Populational differences in freshwater prawn Macrobrachium tenellum Smith (Decapoda: Palaemonidae) from three river basins of Oaxaca, Mexico, determined with microsatellite markers

A study determining microsatellite markers was conducted to compare similarities among three different populations of Macrobrachium tenellum prawns from three different hydrological basins in Oaxaca, Mexico. In total, nine different markers in the population were used, of which six coded for the three populations and three did not. Although different, the three populations are closely genetically related, with an average allele richness from 6.845 to 16.754 and a heterozygosity of 0.166 to 0.264. However, the relationship could be much closer, particularly between them. The possible applications and scope of this knowledge are commented on and discussed.