期刊
JOURNAL OF EVOLUTIONARY BIOLOGY
卷 23, 期 9, 页码 1899-1906出版社
WILEY
DOI: 10.1111/j.1420-9101.2010.02047.x
关键词
constraint; Great Auk; phylogenetic comparison; precocial strategy; time budget
The extant auks show three strategies of chick rearing - precocial (chicks leave the nest site when a few days old), intermediate (young raised to a mass of around 20% of adult mass) and semi-precocial (young raised to a mass of around 65% of adult mass). It is not known which strategy the extinct Great Auk used. In this paper, we investigate this issue by a novel combination of a time and energy budget model and phylogenetic comparison. The first approach indicates that for reasonable estimates of the equation parameters, the Great Auk could have followed an intermediate strategy. For a limited range of parameters, the Great Auk could have followed the semi-precocial strategy. Phylogenetic comparison shows that it is unlikely that the Great Auk followed a precocial strategy. The results suggest that the Great Auk followed an intermediate strategy as does its presumed closest extant relative the Razorbill.
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