Abstract

The Belding’s yellowthroat (Geothlypis beldingi) is an endemic bird species restricted to several isolated oases from the southern half of the Baja California Peninsula, Mexico, where is critically endangered by habitat loss and transformation. We isolated 11 novel microsatellite loci to estimate genetic diversity, individual dispersal and genetic structure. Among nine polymorphic loci, the number of alleles per locus ranged from 2 to 8 (average 4.4). Observed heterozygosity ranged from 0.083 to 0.750 (average 0.433), and expected heterozygosity varied from 0.080 to 0.773 (average 0.542). All loci were unlinked and in Hardy–Weinberg equilibrium. Eight loci also amplified and were polymorphic in the closely related G. trichas.

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