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Molecular phylogeny of a red-snow-crab species complex using mitochondrial and nuclear DNA markers.

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Title: Molecular phylogeny of a red-snow-crab species complex using mitochondrial and nuclear DNA markers.
Authors: Azuma, Noriko Browse this author →KAKEN DB
Grant, William S Browse this author
Templin, William D Browse this author
Kunihiro, Yasushi Browse this author
Mihara, Eiji Browse this author
Yanagimoto, Takashi Browse this author
Abe, Syuiti Browse this author →KAKEN DB
Keywords: Molecular phylogeny
Cytochrome oxidase subunit 1
Speciation
rDNA
Decapoda
Issue Date: Apr-2011
Publisher: Zoological Society of Japan
Journal Title: Zoological science
Volume: 28
Issue: 4
Start Page: 286
End Page: 292
Publisher DOI: 10.2108/zsj.28.286
PMID: 21466347
Abstract: Nucleotide sequence variation of mitochondrial DNA COI and nuclear rRNA gene regions was used to reconstruct phylogenetic relationships for the red-snow-crab species complex, including the red snow crab, Chionoecetes japonicus, its nominal subspecies, C. japonicus pacificus, and the triangle tanner crab, C. angulatus. The topologies of the Bayesian and neighbor-joining (NJ) trees of the COI and of NJ trees of rRNA sequences placed C. japonicus and C. angulatus in a single clade. The net sequence divergence between these taxa was d(net) = 0.000 in COI, and strongly suggests that these taxa represent a single species. In contrast, haplotypes in C. j. pacificus clustered separately from the C. japonicus - C. angulatus clade. Net sequence divergence from C. japonicus - C. angulatus to C. j. pacificus was d(net) = 0.026 in COI, indicating that C. j. pacificus should be elevated to a separate species, C. pacificus. A 165 bp insert appeared in the rRNA gene of C. j. pacificus, but was absent in the remaining species of Chionoecetes. This autapomorphic condition in C. j. pacificus adds support for an independent evolution of this taxon. Evolutionary divergences between these taxa may reflect contrasting evolutionary process influenced by ocean bathymetry.
Type: article
URI: http://hdl.handle.net/2115/54511
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 東 典子

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