A complex genomic architecture underlies reproductive isolation in a North American oriole hybrid zone.

ABSTRACT: Natural hybrid zones provide powerful opportunities for identifying the mechanisms that facilitate and inhibit speciation. Documenting the extent of genomic admixture allows us to discern the architecture of reproductive isolation through the identification of isolating barriers. This approach is particularly powerful for characterizing the accumulation of isolating barriers in systems exhibiting varying levels of genomic divergence. Here, we use a hybrid zone between two species-the Baltimore (Icterus galbula) and Bullock's (I. bullockii) orioles-to investigate this architecture of reproductive isolation. We combine whole genome re-sequencing with data from an additional 313 individuals amplityped at ancestry-informative markers to characterize fine-scale patterns of admixture, and to qua

SUBMITTER: Walsh J 

PROVIDER: S-EPMC9902562 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature