A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway
Atlantic herring (Clupea harengus) and Pacific herring (C. pallasii) are sister species that split from a common ancestor about 2 million years ago. Balsfjord, a subarctic fjord in Northern Norway, harbors an outpost population of Pacific herring within the range of the Atlantic herring. We used who...
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Oxford University Press
2023
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/359488 2024-01-07T09:42:22+01:00 A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway Pettersson, Mats E. Fuentes-Pardo, Angela P. Rochus, Christina M. Enbody, Erik D. Bi, Huijuan Väinölä, Risto Andersson, Leif Zoology Risto Väinölä / Principal Investigator 2023-06-19T14:04:02Z 18 application/pdf http://hdl.handle.net/10138/359488 eng eng Oxford University Press 10.1093/gbe/evad069 Pettersson , M E , Fuentes-Pardo , A P , Rochus , C M , Enbody , E D , Bi , H , Väinölä , R & Andersson , L 2023 , ' A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway ' , Genome Biology and Evolution , vol. 15 , no. 5 , evad069 . https://doi.org/10.1093/gbe/evad069 37120751 85159740139 4a2793de-a9aa-4028-9eeb-b326eb34c1ac http://hdl.handle.net/10138/359488 000986431600001 cc_by openAccess info:eu-repo/semantics/openAccess Atlantic herring Pacific herring Gene-flow Hybridization Subarctic 1181 Ecology evolutionary biology 1184 Genetics developmental biology physiology Article publishedVersion 2023 ftunivhelsihelda 2023-12-14T00:15:35Z Atlantic herring (Clupea harengus) and Pacific herring (C. pallasii) are sister species that split from a common ancestor about 2 million years ago. Balsfjord, a subarctic fjord in Northern Norway, harbors an outpost population of Pacific herring within the range of the Atlantic herring. We used whole genome sequencing to show that gene flow from Atlantic herring into the Balsfjord population has generated a stable hybrid population that has persisted for thousands of generations. The Atlantic herring ancestry in Balsfjord was estimated in the range 25-26%. The old age and large proportion of introgressed regions suggest there are no obvious genetic incompatibilities between species. Introgressed regions were widespread in the genome and large, with some in excess of 1 Mb, and they were overrepresented in low-recombination regions. We show that the distribution of introgressed material is non-random; introgressed sequence blocks in different individuals are shared more often than expected by chance. Furthermore, introgressed regions tend to show elevated divergence (F-ST) between Atlantic and Pacific herring. Together, our results suggest that introgression of genetic material has facilitated adaptation in the Balsfjord population. The Balsfjord population provides a rare example of a stable interspecies hybrid population that has persisted over thousands of years. Peer reviewed Article in Journal/Newspaper Balsfjord Northern Norway Subarctic HELDA – University of Helsinki Open Repository Pacific Norway Balsfjord ENVELOPE(19.227,19.227,69.240,69.240) Genome Biology and Evolution 15 5 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
Atlantic herring Pacific herring Gene-flow Hybridization Subarctic 1181 Ecology evolutionary biology 1184 Genetics developmental biology physiology |
spellingShingle |
Atlantic herring Pacific herring Gene-flow Hybridization Subarctic 1181 Ecology evolutionary biology 1184 Genetics developmental biology physiology Pettersson, Mats E. Fuentes-Pardo, Angela P. Rochus, Christina M. Enbody, Erik D. Bi, Huijuan Väinölä, Risto Andersson, Leif A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway |
topic_facet |
Atlantic herring Pacific herring Gene-flow Hybridization Subarctic 1181 Ecology evolutionary biology 1184 Genetics developmental biology physiology |
description |
Atlantic herring (Clupea harengus) and Pacific herring (C. pallasii) are sister species that split from a common ancestor about 2 million years ago. Balsfjord, a subarctic fjord in Northern Norway, harbors an outpost population of Pacific herring within the range of the Atlantic herring. We used whole genome sequencing to show that gene flow from Atlantic herring into the Balsfjord population has generated a stable hybrid population that has persisted for thousands of generations. The Atlantic herring ancestry in Balsfjord was estimated in the range 25-26%. The old age and large proportion of introgressed regions suggest there are no obvious genetic incompatibilities between species. Introgressed regions were widespread in the genome and large, with some in excess of 1 Mb, and they were overrepresented in low-recombination regions. We show that the distribution of introgressed material is non-random; introgressed sequence blocks in different individuals are shared more often than expected by chance. Furthermore, introgressed regions tend to show elevated divergence (F-ST) between Atlantic and Pacific herring. Together, our results suggest that introgression of genetic material has facilitated adaptation in the Balsfjord population. The Balsfjord population provides a rare example of a stable interspecies hybrid population that has persisted over thousands of years. Peer reviewed |
author2 |
Zoology Risto Väinölä / Principal Investigator |
format |
Article in Journal/Newspaper |
author |
Pettersson, Mats E. Fuentes-Pardo, Angela P. Rochus, Christina M. Enbody, Erik D. Bi, Huijuan Väinölä, Risto Andersson, Leif |
author_facet |
Pettersson, Mats E. Fuentes-Pardo, Angela P. Rochus, Christina M. Enbody, Erik D. Bi, Huijuan Väinölä, Risto Andersson, Leif |
author_sort |
Pettersson, Mats E. |
title |
A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway |
title_short |
A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway |
title_full |
A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway |
title_fullStr |
A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway |
title_full_unstemmed |
A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway |
title_sort |
long-standing hybrid population between pacific and atlantic herring in a subarctic fjord of norway |
publisher |
Oxford University Press |
publishDate |
2023 |
url |
http://hdl.handle.net/10138/359488 |
long_lat |
ENVELOPE(19.227,19.227,69.240,69.240) |
geographic |
Pacific Norway Balsfjord |
geographic_facet |
Pacific Norway Balsfjord |
genre |
Balsfjord Northern Norway Subarctic |
genre_facet |
Balsfjord Northern Norway Subarctic |
op_relation |
10.1093/gbe/evad069 Pettersson , M E , Fuentes-Pardo , A P , Rochus , C M , Enbody , E D , Bi , H , Väinölä , R & Andersson , L 2023 , ' A Long-Standing Hybrid Population Between Pacific and Atlantic Herring in a Subarctic Fjord of Norway ' , Genome Biology and Evolution , vol. 15 , no. 5 , evad069 . https://doi.org/10.1093/gbe/evad069 37120751 85159740139 4a2793de-a9aa-4028-9eeb-b326eb34c1ac http://hdl.handle.net/10138/359488 000986431600001 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
Genome Biology and Evolution |
container_volume |
15 |
container_issue |
5 |
_version_ |
1787423332648353792 |