Abstract
We examined the genetic relatedness of six populations of Leptonycteris curasoae in Mexico using random amplified polymorphic DNA (RAPD). L. curasoae is a migratory bat species that pollinates columnar cacti in north-western Mexico, southern Arizona, and south-western New Mexico but may have non-migratory populations in Mexico. We collected 137 samples from six sites: two in north, one in the west, and three in south-central Mexico. The RAPD banding pattern of the bats from each site were used to calculate the proportion of polymorphic loci. The average of polymorphic bands for the south-central population was 65% and for the north-west population was 53%. AMOVA was used to obtain the variance between ( VA = 60.84 % ) and within sites ( VB = 39.16 % ) , meaning that the greater variation is contained among sites and lesser variation inside them. The correlation between geographic and genetic distances was analyzed with a Mantel non-parametric test ( r = 0.72 ) , suggesting a structured population for this species. Our results indicate the presence of two well differentiated populations of L. curasoae, one in south-central Mexico and the other along the Pacific coast ranging from northern Mexico, including Baja California, Sonora, and Jalisco.
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