Genome-wide SNP data suggest 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...
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Online Access: | http://www.nature.com/articles/hdy201654.pdf https://www.nature.com/articles/hdy201654.pdf https://doi.org/10.1038/hdy.2016.54 https://europepmc.org/articles/PMC5061921/ http://www.nature.com/articles/hdy201654 https://www.nature.com/articles/hdy201654 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5061921 https://academic.microsoft.com/#/detail/2492800195 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::ffd21db332f673a676e7fec123d38a88 2023-05-15T17:03:25+02:00 Genome-wide SNP data suggest complex ancestry of sympatric North Pacific killer whale ecotypes. Phillip A. Morin Andrew D. Foote 2016-08-03 http://www.nature.com/articles/hdy201654.pdf https://www.nature.com/articles/hdy201654.pdf https://doi.org/10.1038/hdy.2016.54 https://europepmc.org/articles/PMC5061921/ http://www.nature.com/articles/hdy201654 https://www.nature.com/articles/hdy201654 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5061921 https://academic.microsoft.com/#/detail/2492800195 undefined unknown http://www.nature.com/articles/hdy201654.pdf https://www.nature.com/articles/hdy201654.pdf https://dx.doi.org/10.1038/hdy.2016.54 https://europepmc.org/articles/PMC5061921/ http://dx.doi.org/10.1038/hdy.2016.54 http://www.nature.com/articles/hdy201654 https://www.nature.com/articles/hdy201654 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5061921 https://academic.microsoft.com/#/detail/2492800195 undefined 27804965 10.1038/hdy.2016.54 oai:pubmedcentral.nih.gov:5061921 BFhdy201654 2492800195 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c 10|openaire____::55045bd2a65019fd8e6741a755395c8c 10|opendoar____::eda80a3d5b344bc40f3bc04f65b7a357 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|issn___print::3e88400688618df3a76d97c1b1aa49e1 10|openaire____::8ac8380272269217cb09a928c8caa993 10|openaire____::5f532a3fc4f1ea403f37070f59a7a53a 10|openaire____::806360c771262b4d6770e7cdf04b5c5a Original Article envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.1038/hdy.2016.54 2023-01-22T17:31:46Z 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 North Atlantic Southern Ocean Killer whale Unknown Southern Ocean Pacific Heredity 117 5 316 325 |
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Original Article envir geo |
spellingShingle |
Original Article envir geo Phillip A. Morin Andrew D. Foote Genome-wide SNP data suggest complex ancestry of sympatric North Pacific killer whale ecotypes. |
topic_facet |
Original Article 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. |
format |
Article in Journal/Newspaper |
author |
Phillip A. Morin Andrew D. Foote |
author_facet |
Phillip A. Morin Andrew D. Foote |
author_sort |
Phillip A. Morin |
title |
Genome-wide SNP data suggest complex ancestry of sympatric North Pacific killer whale ecotypes. |
title_short |
Genome-wide SNP data suggest complex ancestry of sympatric North Pacific killer whale ecotypes. |
title_full |
Genome-wide SNP data suggest complex ancestry of sympatric North Pacific killer whale ecotypes. |
title_fullStr |
Genome-wide SNP data suggest complex ancestry of sympatric North Pacific killer whale ecotypes. |
title_full_unstemmed |
Genome-wide SNP data suggest complex ancestry of sympatric North Pacific killer whale ecotypes. |
title_sort |
genome-wide snp data suggest complex ancestry of sympatric north pacific killer whale ecotypes. |
publishDate |
2016 |
url |
http://www.nature.com/articles/hdy201654.pdf https://www.nature.com/articles/hdy201654.pdf https://doi.org/10.1038/hdy.2016.54 https://europepmc.org/articles/PMC5061921/ http://www.nature.com/articles/hdy201654 https://www.nature.com/articles/hdy201654 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5061921 https://academic.microsoft.com/#/detail/2492800195 |
geographic |
Southern Ocean Pacific |
geographic_facet |
Southern Ocean Pacific |
genre |
Killer Whale North Atlantic Southern Ocean Killer whale |
genre_facet |
Killer Whale North Atlantic Southern Ocean Killer whale |
op_source |
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op_relation |
http://www.nature.com/articles/hdy201654.pdf https://www.nature.com/articles/hdy201654.pdf https://dx.doi.org/10.1038/hdy.2016.54 https://europepmc.org/articles/PMC5061921/ http://dx.doi.org/10.1038/hdy.2016.54 http://www.nature.com/articles/hdy201654 https://www.nature.com/articles/hdy201654 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5061921 https://academic.microsoft.com/#/detail/2492800195 |
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op_doi |
https://doi.org/10.1038/hdy.2016.54 |
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Heredity |
container_volume |
117 |
container_issue |
5 |
container_start_page |
316 |
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