Polymorphic heterologous microsatellite loci for population genetics and relatedness studies in the white-faced ibis Plegadis chihi (Viellot, 1817) (Threskiornithidae)

ANDIARA SILOS MORAES DE CASTRO E SOUZA; CAROLINA ISABEL MIÑO; SILVIA NASSIF DEL LAMA

GENETICS AND MOLECULAR BIOLOGY

SOC BRASIL GENETICA

Lugar: Ribeirão Preto; Año: 2012 vol. 35 p. 74 - 80

1415-4757

We screened 44 heterologous microsatellites isolated in species of the families Threskiornithidae, Ciconiidae and Ardeidae for their use in a migratory waterbird, the white-faced ibis Plegadis chihi (Vieillot, 1817) (Threskiornithidae). Of the screened loci, 57% amplified successfully and 24% were polymorphic. In two breeding colonies from southern Brazil (N = 131) we detected 32 alleles (2-10 alleles/ locus). Average He over all loci and colonies was 0.55, and the combined probability of excluding false parents, 98%. There was no departure from HWE in any loci or population. Eru6 and Eru4 loci were in non-random association in the Alvorada colony, and NnNF5 and Eru5 in both populations. AMOVA analysis indicated that most of the genetic diversity was contained within populations. Structure analysis suggested a single population, and FST value showed weak genetic structuring (FST = 0.009, p = 0.05). The two populations are apparently connected through gene-flow. The panel of six microsatellites optimized here was sufficiently informative for characterizing the genetic diversity and structure in these natural populations of the white-faced ibis. The information generated could be useful in future studies of genetic diversity, relatedness and the mating system in Plegadis chihi and related species.