Whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow
Reconstructing the evolution of baleen whales (Mysticeti) has been problematic because morphological and genetic analyses have produced different scenarios. This might be caused by genomic admixture that may have taken place among some rorquals. We present the genomes of six whales, including the bl...
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ftleibnizopen:oai:oai.leibnizopen.de:bdE_fYoBNQPDO7WIOdDF 2023-10-09T21:50:07+02:00 Whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow Árnason, Úlfur Lammers, Fritjof Kumar, Vikas Nilsson Janke, Maria Janke, Axel 2018 https://repository.publisso.de/resource/frl:6409381 https://doi.org/10.1126/sciadv.aap9873 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5884691/ http://advances.sciencemag.org/content/4/4/eaap9873#app-1 eng eng http://creativecommons.org/licenses/by-nc/4.0/ Science advances, 4(4):eaap9873 2018 ftleibnizopen https://doi.org/10.1126/sciadv.aap9873 2023-09-10T23:25:43Z Reconstructing the evolution of baleen whales (Mysticeti) has been problematic because morphological and genetic analyses have produced different scenarios. This might be caused by genomic admixture that may have taken place among some rorquals. We present the genomes of six whales, including the blue whale (Balaenoptera musculus), to reconstruct a species tree of baleen whales and to identify phylogenetic conflicts. Evolutionary multilocus analyses of 34,192 genome fragments reveal a fast radiation of rorquals at 10.5 to 7.5 million years ago coinciding with oceanic circulation shifts. The evolutionarily enigmatic gray whale (Eschrichtius robustus) is placed among rorquals, and the blue whale genome shows a high degree of heterozygosity. The nearly equal frequency of conflicting gene trees suggests that speciation of rorqual evolution occurred under gene flow, which is best depicted by evolutionary networks. Especially in marine environments, sympatric speciation might be common; our results raise questions about how genetic divergence can be established. Other/Unknown Material Balaenoptera musculus baleen whales Blue whale LeibnizOpen (The Leibniz Association) Rorqual ENVELOPE(-62.311,-62.311,-65.648,-65.648) Science Advances 4 4 |
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Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
description |
Reconstructing the evolution of baleen whales (Mysticeti) has been problematic because morphological and genetic analyses have produced different scenarios. This might be caused by genomic admixture that may have taken place among some rorquals. We present the genomes of six whales, including the blue whale (Balaenoptera musculus), to reconstruct a species tree of baleen whales and to identify phylogenetic conflicts. Evolutionary multilocus analyses of 34,192 genome fragments reveal a fast radiation of rorquals at 10.5 to 7.5 million years ago coinciding with oceanic circulation shifts. The evolutionarily enigmatic gray whale (Eschrichtius robustus) is placed among rorquals, and the blue whale genome shows a high degree of heterozygosity. The nearly equal frequency of conflicting gene trees suggests that speciation of rorqual evolution occurred under gene flow, which is best depicted by evolutionary networks. Especially in marine environments, sympatric speciation might be common; our results raise questions about how genetic divergence can be established. |
author |
Árnason, Úlfur Lammers, Fritjof Kumar, Vikas Nilsson Janke, Maria Janke, Axel |
spellingShingle |
Árnason, Úlfur Lammers, Fritjof Kumar, Vikas Nilsson Janke, Maria Janke, Axel Whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow |
author_facet |
Árnason, Úlfur Lammers, Fritjof Kumar, Vikas Nilsson Janke, Maria Janke, Axel |
author_sort |
Árnason, Úlfur |
title |
Whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow |
title_short |
Whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow |
title_full |
Whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow |
title_fullStr |
Whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow |
title_full_unstemmed |
Whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow |
title_sort |
whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow |
publishDate |
2018 |
url |
https://repository.publisso.de/resource/frl:6409381 https://doi.org/10.1126/sciadv.aap9873 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5884691/ http://advances.sciencemag.org/content/4/4/eaap9873#app-1 |
long_lat |
ENVELOPE(-62.311,-62.311,-65.648,-65.648) |
geographic |
Rorqual |
geographic_facet |
Rorqual |
genre |
Balaenoptera musculus baleen whales Blue whale |
genre_facet |
Balaenoptera musculus baleen whales Blue whale |
op_source |
Science advances, 4(4):eaap9873 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1126/sciadv.aap9873 |
container_title |
Science Advances |
container_volume |
4 |
container_issue |
4 |
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1779313171298779136 |