Journal
SCIENCE
Volume 311, Issue 5757, Pages 73-77Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1122277
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Funding
- Intramural NIH HHS Funding Source: Medline
- NCI NIH HHS [N01-CO-12400] Funding Source: Medline
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Modern fetid species descend from relatively recent (<11 million years ago) divergence and speciation events that produced successful predatory carnivores worldwide but that have confounded taxonomic classifications. A highly resolved molecular phylogeny with divergence dates for all living cat species, derived from autosomal, X-linked, Y-linked, and mitochondrial gene segments (22,789 base pairs) and 16 fossil calibrations define eight principal lineages produced through at least 10 intercontinental migrations facilitated by sea-level fluctuations. A ghost lineage analysis indicates that available fetid fossils underestimate (i.e., unrepresented basal branch length) first occurrence by an average of 76%, revealing a low representation of fetid lineages in paleontological remains. The phylogenetic performance of distinct gene classes showed that Y-chromosome segments are appreciably more informative than mitochondrial DNA, X-linked, or autosomal genes in resolving the rapid Felidae species radiation.
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