Phylogenetic Relationships Among Six Vetigastropod Subgroups (Mollusca, Gastropoda) Based on 18S rDNA Sequences

  • Yoon, Sook Hee (School of Biological Sciences, Seoul National University) ;
  • Kim, Won (School of Biological Sciences, Seoul National University)
  • Received : 2004.09.01
  • Accepted : 2005.01.20
  • Published : 2005.04.30


Complete 18S rDNA sequences were determined for 10 vetigastropods in order to investigate the phylogeny of Vetigastropoda, which is controversial. These sequences were analyzed together with published sequences for nine other vetigastropods and two nerites. With the two nerites as outgroups, the phylogeny was inferred by three analytical methods, neighbor-joining, maximum likelihood, and maximum parsimony. The 18S rDNA sequence data support the monophyly of four vetigastropod superfamilies, the Pleurotomarioidea, the Fissurelloidea, the Haliotoidea, and the Trochoidea. The present results yield the new branching order: (Pleurotomarioidea (Fissurelloidea ((Scissurelloidea, Lepetodriloidea) (Haliotoidea, Trochoidea)))) within the vetigastropod clade.


Supported by : Korea Research Foundation


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