Variation in fine-scale genetic structure and local dispersal patterns between peripheral populations of a South American passerine bird.

ABSTRACT: The distribution of suitable habitat influences natal and breeding dispersal at small spatial scales, resulting in strong microgeographic genetic structure. Although environmental variation can promote interpopulation differences in dispersal behavior and local spatial patterns, the effects of distinct ecological conditions on within-species variation in dispersal strategies and in fine-scale genetic structure remain poorly understood. We studied local dispersal and fine-scale genetic structure in the thorn-tailed rayadito (Aphrastura spinicauda), a South American bird that breeds along a wide latitudinal gradient. We combine capture-mark-recapture data from eight breeding seasons and molecular genetics to compare two peripheral populations with contrasting environments in Chile: Na

SUBMITTER: Botero-Delgadillo E 

PROVIDER: S-EPMC5648682 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature