Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes
Three ecotypes of killer whale occur in partial sympatry in the North Pacific. Individuals assortatively mate within the same ecotype, resulting in correlated ecological and genetic differentiation. A key question is whether this pattern of evolutionary divergence is an example of incipient sympatri...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2016
|
Subjects: | |
Online Access: | http://hdl.handle.net/10255/dryad.119270 https://doi.org/10.5061/dryad.803q8 |
id |
ftdryad:oai:v1.datadryad.org:10255/dryad.119270 |
---|---|
record_format |
openpolar |
spelling |
ftdryad:oai:v1.datadryad.org:10255/dryad.119270 2023-05-15T17:03:22+02:00 Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes Foote, Andrew D. Morin, Phillip A. North Pacific North Atlantic Marion Island 2016-06-23T17:02:13Z http://hdl.handle.net/10255/dryad.119270 https://doi.org/10.5061/dryad.803q8 unknown doi:10.5061/dryad.803q8/1 doi:10.5061/dryad.803q8/2 doi:10.5061/dryad.803q8/3 doi:10.5061/dryad.803q8/4 doi:10.5061/dryad.803q8/5 doi:10.5061/dryad.803q8/6 doi:10.5061/dryad.803q8/7 doi:10.5061/dryad.803q8/8 doi:10.5061/dryad.803q8/9 doi:10.5061/dryad.803q8/10 doi:10.5061/dryad.803q8/11 doi:10.5061/dryad.803q8/12 doi:10.5061/dryad.803q8/13 doi:10.5061/dryad.803q8/14 doi:10.1038/hdy.2016.54 PMID:27485668 doi:10.5061/dryad.803q8 Foote AD, Morin PA (2016) Genome-wide SNP data suggest complex ancestry of sympatric North Pacific killer whale ecotypes. Heredity 117(5): 316-325. 0018-067X http://hdl.handle.net/10255/dryad.119270 RADseq SNP killer whale Article 2016 ftdryad https://doi.org/10.5061/dryad.803q8 https://doi.org/10.5061/dryad.803q8/1 https://doi.org/10.5061/dryad.803q8/2 https://doi.org/10.5061/dryad.803q8/3 https://doi.org/10.5061/dryad.803q8/4 https://doi.org/10.5061/dryad.803q8/5 https://doi.org/1 2020-01-01T15:36:41Z Three ecotypes of killer whale occur in partial sympatry in the North Pacific. Individuals assortatively mate within the same ecotype, resulting in correlated ecological and genetic differentiation. A key question is whether this pattern of evolutionary divergence is an example of incipient sympatric speciation from a single panmictic ancestral population, or whether sympatry could have resulted from multiple colonisations of the North Pacific and secondary contact between ecotypes. Here, we infer multilocus coalescent trees from >1000 nuclear single-nucleotide polymorphisms (SNPs) and find evidence of incomplete lineage sorting so that the genealogies of SNPs do not all conform to a single topology. To disentangle whether uncertainty in the phylogenetic inference of the relationships among ecotypes could also result from ancestral admixture events we reconstructed the relationship among the ecotypes as an admixture graph and estimated f4-statistics using TreeMix. The results were consistent with episodes of admixture between two of the North Pacific ecotypes and the two outgroups (populations from the Southern Ocean and the North Atlantic). Gene flow may have occurred via unsampled ‘ghost’ populations rather than directly between the populations sampled here. Our results indicate that because of ancestral admixture events and incomplete lineage sorting, a single bifurcating tree does not fully describe the relationship among these populations. The data are therefore most consistent with the genomic variation among North Pacific killer whale ecotypes resulting from multiple colonisation events, and secondary contact may have facilitated evolutionary divergence. Thus, the present-day populations of North Pacific killer whale ecotypes have a complex ancestry, confounding the tree-based inference of ancestral geography. Article in Journal/Newspaper Killer Whale Marion Island North Atlantic Southern Ocean Killer whale Dryad Digital Repository (Duke University) Pacific Southern Ocean |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
RADseq SNP killer whale |
spellingShingle |
