Variability of a consistent trait: The size of the whitewing patch in European Stonechats (Saxicola rubicola rubicola)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F24%3A43908074" target="_blank" >RIV/60076658:12520/24:43908074 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1111/ibi.13252" target="_blank" >https://doi.org/10.1111/ibi.13252</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Variability of a consistent trait: The size of the whitewing patch in European Stonechats (Saxicola rubicola rubicola)

Original language description

Numerous bird species exhibit striking white patches on their plumages that have been reported as signals of individual quality in the context of sexual selection. Whereas differences in white plumage traits between individuals have been well studied, phenotypic variation and the factors affecting their consistency within the individual have received less attention. Here, we studied the consistency in the size of the white wing patch and its components of variation in a Spanish population of European Stonechats Saxicola rubicola rubicola monitored over 6 years (2007–2012). The wing patch was larger in males than in females for all age-classes, and first-year individuals exhibited smaller wing patches than older birds, particularly males. This trait also varied within the plumage-year at both population and individual level, with slight changes from the moulting period to the breeding season and a sharp decrease afterwards. In addition, patch size varied both between and within individuals across years. The daily mean temperature experienced in the month immediately prior to the moult (i.e. May) had a positive effect on male wing patch size. In females, however, no variable was found to explain wing patch variation satisfactorily. Despite being a dynamic trait throughout the moults, baseline and adjusted repeatabilities indicated a moderately high consistency for white wing patch size in both sexes. Therefore, the white wing patch in Stonechats is a dynamic trait that changes throughout individuals&apos; lives, but is also a consistent trait at the individual level. These results indicate that this depigmented patch could convey information about both the long-term quality and the current state of individuals, harmonizing the existence of intra-individual changes in the size of sexual traits with its potential role as a genetic quality indicator.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10615 - Ornithology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

IBIS

ISSN

0019-1019

e-ISSN

1474-919X

Volume of the periodical

166

Issue of the periodical within the volume

neuvedeno

Country of publishing house

US - UNITED STATES

Number of pages

12

Pages from-to

187-199

UT code for WoS article

001030482400001

EID of the result in the Scopus database

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