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Keywords:

  • microsatellite;
  • bottleneck;
  • mating system;
  • Troglodytes aedon;
  • allelic variation

Abstract

We describe 11 microsatellite loci isolated from the banded wren (Thryothorus pleurostictus), a Neotropical species for which understanding the genetic mating system is important for testing questions about the species’ unusual vocal behaviour. Screening of these loci revealed extremely low allelic variation in a Costa Rican population. Allelic variation at these and other previously developed loci is substantially higher in two other wren species, the southern house wren (Troglodytes aedon bonariae) and rufous-and-white wren (Thryothorus rufalbus), suggesting that the low allelic diversity in the banded wren results from demographic bottlenecks rather than locus-sampling artefacts.