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Evidence from nuclear DNA sequences sheds light on the phylogenetic relationships of pinnipedia: Single origin with affinity to musteloidea

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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)

Submitter: 鈴木 仁

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