Multi-locus phylogeny of dolphins in the subfamily Lissodelphininae: character synergy improves phylogenetic resolution |
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Authors: | April D Harlin-Cognato Rodney L Honeycutt |
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Institution: | (1) Department of Zoology, Michigan State University, 203 Natural Sciences Building, 48823 East Lansing, Michigan, USA;(2) Natural Science Division, Pepperdine University, 24255 Pacific Coast Highway, 90263 Malibu, California, USA |
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Abstract: | Background Dolphins of the genus Lagenorhynchus are anti-tropically distributed in temperate to cool waters. Phylogenetic analyses of cytochrome b sequences have suggested that the genus is polyphyletic; however, many relationships were poorly resolved. In this study,
we present a combined-analysis phylogenetic hypothesis for Lagenorhynchus and members of the subfamily Lissodelphininae, which is derived from two nuclear and two mitochondrial data sets and the
addition of 34 individuals representing 9 species. In addition, we characterize with parsimony and Bayesian analyses the phylogenetic
utility and interaction of characters with statistical measures, including the utility of highly consistent (non-homoplasious)
characters as a conservative measure of phylogenetic robustness. We also explore the effects of removing sources of character
conflict on phylogenetic resolution. |
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