Phylogeography of the salamander genus Pseudobranchus in the southeastern United States

Fu Guo Robert Liu, Paul E. Moler, Michael M. Miyamoto

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22 Scopus citations

Abstract

This study provides an extensive set of mitochondrial cytochrome b sequences for the salamander genus Pseudobranchus of the southeastern United States. These sequences were analysed by multiple phylogenetic methods that support a single set of major phylogeographic divisions for its two corroborated species (P. axanthus and P. striatus). These phylogeographic divisions overlap with the geographic breakpoints of other freshwater and terrestrial taxa in this region. Collectively, these overlapping patterns highlight the Central Highland and Tifton/Vidalia uplands as a significant barrier to Atlantic vs. Gulf coast groups, while reconfirming the phylogeographic significance of the Altamaha and Apalachicola river drainages. Despite their distinct phylogeographic split, P. striatus from west and east of these uplands are not currently recognizable as separate species according to the concordance principles for species definition.

Original languageEnglish
Pages (from-to)149-159
Number of pages11
JournalMolecular Phylogenetics and Evolution
Volume39
Issue number1
DOIs
StatePublished - Apr 2006

Keywords

  • Apalachicola and Altamaha river drainages
  • Central Highland
  • Cytochrome b
  • Pseudobranchus
  • Regional phylogeography
  • Tifton and Vidalia uplands

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