RADseq SNP killer whale Foote, Andrew D. Morin, Phillip A. Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes |
topic_facet |
RADseq SNP killer whale |
description |
Three ecotypes of killer whale occur in partial sympatry in the North Pacific. Individuals assortatively mate within the same ecotype, resulting in correlated ecological and genetic differentiation. A key question is whether this pattern of evolutionary divergence is an example of incipient sympatric speciation from a single panmictic ancestral population, or whether sympatry could have resulted from multiple colonisations of the North Pacific and secondary contact between ecotypes. Here, we infer multilocus coalescent trees from >1000 nuclear single-nucleotide polymorphisms (SNPs) and find evidence of incomplete lineage sorting so that the genealogies of SNPs do not all conform to a single topology. To disentangle whether uncertainty in the phylogenetic inference of the relationships among ecotypes could also result from ancestral admixture events we reconstructed the relationship among the ecotypes as an admixture graph and estimated f4-statistics using TreeMix. The results were consistent with episodes of admixture between two of the North Pacific ecotypes and the two outgroups (populations from the Southern Ocean and the North Atlantic). Gene flow may have occurred via unsampled ‘ghost’ populations rather than directly between the populations sampled here. Our results indicate that because of ancestral admixture events and incomplete lineage sorting, a single bifurcating tree does not fully describe the relationship among these populations. The data are therefore most consistent with the genomic variation among North Pacific killer whale ecotypes resulting from multiple colonisation events, and secondary contact may have facilitated evolutionary divergence. Thus, the present-day populations of North Pacific killer whale ecotypes have a complex ancestry, confounding the tree-based inference of ancestral geography. |
format |
Article in Journal/Newspaper |
author |
Foote, Andrew D. Morin, Phillip A. |
author_facet |
Foote, Andrew D. Morin, Phillip A. |
author_sort |
Foote, Andrew D. |
title |
Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes |
title_short |
Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes |
title_full |
Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes |
title_fullStr |
Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes |
title_full_unstemmed |
Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes |
title_sort |
data from: genome-wide snp data suggests complex ancestry of sympatric north pacific killer whale ecotypes |
publishDate |
2016 |
url |
http://hdl.handle.net/10255/dryad.119270 https://doi.org/10.5061/dryad.803q8 |
op_coverage |
North Pacific North Atlantic Marion Island |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
Killer Whale Marion Island North Atlantic Southern Ocean Killer whale |
genre_facet |
Killer Whale Marion Island North Atlantic Southern Ocean Killer whale |
op_relation |
doi:10.5061/dryad.803q8/1 doi:10.5061/dryad.803q8/2 doi:10.5061/dryad.803q8/3 doi:10.5061/dryad.803q8/4 doi:10.5061/dryad.803q8/5 doi:10.5061/dryad.803q8/6 doi:10.5061/dryad.803q8/7 doi:10.5061/dryad.803q8/8 doi:10.5061/dryad.803q8/9 doi:10.5061/dryad.803q8/10 doi:10.5061/dryad.803q8/11 doi:10.5061/dryad.803q8/12 doi:10.5061/dryad.803q8/13 doi:10.5061/dryad.803q8/14 doi:10.1038/hdy.2016.54 PMID:27485668 doi:10.5061/dryad.803q8 Foote AD, Morin PA (2016) Genome-wide SNP data suggest complex ancestry of sympatric North Pacific killer whale ecotypes. Heredity 117(5): 316-325. 0018-067X http://hdl.handle.net/10255/dryad.119270 |
op_doi |
https://doi.org/10.5061/dryad.803q8 https://doi.org/10.5061/dryad.803q8/1 https://doi.org/10.5061/dryad.803q8/2 https://doi.org/10.5061/dryad.803q8/3 https://doi.org/10.5061/dryad.803q8/4 https://doi.org/10.5061/dryad.803q8/5 https://doi.org/1 |
_version_ |
1766057229168934912 |