Literaturdatenbank
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Fujita, M. K., Engstrom, T. N., Starkey, D. E., & Shaffer, H. B. (2004). Turtle phylogeny: insights from a novel nuclear intron. Molecular Phylogenetics and Evolution, 31, 1031–1140.
Added by: Admin (14 Aug 2008 20:36:22 UTC) |
| Resource type: Journal Article BibTeX citation key: Fujita2004 View all bibliographic details  |
Categories: General Keywords: Chelidae, Genetik = genetics, Schildkröten = turtles + tortoises, Systematik = taxonomy, Trionychidae, Trionyx Creators: Engstrom, Fujita, Shaffer, Starkey Collection: Molecular Phylogenetics and Evolution |
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| Abstract |
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Trionyx Introns have gained considerable popularity as markers for molecular phylogenetics. However, no primers exist for a nuclear intron that amplifies across all turtles. Available data from morphology and mitochondrial DNA have not unambiguously resolved relationships within the superfamily Trionychoidea and the family Chelidae, which together form a large portion of extant turtle diversity. We tested the phylogenetic utility of a novel intron from the RNA fingerprint protein 35 (R35) as applied to these two areas of turtle systematics. We found the intron to be a single-copy locus that provides excellent resolving power for lineages among turtles, though problems with alignment made it impossible to infer deeper amniote relationships. Maximum parsimony and maximum likelihood both demonstrated the polyphyly of Trionychoidea and the reciprocal monophyly of Australian/New Guinea and South American chelid turtles. This is the first study to resolve such relationships with strong statistical support, and we suggest that R35 holds great promise for resolving additional persistent problems in the phylogeny of living turtles.
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WIF
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