuéRuiz-Rodríguez, MagdalenaTomás, GustavoBrood sizeClutch sizeFemale ornamentationSexual selectionSibling competitionUnderstanding the impressive interspecific variation in avian eggshell colouration has attracted the attention of evolutionary ecologists for more than a century. Several functional explanations predict positive covariation between eggshell pigmentation and phenotypic quality of nestlings. We test this prediction in spotless starlings Sturnus unicolor by using biometric measurements and telomere length of hatchlings and fledglings as proxies of phenotypic quality. Female spotless starlings lay immaculate blue-green eggs, a sexually selected signal directed to males. Pigmentation predicts positive associations with concentration of antioxidants and testosterone in the yolk and with paternal provisioning effort during nestling growth. Eggshell pigmentation (blue-green chroma) is not associated with telomere length of hatchlings, which suggests weak maternal effects on this trait. However, we find negative associations of eggshell colouration with both body condition and telomere length of fledglings. Moreover, we find positive associations between eggshell colouration and clutch size, which suggests that sibling competition is higher in nests with more coloured eggshells. Previous works demonstrated that level of sibling competition is positively related to telomere erosion and, thus, the detected negative associations between eggshell colouration, body condition and telomere length of fledglings would reflect higher level of competition in nests with more coloured eggshells. We therefore speculate with the possibility that females that lay larger clutches also lay more coloured eggshells that elicit increased paternal provisioning effort and, thus, raise larger broods at the expense of telomere erosion of their offspring.Funding was provided by the Spanish Ministerio de Economia y Competitividad and European funds (FEDER) (CGL2013-48193-C3-1-P, CGL2013-48193-C3-2-P, CGL2012- 30759, CGL2015-65055-P). JMP, GT and MRR were supported by Juan de la Cierva, Ramón & Cajal and Talentia postdoctoral contracts, respectively. JMP was partially supported by a 2017 Leonardo Grant for Researchers and Cultural Creators, BBVA Foundation.Peer reviewedJohn Wiley & SonsMinisterio de Economía y Competitividad (España)Fundación BBVASoler, Juan José [0000-0003-2990-1489]Ruiz-Rodríguez, Magdalena [0000- 0002-4202-5180]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201820182018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/173533reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2013-48193-C3-1-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2013-48193-C3-2-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2012- 30759info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2015-65055-PSoler, Juan José ; Ruiz-Castellano, Cristina ; Figuerola, Jordi ; Martínez de la Puente, Josué ; Ruiz-Rodríguez, Magdalena ; Tomás, Gustavo; Egg colouration predicts brood size, telomere length and body condition of spotless starling fledglings [Dataset]; DIGITAL.CSIC; http://dx.doi.org/10.20350/digitalCSIC/8537; http://hdl.handle.net/10261/164410http://dx.doi.org/10.1111/jav.01686Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1735332026-05-22T06:33:51Z
score 15,811543

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