Species limits in the Le Conte's thrasher

Robert M Zink, Rachelle C. Blackwell, Octavio Rojas-Soto

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33 Scopus citations

Abstract

We studied patterns of mitochondrial DNA (mtDNA) and colorimetric variation in the Le Conte's Thrasher (Toxostoma lecontei) to determine patterns of geographic variation, and to clarify subspecific and species limits. We sequenced 619 base pairs of mtDNA (parts of cytochrome b and ND6) for 14 Le Conte's Thrashers from 9 localities representing the three putative subspecies (lecontei, macmillanorum, and we do not support recognition of the latter. However, haplotypes of arenicola differed by 3.5% sequence divergence from those of lecontei and macmillanorum, and we suggest that arenicola be recognized as a species. Colorimetric analyses of 105 specimens indicated that arenicola differed consistently from lecontei and macmillanorum, corroborating the mtDNA results.

Original languageEnglish (US)
Pages (from-to)132-138
Number of pages7
JournalCondor
Volume99
Issue number1
DOIs
StatePublished - Jan 1 1997

Keywords

  • T. arenicola
  • Toxostoma lecontei
  • colorimetric variation
  • mtDNA
  • phylogeography
  • sequence analysis
  • species limits

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