Origins of the Greenland shark (): 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 () from ancestral sleeper sharks in the Canadian Arctic-Subarctic region. Our results show that morphologically cryptic somniosids and...
Published in: | Ecology and Evolution |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://doi.org/10.1002/ece3.3325 http://purl.flvc.org/fsu/fd/FSU_pmch_29043060 http://fsu.digital.flvc.org/islandora/object/fsu%3A649918/datastream/TN/view/Origins%20of%20the%20Greenland%20shark%20%28%29.jpg |
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ftfloridastunidc:oai:fsu.digital.flvc.org:fsu_649918 2023-05-15T14:43:18+02:00 Origins of the Greenland shark (): Impacts of ice-olation and introgression. Walter, Ryan P (authoraut) Roy, Denis (authoraut) Hussey, Nigel E (authoraut) Stelbrink, Björn (authoraut) Kovacs, Kit M (authoraut) Lydersen, Christian (authoraut) McMeans, Bailey C (authoraut) Svavarsson, Jörundur (authoraut) Kessel, Steven T (authoraut) Biton Porsmoguer, Sebastián (authoraut) Wildes, Sharon (authoraut) Tribuzio, Cindy A (authoraut) Campana, Steven E (authoraut) Petersen, Stephen D (authoraut) Grubbs, R Dean (authoraut) Heath, Daniel D (authoraut) Hedges, Kevin J (authoraut) Fisk, Aaron T (authoraut) 1 online resource computer application/pdf https://doi.org/10.1002/ece3.3325 http://purl.flvc.org/fsu/fd/FSU_pmch_29043060 http://fsu.digital.flvc.org/islandora/object/fsu%3A649918/datastream/TN/view/Origins%20of%20the%20Greenland%20shark%20%28%29.jpg English eng eng Ecology and evolution--2045-7758--2045-7758 Text journal article ftfloridastunidc https://doi.org/10.1002/ece3.3325 2020-08-10T19:06:31Z 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 () from ancestral sleeper sharks in the Canadian Arctic-Subarctic region. Our results show that morphologically cryptic somniosids and 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 - 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. Greenland shark, Somniosus microcephalus, Elasmobranch, Interspecific gene flow, Introgressive hybridization, Isolation with migration This NIH-funded author manuscript originally appeared in PubMed Central at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5632604. Article in Journal/Newspaper Arctic Greenland North Atlantic Somniosus microcephalus Subarctic Florida State University Digital Library (FSUDL) Arctic Greenland Pacific Ecology and Evolution 7 19 8113 8125 |
institution |
Open Polar |
collection |
Florida State University Digital Library (FSUDL) |
op_collection_id |
ftfloridastunidc |
language |
English |
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 () from ancestral sleeper sharks in the Canadian Arctic-Subarctic region. Our results show that morphologically cryptic somniosids and 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 - 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. Greenland shark, Somniosus microcephalus, Elasmobranch, Interspecific gene flow, Introgressive hybridization, Isolation with migration This NIH-funded author manuscript originally appeared in PubMed Central at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5632604. |
author2 |
Walter, Ryan P (authoraut) Roy, Denis (authoraut) Hussey, Nigel E (authoraut) Stelbrink, Björn (authoraut) Kovacs, Kit M (authoraut) Lydersen, Christian (authoraut) McMeans, Bailey C (authoraut) Svavarsson, Jörundur (authoraut) Kessel, Steven T (authoraut) Biton Porsmoguer, Sebastián (authoraut) Wildes, Sharon (authoraut) Tribuzio, Cindy A (authoraut) Campana, Steven E (authoraut) Petersen, Stephen D (authoraut) Grubbs, R Dean (authoraut) Heath, Daniel D (authoraut) Hedges, Kevin J (authoraut) Fisk, Aaron T (authoraut) |
format |
Article in Journal/Newspaper |
title |
Origins of the Greenland shark (): Impacts of ice-olation and introgression. |
spellingShingle |
Origins of the Greenland shark (): Impacts of ice-olation and introgression. |
title_short |
Origins of the Greenland shark (): Impacts of ice-olation and introgression. |
title_full |
Origins of the Greenland shark (): Impacts of ice-olation and introgression. |
title_fullStr |
Origins of the Greenland shark (): Impacts of ice-olation and introgression. |
title_full_unstemmed |
Origins of the Greenland shark (): Impacts of ice-olation and introgression. |
title_sort |
origins of the greenland shark (): impacts of ice-olation and introgression. |
url |
https://doi.org/10.1002/ece3.3325 http://purl.flvc.org/fsu/fd/FSU_pmch_29043060 http://fsu.digital.flvc.org/islandora/object/fsu%3A649918/datastream/TN/view/Origins%20of%20the%20Greenland%20shark%20%28%29.jpg |
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 |
Ecology and evolution--2045-7758--2045-7758 |
op_doi |
https://doi.org/10.1002/ece3.3325 |
container_title |
Ecology and Evolution |
container_volume |
7 |
container_issue |
19 |
container_start_page |
8113 |
op_container_end_page |
8125 |
_version_ |
1766314974554095616 |