Disentangling structural genomic and behavioural barriers in a sea of connectivity
18 pages, 4 tables, 3 figures.-- This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited Genetic divergence among populations arises through natural select...
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Online Access: | http://hdl.handle.net/10261/185455 https://doi.org/10.1111/mec.15010 |
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ftcsic:oai:digital.csic.es:10261/185455 2024-02-11T10:01:56+01:00 Disentangling structural genomic and behavioural barriers in a sea of connectivity Barth, Julia M. I. Villegas Ríos, David Freitas, Carla Moland, Even Star, Bastiaan André, Carl Knutsen, Halvor Bradbury, Ian Dierking, Jan Petereit, Christoph Righton, David Metcalfe, Julian Jakobsen, Kjetill S. Olsen, Esben Moland Jentoft, Sissel Barth, Julia M. I. Villegas-Ríos, David Freitas, Carla Moland, Even Star, Bastiaan André, Carl Bradbury, Ian Dierking, Jan Jakobsen, Kjetill S. Olsen, Esben Moland Jentoft, Sissel 2019 http://hdl.handle.net/10261/185455 https://doi.org/10.1111/mec.15010 en eng John Wiley & Sons Publisher's version https://doi.org/10.1111/mec.15010 Sí Molecular Ecology 28(6): 1394–1411 (2019) 0962-1083 http://hdl.handle.net/10261/185455 doi:10.1111/mec.15010 1365-294X 30633410 open Adaptation Atlantic cod Behavioural traits Chromosomal rearrangements Gene flow Sympatric divergence artículo http://purl.org/coar/resource_type/c_6501 2019 ftcsic https://doi.org/10.1111/mec.15010 2024-01-16T10:41:03Z 18 pages, 4 tables, 3 figures.-- This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited Genetic divergence among populations arises through natural selection or drift and is counteracted by connectivity and gene flow. In sympatric populations, isolating mechanisms are thus needed to limit the homogenizing effects of gene flow to allow for adaptation and speciation. Chromosomal inversions act as an important mechanism maintaining isolating barriers, yet their role in sympatric populations and divergence with gene flow is not entirely understood. Here, we revisit the question of whether inversions play a role in the divergence of connected populations of the marine fish Atlantic cod (Gadus morhua), by exploring a unique data set combining whole‐genome sequencing data and behavioural data obtained with acoustic telemetry. Within a confined fjord environment, we find three genetically differentiated Atlantic cod types belonging to the oceanic North Sea population, the western Baltic population and a local fjord‐type cod. Continuous behavioural tracking over 4 year revealed temporally stable sympatry of these types within the fjord. Despite overall weak genetic differentiation consistent with high levels of gene flow, we detected significant frequency shifts of three previously identified inversions, indicating an adaptive barrier to gene flow. In addition, behavioural data indicated that North Sea cod and individuals homozygous for the LG12 inversion had lower fitness in the fjord environment. However, North Sea and fjord‐type cod also occupy different depths, possibly contributing to prezygotic reproductive isolation and representing a behavioural barrier to gene flow. Our results provide the first insights into a complex interplay of genomic and behavioural isolating barriers in Atlantic cod and establish a new model system towards an understanding of the role of ... Article in Journal/Newspaper atlantic cod Gadus morhua Digital.CSIC (Spanish National Research Council) Molecular Ecology 28 6 1394 1411 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Adaptation Atlantic cod Behavioural traits Chromosomal rearrangements Gene flow Sympatric divergence |
spellingShingle |
Adaptation Atlantic cod Behavioural traits Chromosomal rearrangements Gene flow Sympatric divergence Barth, Julia M. I. Villegas Ríos, David Freitas, Carla Moland, Even Star, Bastiaan André, Carl Knutsen, Halvor Bradbury, Ian Dierking, Jan Petereit, Christoph Righton, David Metcalfe, Julian Jakobsen, Kjetill S. Olsen, Esben Moland Jentoft, Sissel Disentangling structural genomic and behavioural barriers in a sea of connectivity |
