Eight novel microsatellites were isolated and
characterised in the thorn-tailed rayadito Aphrastura
spinicauda in order to evaluate genetic diversity in three contrasting
populations, two of them at the boundaries of the geographic range of the
species. All loci were found to be polymorphic and 3-15 alleles were found per
locus. Expected and observed heterozygosity ranged from 0.26 to 0.89 and from 0.27 to 0.87, respectively. Global
and pairwise Weir and Cockerham's Fstshowed that genetic
differentiation was greater between the northern population and the ones in
central and southern Chile. The eight markers developed will be useful to study
the genetic diversity of the thorn-tailed rayaditoacross its distribution.
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