Why are birds’ eggs colourful? Eggshell pigments co-vary with life-history and nesting ecology among British breeding non-passerine birds
نویسندگان
چکیده
School of Earth and Environmental Sciences, University of Adelaide, SA 5005, Australia School of Biosciences, University of Birmingham, Edgbaston B15 2TT, UK School of Biological Sciences, Bristol University, Bristol BS8 1TH, UK Royal Veterinary College, Hawkshead Lane, Hertfordshire AL9 7TA, UK Department of Psychology, Hunter College and the Graduate Center of the City University of New York, New York, NY 10065, USA Department of Zoology and Laboratory of Ornithology, Palacky University, Olomouc, Czech Republic School of Psychology, University of St Andrews, Fife KY16 9AJ, UK Institute of Physiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic
منابع مشابه
Eggshell pigment composition covaries with phylogeny but not with life history or with nesting ecology traits of British passerines
No single hypothesis is likely to explain the diversity in eggshell coloration and patterning across birds, suggesting that eggshell appearance is most likely to have evolved to fulfill many nonexclusive functions. By controlling for nonindependent phylogenetic associations between related species, we describe this diversity using museum eggshells of 71 British breeding passerine species to exa...
متن کاملEarly life stress shapes female reproductive strategy through eggshell pigmentation in Japanese quail.
Physiological constraints on colouration have been widely reported; especially in birds, which trade-off antioxidant responses against colourful costly signals. One female extended phenotypic trait, which might also highlight important physiological trade-offs, is the pigmentation of their eggshells. In ground-nesting species, producing eggs that are visually undetectable by predators is the be...
متن کاملLarge-scale geographical variation in eggshell metal and calcium content in a passerine bird (Ficedula hypoleuca).
Birds have been used as bioindicators of pollution, such as toxic metals. Levels of pollutants in eggs are especially interesting, as developing birds are more sensitive to detrimental effects of pollutants than adults. Only very few studies have monitored intraspecific, large-scale variation in metal pollution across a species' breeding range. We studied large-scale geographic variation in met...
متن کاملEggshell Porosity Provides Insight on Evolution of Nesting in Dinosaurs
Knowledge about the types of nests built by dinosaurs can provide insight into the evolution of nesting and reproductive behaviors among archosaurs. However, the low preservation potential of their nesting materials and nesting structures means that most information can only be gleaned indirectly through comparison with extant archosaurs. Two general nest types are recognized among living archo...
متن کاملNesting behaviour influences species-specific gas exchange across avian eggshells
Carefully controlled gas exchange across the eggshell is essential for the development of the avian embryo. Water vapour conductance (G(H2O)) across the shell, typically measured as mass loss during incubation, has been demonstrated to optimally ensure the healthy development of the embryo while avoiding desiccation. Accordingly, eggs exposed to sub-optimal gas exchange have reduced hatching su...
متن کامل