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: | Dataset |
Language: | unknown |
Published: |
2020
|
Subjects: | |
Online Access: | https://doi.org/10.5061/dryad.803q8 |
id |
fttriple:oai:gotriple.eu:50|dedup_wf_001::e9eb7e030a2b6154abc73bf7c60ec739 |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:50|dedup_wf_001::e9eb7e030a2b6154abc73bf7c60ec739 2023-05-15T17:03:23+02:00 Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes Foote, Andrew D. Morin, Phillip A. 2020-07-13 https://doi.org/10.5061/dryad.803q8 undefined unknown http://dx.doi.org/10.5061/dryad.803q8 https://dx.doi.org/10.5061/dryad.803q8 lic_creative-commons oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:94379 10.5061/dryad.803q8 oai:easy.dans.knaw.nl:easy-dataset:94379 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Life sciences medicine and health care RADseq SNP killer whale North Pacific North Atlantic Marion Island Orcinus orca envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2020 fttriple https://doi.org/10.5061/dryad.803q8 2023-01-22T17:41:50Z 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. Repeat filtered VCF fileSubset of a previously published SNP dataset available from doi:10.5061/dryad.qk22t. Two loci were removed due to being in a gene putatively evolving under selection. A ... Dataset Killer Whale Marion Island North Atlantic Orca Orcinus orca Southern Ocean Killer whale Unknown Southern Ocean Pacific |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Life sciences medicine and health care RADseq SNP killer whale North Pacific North Atlantic Marion Island Orcinus orca envir geo |
spellingShingle |
Life sciences medicine and health care RADseq SNP killer whale North Pacific North Atlantic Marion Island Orcinus orca envir geo Foote, Andrew D. Morin, Phillip A. Data from: Genome-wide SNP data suggests complex ancestry of sympatric North Pacific killer whale ecotypes |
topic_facet |
Life sciences medicine and health care RADseq SNP killer whale North Pacific North Atlantic Marion Island Orcinus orca envir geo |
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. Repeat filtered VCF fileSubset of a previously published SNP dataset available from doi:10.5061/dryad.qk22t. Two loci were removed due to being in a gene putatively evolving under selection. A ... |
format |
Dataset |
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 |
2020 |
url |
https://doi.org/10.5061/dryad.803q8 |
geographic |
Southern Ocean Pacific |
geographic_facet |
Southern Ocean Pacific |
genre |
Killer Whale Marion Island North Atlantic Orca Orcinus orca Southern Ocean Killer whale |
genre_facet |
Killer Whale Marion Island North Atlantic Orca Orcinus orca Southern Ocean Killer whale |
op_source |
oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:94379 10.5061/dryad.803q8 oai:easy.dans.knaw.nl:easy-dataset:94379 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.803q8 https://dx.doi.org/10.5061/dryad.803q8 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.803q8 |
_version_ |
1766057254322176000 |