topic_facet |
Adaptation Atlantic cod Behavioural traits Chromosomal rearrangements Gene flow Sympatric divergence |
description |
18 pages, 4 tables, 3 figures.-- This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited Genetic divergence among populations arises through natural selection or drift and is counteracted by connectivity and gene flow. In sympatric populations, isolating mechanisms are thus needed to limit the homogenizing effects of gene flow to allow for adaptation and speciation. Chromosomal inversions act as an important mechanism maintaining isolating barriers, yet their role in sympatric populations and divergence with gene flow is not entirely understood. Here, we revisit the question of whether inversions play a role in the divergence of connected populations of the marine fish Atlantic cod (Gadus morhua), by exploring a unique data set combining whole‐genome sequencing data and behavioural data obtained with acoustic telemetry. Within a confined fjord environment, we find three genetically differentiated Atlantic cod types belonging to the oceanic North Sea population, the western Baltic population and a local fjord‐type cod. Continuous behavioural tracking over 4 year revealed temporally stable sympatry of these types within the fjord. Despite overall weak genetic differentiation consistent with high levels of gene flow, we detected significant frequency shifts of three previously identified inversions, indicating an adaptive barrier to gene flow. In addition, behavioural data indicated that North Sea cod and individuals homozygous for the LG12 inversion had lower fitness in the fjord environment. However, North Sea and fjord‐type cod also occupy different depths, possibly contributing to prezygotic reproductive isolation and representing a behavioural barrier to gene flow. Our results provide the first insights into a complex interplay of genomic and behavioural isolating barriers in Atlantic cod and establish a new model system towards an understanding of the role of ... |
author2 |
Barth, Julia M. I. Villegas-Ríos, David Freitas, Carla Moland, Even Star, Bastiaan André, Carl Bradbury, Ian Dierking, Jan Jakobsen, Kjetill S. Olsen, Esben Moland Jentoft, Sissel |
format |
Article in Journal/Newspaper |
author |
Barth, Julia M. I. Villegas Ríos, David Freitas, Carla Moland, Even Star, Bastiaan André, Carl Knutsen, Halvor Bradbury, Ian Dierking, Jan Petereit, Christoph Righton, David Metcalfe, Julian Jakobsen, Kjetill S. Olsen, Esben Moland Jentoft, Sissel |
author_facet |
Barth, Julia M. I. Villegas Ríos, David Freitas, Carla Moland, Even Star, Bastiaan André, Carl Knutsen, Halvor Bradbury, Ian Dierking, Jan Petereit, Christoph Righton, David Metcalfe, Julian Jakobsen, Kjetill S. Olsen, Esben Moland Jentoft, Sissel |
author_sort |
Barth, Julia M. I. |
title |
Disentangling structural genomic and behavioural barriers in a sea of connectivity |
title_short |
Disentangling structural genomic and behavioural barriers in a sea of connectivity |
title_full |
Disentangling structural genomic and behavioural barriers in a sea of connectivity |
title_fullStr |
Disentangling structural genomic and behavioural barriers in a sea of connectivity |
title_full_unstemmed |
Disentangling structural genomic and behavioural barriers in a sea of connectivity |
title_sort |
disentangling structural genomic and behavioural barriers in a sea of connectivity |
publisher |
John Wiley & Sons |
publishDate |
2019 |
url |
http://hdl.handle.net/10261/185455 https://doi.org/10.1111/mec.15010 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
Publisher's version https://doi.org/10.1111/mec.15010 Sí Molecular Ecology 28(6): 1394–1411 (2019) 0962-1083 http://hdl.handle.net/10261/185455 doi:10.1111/mec.15010 1365-294X 30633410 |
op_rights |
open |
op_doi |
https://doi.org/10.1111/mec.15010 |
container_title |
Molecular Ecology |
container_volume |
28 |
container_issue |
6 |
container_start_page |
1394 |
op_container_end_page |
1411 |
_version_ |
1790597824383025152 |