Linked Life Data

15177681

Source:http://linkedlifedata.com/resource/pubmed/id/15177681

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
2004-6-4
pubmed:databankReference
pubmed:abstractText
It is commonly accepted that among recent fishes the lungfishes are the closest relatives of the tetrapods. According to this hypothesis, the tetrapods, lungfishes and coelacanths constitute a group of specialized fishes (Sarcopterygii) to the exclusion of other bony fishes. Here, we describe basal relationships among gnathostome (jawed) vertebrates as reconstructed by analysis of complete mitochondrial DNA sequences. The study includes all major extant groups of both tetrapods and fishes and uses agnathan (jawless) vertebrates as an outgroup to root the trees. The analyses split extant gnathostomes into two monophyletic groups: tetrapods and fishes (including cartilaginous fishes). Cladistia (bichirs, ropefish) is in a basal position on the piscine branch. Thus, contrary to the traditional view, the mitogenomic results suggest that among living gnathostomes a tetrapod is a tetrapod and a fish, a fish. Similarly, analyses of 18S and 28S rRNA genes (both nuclear) do not support the commonly accepted tree.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0378-1119
pubmed:author
pubmed:issnType
Print
pubmed:day
26
pubmed:volume
333
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
61-70
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Mitogenomic analyses of deep gnathostome divergences: a fish is a fish.
pubmed:affiliation
Department of Cell and Organism Biology, Division of Evolutionary Molecular Systematics, University of Lund, Sölvegatan 29, S-223 62 Lund, Sweden. ulfur.arnason@cob.lu.se
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't