Abstract

PARDO, E; MAYA, H  and  ALVARINO, G. STUDY OF GENETIC DIVERSITY OF THE DOMESTIC PIG IN THE DEPARTMENT OF CÓRDOBA (COLOMBIA) USING MICROSATELLITE MARKERS. Rev. Med. Vet. Zoot. [online]. 2015, vol.62, n.3, pp.34-48. ISSN 0120-2952.  https://doi.org/10.15446/rfmvz.v62n3.54939.

Diversity and genetic structure of 161 domestic pigs from three populations of the department of Cordoba, were analyzed by means 20 microsatellite markers; all of them were polymorphic microsatellites. The expected average value of heterozygosity was higher than the observed average value for all loci, which may suggest a possible inbreeding mating system. The F_ST index (0.12 ± 0.08) showed 88% of variance in allele frequencies reported within each population and only 12% of the variance was attributable to differences between populations. F_K values (0.079) and F_IT (0.13) indicate heterozygote deficiency within each population and globally. Significant deviations from Hardy-Weinberg balance (p < 0.05) were observed in eight of the markers used. The Neighbor-Joining tree showed than Momil was more closely related with Cerete while Tierralta was further. The main components analysis (ACoP) generates the geographical identification of each population, being more far Tierralta from Momil and Cerete populations, similar results were obtained with the Neighbor-Joining method. The Structure program with K = 3, confirms the existence of three groups or different populations, which generates a phylogeographic pattern observed in the relationship between Momil, Cerete and Tierralta. It is important to note that there are 3 different racial groups, valuable and must be preserved.

Keywords : Alleles; genetic diversity; population structure; microsatellite markers.

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