Data from: Understanding the mechanisms of anti-tropical divergence in the seabird White-faced Storm-petrel (Procellariiformes: Pelagodroma marina) using a multi-locus approach

• Main Authors: Silva, Monica C., Matias, Rafael, Wanless, Ross M., Ryan, Peter G., Stephenson, Brent, Bolton, Mark, Ferrand, Nuno, Coelho, Manuela, Coelho, M. Manuela
• Format: Dataset
• Language: unknown
• Published: Data Archiving and Networked Services (DANS) 2015
• Subjects: Life sciences; medicine and health care; gene flow; Procellariiformes; Pelagodroma marina; anti-tropical divergence; anonymous nuclear markers; Pleistocene; speciation; Northeast Atlantic; South Atlantic; South Pacific; envir; geo; Pacific; St. Helena
• Online Access: https://doi.org/10.5061/dryad.6nt0d

Analytical methods that apply coalescent theory to multilocus data have improved inferences of demographic parameters that are critical to understanding population divergence and speciation. In particular, at the early stages of speciation, it is important to implement models that accommodate conflicting gene trees, and benefit from the presence of shared polymorphisms. Here, we employ eleven nuclear loci and the mitochondrial control region to investigate the phylogeography and historical demography of the pelagic seabird White-faced Storm-petrel (Pelagodroma marina) by sampling subspecies across its antitropical distribution. Groups are all highly differentiated: global mitochondrial ΦST = 0.89 (P < 0.01) and global nuclear ΦST varies between 0.22 and 0.83 (all P < 0.01). The complete lineage sorting of the mitochondrial locus between hemispheres is corroborated by approximately half of the nuclear genealogies, suggesting a long-term antitropical divergence in isolation. Coalescent-based estimates of demographic parameters suggest that hemispheric divergence of P. marina occurred approximately 840 000 ya (95% HPD 582 000–1 170 000), in the absence of gene flow, and divergence within the Southern Hemisphere occurred 190 000 ya (95% HPD 96 000–600 000), both probably associated with the profound palaeo-oceanographic changes of the Pleistocene. A fledgling sampled in St Helena (tropical South Atlantic) suggests recent colonization from the Northern Hemisphere. Despite the great potential for long-distance dispersal, P. marina antitropical groups have been evolving as independent, allopatric lineages, and divergence is probably maintained by philopatry coupled with asynchronous reproductive phenology and local adaptation. individual_accessionsindividual accession numbers for all the dataset sequencesPmarina_STRUCTURE_inputInput file for structure (nuclear loci only)Pmarina_IMa2_inputInput datafile for IMa2 analysis (includes both the mitochondrial and nuclear loci)Pmarina_NJtree_newickNJ tree resulting from ...