Data from: Origins of the Greenland shark (Somniosus microcephalus): impacts of ice-olation and introgression
Herein, we use genetic data from 277 sleeper sharks to perform coalescent-based modeling to test the hypothesis of early Quaternary emergence of the Greenland shark (Somniosus microcephalus) from ancestral sleeper sharks in the Canadian Arctic-Subarctic region. Our results show that morphologically...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:98452 2023-07-02T03:31:06+02:00 Data from: Origins of the Greenland shark (Somniosus microcephalus): impacts of ice-olation and introgression Walter, Ryan P. Roy, Denis Hussey, Nigel E. Stelbrink, Björn Kovacs, Kit M. Lydersen, Christian McMeans, Bailey C. Svavarsson, Jörundur Kessel, Steven T. Biton Porsmoguer, Sebastian Wildes, Sharon Tribuzio, Cindy A. Campana, Steven E. Petersen, Stephen D. Grubbs, R. Dean Heath, Daniel D. Hedges, Kevin J. Fisk, Aaron T. 2017-09-12T23:02:54.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-gj-5oh8 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:98452 unknown doi:10.5061/dryad.p6q3s/1 doi:10.5061/dryad.p6q3s/2 doi:10.1002/ece3.3325 http://nbn-resolving.org/urn:nbn:nl:ui:13-gj-5oh8 doi:10.5061/dryad.p6q3s https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:98452 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2017 ftdans https://doi.org/10.5061/dryad.p6q3s/110.5061/dryad.p6q3s/210.1002/ece3.332510.5061/dryad.p6q3s 2023-06-13T13:25:06Z Herein, we use genetic data from 277 sleeper sharks to perform coalescent-based modeling to test the hypothesis of early Quaternary emergence of the Greenland shark (Somniosus microcephalus) from ancestral sleeper sharks in the Canadian Arctic-Subarctic region. Our results show that morphologically cryptic somniosids S. microcephalus and Somniosus pacificus can be genetically distinguished using combined mitochondrial and nuclear DNA markers. Our data confirm the presence of genetically admixed individuals in the Canadian Arctic and sub-Arctic, and temperate Eastern Atlantic regions, suggesting introgressive hybridization upon secondary contact following the initial species divergence. Conservative substitution rates fitted to an Isolation with Migration (IM) model indicate a likely species divergence time of 2.34 Ma, using the mitochondrial sequence DNA, which in conjunction with the geographic distribution of admixtures and Pacific signatures likely indicates speciation associated with processes other than the closing of the Isthmus of Panama. This time span coincides with further planetary cooling in the early Quaternary period followed by the onset of oscillating glacial-interglacial cycles. We propose that the initial S. microcephalus–S. pacificus split, and subsequent hybridization events, were likely associated with the onset of Pleistocene glacial oscillations, whereby fluctuating sea levels constrained connectivity among Arctic oceanic basins, Arctic marginal seas, and the North Atlantic Ocean. Our data demonstrates support for the evolutionary consequences of oscillatory vicariance via transient oceanic isolation with subsequent secondary contact associated with fluctuating sea levels throughout the Quaternary period—which may serve as a model for the origins of Arctic marine fauna on a broad taxonomic scale. Other/Unknown Material Arctic Greenland North Atlantic Somniosus microcephalus Subarctic Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic Greenland Pacific |
institution |
Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Walter, Ryan P. Roy, Denis Hussey, Nigel E. Stelbrink, Björn Kovacs, Kit M. Lydersen, Christian McMeans, Bailey C. Svavarsson, Jörundur Kessel, Steven T. Biton Porsmoguer, Sebastian Wildes, Sharon Tribuzio, Cindy A. Campana, Steven E. Petersen, Stephen D. Grubbs, R. Dean Heath, Daniel D. Hedges, Kevin J. Fisk, Aaron T. Data from: Origins of the Greenland shark (Somniosus microcephalus): impacts of ice-olation and introgression |
topic_facet |
Life sciences medicine and health care |
description |
