Microsatellite Variability Among Black Skimmer (Rynchops niger intercedens) Populations in Southern South America

摘要: Abstract. Rynchops niger intercedens, one of the South American subspecies Black Skimmer, is a widely distributed neotropical bird for which many ecological aspects, such as migratory routes and site fidelity, are unknown. Two distinct breeding phenologies have been reported this subspecies, may create genetic isolation populations. Six microsatellite loci were used to study structure Skimmer in southern America, comparing populations from Brazil Argentina individuals main nonbreeding at Argentina. A weak differentiation between colonies, although statistically significant, was observed. This low (despite different phenologies) could be explained by demographic history these and/or effect very important non-breeding America shared Further studies applying broader range molecular markers plus improvement extant ...