Genomic variation, population history and within-archipelago adaptation between island bird populations.

ABSTRACT: Oceanic island archipelagos provide excellent models to understand evolutionary processes. Colonization events and gene flow can interact with selection to shape genetic variation at different spatial scales. Landscape-scale variation in biotic and abiotic factors may drive fine-scale selection within islands, while long-term evolutionary processes may drive divergence between distantly related populations. Here, we examine patterns of population history and selection between recently diverged populations of the Berthelot's pipit (Anthus berthelotii), a passerine endemic to three North Atlantic archipelagos. First, we use demographic trees and f₃ statistics to show that genome-wide divergence across the species range is largely shaped by colonization and bottleneck

SUBMITTER: Martin CA 

PROVIDER: S-EPMC8074581 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature