Sex- and species-biased gene flow in a spotted eagle hybrid zone.

ABSTRACT:

Background

Recent theoretical and empirical work points toward a significant role for sex-chromosome linked genes in the evolution of traits that induce reproductive isolation and for traits that evolve under influence of sexual selection. Empirical studies including recently diverged (Pleistocene), short-lived avian species pairs with short generation times have found that introgression occurs on the autosomes but not on the Z-chromosome. Here we study genetic differentiation and gene flow in the long-lived greater spotted eagle (Aquila clanga) and lesser spotted eagle (A. pomarina), two species with comparatively long generation times.

Results

Our data suggest that there is a directional bias in migration rates between hybridizing spotted eagles in eastern Europe. We find

SUBMITTER: Backstrom N 

PROVIDER: S-EPMC3098175 | biostudies-literature | 2011 Apr

REPOSITORIES: biostudies-literature