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

• Main Authors: Martin, Claudia A., Armstrong, Claire, Illera, Juan Carlos, Emerson, Brent C., Richardson, David, Spurgin, Lewis G.
• Format: Dataset
• Language: English
• Published: Dryad 2020
• Subjects: North Atlantic
• Online Access: https://dx.doi.org/10.5061/dryad.pc866t1kt; https://datadryad.org/stash/dataset/doi:10.5061/dryad.pc866t1kt

Oceanic island archipelagos provide excellent models to understand evolutionary processes. Colonisation 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 colonisation and bottlenecks, with evidence of very weak gene flow between populations. Then, using a genome scan approach, we identify signatures of divergent selection within-archipelagos at SNPs in genes potentially associated with craniofacial development and DNA repair. ... : Double digest restriction site-associated DNA sequencing (RAD-seq) and morphological data across 13 wild caught populations of the Berthelot's pipit across their range in the North Atlantic. ...