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Evidence from nuclear DNA sequences sheds light on the phylogenetic relationships of pinnipedia: Single origin with affinity to musteloidea
Title: | Evidence from nuclear DNA sequences sheds light on the phylogenetic relationships of pinnipedia: Single origin with affinity to musteloidea |
Authors: | Sato, Jun J. Browse this author | Wolsan, Mieczysław Browse this author | Suzuki, Hitoshi Browse this author →KAKEN DB | Hosoda, Tetsuji Browse this author | Yamaguchi, Yasunori Browse this author | Hiyama, Kozue Browse this author | Kobayashi, Mari Browse this author | Minami, Shinji Browse this author |
Keywords: | Arctoidea | Carnivora | nuclear DNA | phylogeny | Pinnipedia |
Issue Date: | Feb-2006 |
Publisher: | Zoological Society of Japan |
Journal Title: | Zoological Science |
Volume: | 23 |
Issue: | 2 |
Start Page: | 125 |
End Page: | 146 |
Publisher DOI: | 10.2108/zsj.23.125 |
Abstract: | Considerable long-standing controversy and confusion surround the phylogenetic affinities of pinnipeds, the largely marine group of "fin-footed" members of the placental mammalian order Carnivora. Until most recently, the two major competing hypotheses were that the pinnipeds have a single (monophyletic) origin from a bear-like ancestor, or that they have a dual (diphyletic) origin, with sea lions (Otariidae) derived from a bear-like ancestor, and seals (Phocidae) derived from an otter-, mustelid-, or musteloid-like ancestor. We examined phylogenetic relationships among 29 species of arctoid carnivorans using a concatenated sequence of 3228 bp from three nuclear loci (apolipoprotein B, APOB; interphotoreceptor retinoid-binding protein, IRBP; recombination-activating gene 1, RAG1). The species represented Pinnipedia (Otariidae: Callorhinus, Eumetopias; Phocidae: Phoca), bears (Ursidae: Ursus, Melursus), and Musteloidea (Mustelidae: Mustela, Enhydra, Melogale, Martes, Gulo, Meles; Procyonidae: Procyon; Ailuridae: Ailurus; Mephitidae: Mephitis). Maximum parsimony, maximum likelihood, and Bayesian inference phylogenetic analyses of separate and combined datasets produced trees with largely congruent topologies. The analyses of the combined dataset resulted in well-resolved and well-supported phylogeny reconstructions. Evidence from nuclear DNA evolution presented here contradicts the two major hypotheses of pinniped relationships and strongly suggests a single origin of the pinnipeds from an arctoid ancestor shared with Musteloidea to the exclusion of Ursidae. |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/13508 |
Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 鈴木 仁
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