Linked Life Data

12470943

Source:http://linkedlifedata.com/resource/pubmed/id/12470943

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2002-12-9
pubmed:abstractText
The basal actinopterygians comprise four major lineages (polypteriforms, acipenseriforms, lepisosteids, and Amia) and have been collectively called "ancient fish." We investigated the phylogeny of this group of fishes in relation to teleosts using mitochondrial genomic (mitogenomic) data, and compared this to the various alternative phylogenetic hypotheses that have been proposed previously. In addition to the previously determined complete mitochondrial DNA (mtDNA) sequences from 14 teleosts and two outgroups, we used newly determined mitogenomic sequences of 12 purposefully chosen species representing all the ancient fish lineages plus related teleosts. This data set comprised concatenated nucleotide sequences from 12 protein-coding genes (excluding the ND6 gene and third codon positions) and 22 transfer RNA (tRNA) genes (stem regions only) and these data were subjected to maximum parsimony, maximum likelihood, and Bayesian analyses. The resultant trees from the three methods were well resolved and largely congruent, with most internal branches being supported by high statistical values. Mitogenomic data strongly supported not only the monophyly of the teleosts (osteoglossomorphs and above), but also a sister-group relationship between the teleosts and a clade comprising the acipenseriforms, lepisosteids, and Amia, with the polypteriforms occupying the most basal position in the actinopterygian phylogeny. Although the tree topology differed from any of the previously proposed hypotheses based on morphology, it exhibited congruence with a recently proposed novel hypothesis based on nuclear markers.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1055-7903
pubmed:author
pubmed:issnType
Print
pubmed:volume
26
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
110-20
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Basal actinopterygian relationships: a mitogenomic perspective on the phylogeny of the "ancient fish".
pubmed:affiliation
Ocean Research Institute, University of Tokyo, 1-15-1 Minamidai, Nakano-ku, Tokyo 164-8639, Japan. jinoue@ori.u-tokyo.ac.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't