Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe.
Understanding the biological processes involved in genetic differentiation and divergence between populations within species is a pivotal aim in evolutionary biology. One particular phenomenon that requires clarification is the maintenance of genetic barriers despite the high potential for gene flow...
Published in: | Molecular Ecology |
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/2635690 https://doi.org/10.1111/mec.15310 |
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ftimr:oai:imr.brage.unit.no:11250/2635690 2023-05-15T17:41:32+02:00 Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe. Mattingsdal, Morten Jorde, Per Erik Knutsen, Halvor Jentoft, Sissel Stenseth, Nils Christian Sodeland, Marte Robalo, Joana I. Hansen, Michael M. André, Carl Gonzalez, Enrique Blanco 2019 application/pdf http://hdl.handle.net/11250/2635690 https://doi.org/10.1111/mec.15310 eng eng Norges forskningsråd: 280453 Norges forskningsråd: 234328 Molecular Ecology. 2019, . urn:issn:0962-1083 http://hdl.handle.net/11250/2635690 https://doi.org/10.1111/mec.15310 cristin:1751695 160-171 29 Molecular Ecology 1 Journal article Peer reviewed 2019 ftimr https://doi.org/10.1111/mec.15310 2021-09-23T20:15:08Z Understanding the biological processes involved in genetic differentiation and divergence between populations within species is a pivotal aim in evolutionary biology. One particular phenomenon that requires clarification is the maintenance of genetic barriers despite the high potential for gene flow in the marine environment. Such patterns have been attributed to limited dispersal or local adaptation, and to a lesser extent to the demographic history of the species. The corkwing wrasse (Symphodus melops) is an example of a marine fish species where regions of particular strong divergence are observed. One such genetic break occurred at a surprisingly small spatial scale (FST ~0.1), over a short coastline (<60 km) in the North Sea‐Skagerrak transition area in southwestern Norway. Here, we investigate the observed divergence and purported reproductive isolation using genome resequencing. Our results suggest that historical events during the post‐glacial recolonization route can explain the present population structure of the corkwing wrasse in the northeast Atlantic. While the divergence across the break is strong, we detected ongoing gene flow between populations over the break suggesting recent contact or negative selection against hybrids. Moreover, we found few outlier loci and no clear genomic regions potentially being under selection. We concluded that neutral processes and random genetic drift e.g., due to founder events during colonization have shaped the population structure in this species in Northern Europe. Our findings underline the need to take into account the demographic process in studies of divergence processes. acceptedVersion Article in Journal/Newspaper Northeast Atlantic Institute for Marine Research: Brage IMR Norway Molecular Ecology 29 1 160 171 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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language |
English |
description |
Understanding the biological processes involved in genetic differentiation and divergence between populations within species is a pivotal aim in evolutionary biology. One particular phenomenon that requires clarification is the maintenance of genetic barriers despite the high potential for gene flow in the marine environment. Such patterns have been attributed to limited dispersal or local adaptation, and to a lesser extent to the demographic history of the species. The corkwing wrasse (Symphodus melops) is an example of a marine fish species where regions of particular strong divergence are observed. One such genetic break occurred at a surprisingly small spatial scale (FST ~0.1), over a short coastline (<60 km) in the North Sea‐Skagerrak transition area in southwestern Norway. Here, we investigate the observed divergence and purported reproductive isolation using genome resequencing. Our results suggest that historical events during the post‐glacial recolonization route can explain the present population structure of the corkwing wrasse in the northeast Atlantic. While the divergence across the break is strong, we detected ongoing gene flow between populations over the break suggesting recent contact or negative selection against hybrids. Moreover, we found few outlier loci and no clear genomic regions potentially being under selection. We concluded that neutral processes and random genetic drift e.g., due to founder events during colonization have shaped the population structure in this species in Northern Europe. Our findings underline the need to take into account the demographic process in studies of divergence processes. acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Mattingsdal, Morten Jorde, Per Erik Knutsen, Halvor Jentoft, Sissel Stenseth, Nils Christian Sodeland, Marte Robalo, Joana I. Hansen, Michael M. André, Carl Gonzalez, Enrique Blanco |
spellingShingle |
Mattingsdal, Morten Jorde, Per Erik Knutsen, Halvor Jentoft, Sissel Stenseth, Nils Christian Sodeland, Marte Robalo, Joana I. Hansen, Michael M. André, Carl Gonzalez, Enrique Blanco Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe. |
author_facet |
Mattingsdal, Morten Jorde, Per Erik Knutsen, Halvor Jentoft, Sissel Stenseth, Nils Christian Sodeland, Marte Robalo, Joana I. Hansen, Michael M. André, Carl Gonzalez, Enrique Blanco |
author_sort |
Mattingsdal, Morten |
title |
Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe. |
title_short |
Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe. |
title_full |
Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe. |
title_fullStr |
Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe. |
title_full_unstemmed |
Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe. |
title_sort |
demographic history has shaped the strongly differentiated corkwing wrasse populations in northern europe. |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2635690 https://doi.org/10.1111/mec.15310 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
160-171 29 Molecular Ecology 1 |
op_relation |
Norges forskningsråd: 280453 Norges forskningsråd: 234328 Molecular Ecology. 2019, . urn:issn:0962-1083 http://hdl.handle.net/11250/2635690 https://doi.org/10.1111/mec.15310 cristin:1751695 |
op_doi |
https://doi.org/10.1111/mec.15310 |
container_title |
Molecular Ecology |
container_volume |
29 |
container_issue |
1 |
container_start_page |
160 |
op_container_end_page |
171 |
_version_ |
1766143150427996160 |