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Auteur J. K. Christians |
Documents disponibles écrits par cet auteur (3)
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Article
T. D. Williams, Auteur ; J. K. Christians, AuteurReproductive performance varies with age in a wide range of organisms, and increasingly such patterns are interpreted in terms of state-dependent models. We sought to characterise 'state' with regards to age-related variation in clutch size, egg[...]![]()
Article
J. K. Christians, Auteur ; T. D. Williams, AuteurEgg mass shows large intraspecific variation in birds and is repeatable within individuals. The mechanisms underlying this variation are unknown. We hypothesized that measures of egg quality (the mass of yolk protein, yolk lipid, and albumen pro[...]![]()
Article
Recent studies have suggested that the size of avian clutches may be determined in part by the costs of egg production, which are thought to involve the depletion of endogenous nutrient reserves. I tested the hypothesis that producing extra eggs[...]



