Genetic differentiation among populations of the cave fish Schistura oedipus (Cypriniformes: Balitoridae)

Research output: Contribution to journalArticle

Abstract

DNA sequences were determined for portions of the mitochondrial control region and 16S rRNA genes in five populations of Schistura oedipus, a troglobitic fish from northwestern Thailand. Based on variation at seven sites out of 593 sequenced, the five populations fall into three groups, apparently isolated by altitude and distance. Nucleotide diversity within groups is on the order of 1.0 × 10-3 while the extra increment of diversity among groups is on the order of 5.0 × 10-3. While the groups are distinct, the level of differentiation among them is low enough to accept provisionally that the five populations represent a single species. On the basis of 16S sequence, Schistura oedipus appears to be more closely related to S. poculi than to S. reidi, a proposed sister taxon.

Original languageEnglish (US)
Pages (from-to)225-231
Number of pages7
JournalEnvironmental Biology of Fishes
Volume62
Issue number1-3
DOIs
StatePublished - 2001

Fingerprint

Cypriniformes
caves
genetic differentiation
cave
DNA
genetic variation
gene
fish
nucleotide sequences
Thailand
nucleotides
ribosomal RNA
Balitoridae
Schistura
genes

Keywords

  • mtDNA
  • Thailand
  • Troglobitic fish

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology

Cite this

Genetic differentiation among populations of the cave fish Schistura oedipus (Cypriniformes : Balitoridae). / Borowsky, Richard B.; Mertz, Lisa.

In: Environmental Biology of Fishes, Vol. 62, No. 1-3, 2001, p. 225-231.

Research output: Contribution to journalArticle

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