Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/204810
Share/Export:
logo share SHARE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Beak colouration of starling (Sturnus unicolor) males depends on the length of their throat feathers

AuthorsAzcárate-García, Manuel; Ruiz-Rodríguez, Magdalena CSIC ORCID; Ruiz-Castellano, Cristina CSIC ORCID; Díaz-Lora, Silvia; Tomás, Gustavo CSIC ORCID; Martín-Vivaldi, Manuel; Soler, Juan José CSIC ORCID
KeywordsBeak colour
Body condition
Interacting signals
Multiple signals
Ornamental feathers length
Sexually dimorphic characters
Issue Date22-Mar-2020
PublisherOxford University Press
CitationBehavioral Ecology
AbstractWithin the context of complex sexual signalling, most research has focussed on exploring the associations between several signals and/or their relationships with different proxies of individual quality. However, very few studies have focused on checking whether the expression of one signal is conditioned by the expression of the others. Here, by experimentally shortening the throat feathers of male spotless starlings (Sturnus unicolor), we evaluated the influence of this trait on the colour expression of the bea19 base. In addition, we tested the relationship between these two sexually dimorphic characters with traits indicating individual quality such as body condition and colour reflectance at the wavelength related to carotenes in the tip of the beak. Our results show that the colouration of the beak base in males, but not in females, is positively related to body condition and to the length of ornamental throat feathers. Moreover, the experimental shortening of throat feathers in males had a negative effect on the blue chroma intensity of their beak base one year after manipulation. These results support for the first time a causal link between the expression of two sexually dimorphic characters, which is essential to understand their functionality in a multiple signalling framework
URIhttp://hdl.handle.net/10261/204810
ISSN1045-2249
E-ISSN1465-7279
Appears in Collections:(EEZA) Artículos

Files in This Item:
File Description SizeFormat
Manuscrito de prueba (3).pdf666,45 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

Page view(s)

148
checked on Jan 26, 2022

Download(s)

24
checked on Jan 26, 2022

Google ScholarTM

Check


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.