Herein, we use genetic data from 277 sleeper sharks to perform coalescent-based modeling to test the hypothesis of early Quaternary emergence of the Greenland shark (Somniosus microcephalus) from ancestral sleeper sharks in the Canadian Arctic-Subarctic region. Our results show that morphologically cryptic somniosids S. microcephalus and Somniosus pacificus can be genetically distinguished using combined mitochondrial and nuclear DNA markers. Our data confirm the presence of genetically admixed individuals in the Canadian Arctic and sub-Arctic, and temperate Eastern Atlantic regions, suggesting introgressive hybridization upon secondary contact following the initial species divergence. Conservative substitution rates fitted to an Isolation with Migration (IM) model indicate a likely species divergence time of 2.34 Ma, using the mitochondrial sequence DNA, which in conjunction with the geographic distribution of admixtures and Pacific signatures likely indicates speciation associated with processes other than the closing of the Isthmus of Panama. This time span coincides with further planetary cooling in the early Quaternary period followed by the onset of oscillating glacial-interglacial cycles. We propose that the initial S. microcephalus–S. pacificus split, and subsequent hybridization events, were likely associated with the onset of Pleistocene glacial oscillations, whereby fluctuating sea levels constrained connectivity among Arctic oceanic basins, Arctic marginal seas, and the North Atlantic Ocean. Our data demonstrates support for the evolutionary consequences of oscillatory vicariance via transient oceanic isolation with subsequent secondary contact associated with fluctuating sea levels throughout the Quaternary period—which may serve as a model for the origins of Arctic marine fauna on a broad taxonomic scale. |
author |
Walter, Ryan P. Roy, Denis Hussey, Nigel E. Stelbrink, Björn Kovacs, Kit M. Lydersen, Christian McMeans, Bailey C. Svavarsson, Jörundur Kessel, Steven T. Biton Porsmoguer, Sebastian Wildes, Sharon Tribuzio, Cindy A. Campana, Steven E. Petersen, Stephen D. Grubbs, R. Dean Heath, Daniel D. Hedges, Kevin J. Fisk, Aaron T. |
author_facet |
Walter, Ryan P. Roy, Denis Hussey, Nigel E. Stelbrink, Björn Kovacs, Kit M. Lydersen, Christian McMeans, Bailey C. Svavarsson, Jörundur Kessel, Steven T. Biton Porsmoguer, Sebastian Wildes, Sharon Tribuzio, Cindy A. Campana, Steven E. Petersen, Stephen D. Grubbs, R. Dean Heath, Daniel D. Hedges, Kevin J. Fisk, Aaron T. |
author_sort |
Walter, Ryan P. |
title |
Data from: Origins of the Greenland shark (Somniosus microcephalus): impacts of ice-olation and introgression |
title_short |
Data from: Origins of the Greenland shark (Somniosus microcephalus): impacts of ice-olation and introgression |
title_full |
Data from: Origins of the Greenland shark (Somniosus microcephalus): impacts of ice-olation and introgression |
title_fullStr |
Data from: Origins of the Greenland shark (Somniosus microcephalus): impacts of ice-olation and introgression |
title_full_unstemmed |
Data from: Origins of the Greenland shark (Somniosus microcephalus): impacts of ice-olation and introgression |
title_sort |
data from: origins of the greenland shark (somniosus microcephalus): impacts of ice-olation and introgression |
publishDate |
2017 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-gj-5oh8 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:98452 |
geographic |
Arctic Greenland Pacific |
geographic_facet |
Arctic Greenland Pacific |
genre |
Arctic Greenland North Atlantic Somniosus microcephalus Subarctic |
genre_facet |
Arctic Greenland North Atlantic Somniosus microcephalus Subarctic |
op_relation |
doi:10.5061/dryad.p6q3s/1 doi:10.5061/dryad.p6q3s/2 doi:10.1002/ece3.3325 http://nbn-resolving.org/urn:nbn:nl:ui:13-gj-5oh8 doi:10.5061/dryad.p6q3s https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:98452 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.p6q3s/110.5061/dryad.p6q3s/210.1002/ece3.332510.5061/dryad.p6q3s |
_version_ |
1770275371043782656 |