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Título

Fractal geometry of a complex plumage trait reveals bird’s quality

AutorPérez-Rodríguez, Lorenzo CSIC ORCID; Jovani, Roger CSIC ORCID; Mougeot, François CSIC ORCID
Palabras claveCommunication
Condition dependence
Fractals
Honest signals
Immunocompetence
Ornaments
Fecha de publicación23-ene-2013
EditorRoyal Society (Great Britain)
CitaciónProceedings of the Royal Society B: Biological Sciences 280 (1755) 20122783 (2013)
ResumenAnimal coloration is key in natural and sexual selection, playing significant roles in intra- and interspecific communication because of its linkage to individual behaviour, genetics and physiology. Simple animal traits such as the area or the colour intensity of homogeneous patches have been profusely studied. More complex patterns are widespread in nature, but they escape our understanding because their variation is difficult to capture effectively by standard, simple measures. Here, we used fractal geometry to quantify inter-individual variation in the expression of a complex plumage trait, the heterogeneous black bib of the red-legged partridge (Alectoris rufa). We show that a higher bib fractal dimension (FD) predicted better individual body condition, as well as immune responsiveness, which is condition-dependent in our study species. Moreover, when food intake was experimentally reduced during moult as a means to reduce body condition, the bib’s FD significantly decreased. Fractal geometry therefore provides new opportunities for the study of complex animal colour patterns and their roles in animal communication.
Descripción7 paginas, 3 figuras, 2 tables.
Versión del editorhttp://dx.doi.org/10.1098/rspb.2012.2783
URIhttp://hdl.handle.net/10261/65320
DOI10.1098/rspb.2012.2783
ISSN0962-8452
E-ISSN1471-2954
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