Are avian eggshell colours effective intraspecific communication signals in the Muscicapoidea? A perceptual modelling approach
نویسندگان
چکیده
PHILLIP CASSEY,* JOHN G. EWEN, N. JUSTIN MARSHALL, MISHA VOROBYEV, TIM M. BLACKBURN & MARK E. HAUBER Centre for Ornithology, School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK Institute of Zoology, Regents Park, London NW1 4RY, UK Vision, Touch and Hearing Research Centre, University of Queensland, Brisbane QLD 4072, Australia Optometry and Vision Science, University of Auckland, Private Bag 92019, Auckland, New Zealand Department of Psychology, Hunter College, City University of New York, NY 10065, USA
منابع مشابه
Not so colourful after all: eggshell pigments constrain avian eggshell colour space.
Birds' eggshells are renowned for their striking colours and varied patterns. Although often considered exceptionally diverse, we report that avian eggshell coloration, sampled here across the full phylogenetic diversity of birds, occupies only 0.08-0.10% of the avian perceivable colour space. The concentrations of the two known tetrapyrrole eggshell pigments (protoporphyrin and biliverdin) are...
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Avian eggshells are variedly coloured, yet only two pigments, biliverdin and protoporphyrin IX, are known to contribute to the dramatic diversity of their colours. By contrast, the contributions of structural or other chemical components of the eggshell are poorly understood. For example, unpigmented eggshells, which appear white to the human eye, vary in their ultraviolet (UV) reflectance, whi...
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