Phylogeny of hagfish based on the mitochondrial 16S rRNA gene

The phylogenetic relationships among the species belonging to the family Myxinidae are still debatable. The mitochondrial DNA sequences from the large ribosomal RNA gene may be of great value for systematic and phylogenetic studies within families. Partial sequences of the 16S rRNA gene were obtaine...

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Bibliographic Details
Published in:Molecular phylogenetics and evolution 2003-09, Vol.28 (3), p.448-457
Main Authors: Kuo, Chien-Hsien, Huang, Shong, Lee, Sin-Che
Format: Article
Language:English
Subjects:
Animals
Base Composition
Base Sequence
Cluster Analysis
DNA Primers
Eptatretinae
Eptatretus
Eptatretus burgeri
Eptatretus cirrhatus
Eptatretus stouii
Evolution
Gills - anatomy & histology
Hagfishes - anatomy & histology
Hagfishes - genetics
Marine
Molecular Sequence Data
Myxine circifrons
Myxine formosana
Myxine glutinosa
Myxinidae
Myxininae
Paramyxine
Paramyxine cheni
Paramyxine nelsoni
Paramyxine sheni
Paramyxine taiwanae
Paramyxine yangi
Phylogeny
RNA, Ribosomal, 16S - genetics
rRNA 16S
Sequence Analysis, DNA
Systematics
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Summary:The phylogenetic relationships among the species belonging to the family Myxinidae are still debatable. The mitochondrial DNA sequences from the large ribosomal RNA gene may be of great value for systematic and phylogenetic studies within families. Partial sequences of the 16S rRNA gene were obtained for comparisons among the following hagfish species, Paramyxine nelsoni, Paramyxine sheni, Paramyxine taiwanae, Paramyxine yangi, Paramyxine cheni, Eptatretus burgeri, Eptatretus stouii, Eptatretus cirrhatus, Myxine glutinosa, Myxine formosana, Myxine circifrons, Myxine sp1, and Myxine sp2. The boundary of four Paramyxine species ( P. sheni, P. taiwanae, P. nelsoni, and P. yangi) from 16S rRNA sequences is ambiguous, however, they are valid based on our unpublished isozyme data as well as the gill aperture arrangement pattern. Both NJ and MP trees constructed from the present molecular data indicate that the genus Paramyxine is diphyletic and Eptatretus paraphyletic. The complexity of Eptatretus and Paramyxine in the clade would not be solved until the farther departed P. cheni is included to form a new clade under the genus Eptatretus. The other clade of Myxininae contains but single genus Myxine.
ISSN:1055-7903
1095-9513
DOI:10.1016/S1055-7903(03)00065-4