Data from: Disentangling structural genomic and behavioral barriers in a sea of connectivity
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 inversio...
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ftdryad:oai:v1.datadryad.org:10255/dryad.202326 2023-05-15T15:26:58+02:00 Data from: Disentangling structural genomic and behavioral 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 M. Jentoft, Sissel Atlantic North Sea Baltic Sea Holocene 2018-12-28T17:03:14Z http://hdl.handle.net/10255/dryad.202326 https://doi.org/10.5061/dryad.d9c48b6 unknown doi:10.5061/dryad.d9c48b6/1 doi:10.5061/dryad.d9c48b6/2 doi:10.5061/dryad.d9c48b6/3 doi:10.1111/mec.15010 doi:10.5061/dryad.d9c48b6 Barth JMI, Villegas‐Ríos D, Freitas C, Moland E, Star B, André C, Knutsen H, Bradbury I, Dierking J, Petereit C, Righton D, Metcalfe J, Jakobsen KS, Olsen EM, Jentoft S (2019) Disentangling structural genomic and behavioural barriers in a sea of connectivity. Molecular Ecology 28(6): 1394-1411. http://hdl.handle.net/10255/dryad.202326 chromosomal rearrangements gene flow sympatric ecotypes adaptation behavioral traits Atlantic cod Article 2018 ftdryad https://doi.org/10.5061/dryad.d9c48b6 https://doi.org/10.5061/dryad.d9c48b6/1 https://doi.org/10.5061/dryad.d9c48b6/2 https://doi.org/10.5061/dryad.d9c48b6/3 https://doi.org/10.1111/mec.15010 2020-01-01T16:19:58Z 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 whether inversions play a role in the divergence of connected populations of the marine fish Atlantic cod, by exploring a unique dataset combining whole-genome sequencing data and behavioral 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 behavioral tracking over four years 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, indicative for an adaptive barrier to gene flow. In addition, behavioral 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 behavioral barrier to gene flow. Our results provide the first insights into a complex interplay of genomic and behavioral isolating barriers in Atlantic cod and establish a new model system towards an understanding of the role of genomic structural variants in adaptation and diversification. Article in Journal/Newspaper atlantic cod Dryad Digital Repository (Duke University) |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
chromosomal rearrangements gene flow sympatric ecotypes adaptation behavioral traits Atlantic cod |
spellingShingle |
chromosomal rearrangements gene flow sympatric ecotypes adaptation behavioral traits Atlantic cod 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 M. Jentoft, Sissel Data from: Disentangling structural genomic and behavioral barriers in a sea of connectivity |
topic_facet |
chromosomal rearrangements gene flow sympatric ecotypes adaptation behavioral traits Atlantic cod |
description |
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 whether inversions play a role in the divergence of connected populations of the marine fish Atlantic cod, by exploring a unique dataset combining whole-genome sequencing data and behavioral 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 behavioral tracking over four years 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, indicative for an adaptive barrier to gene flow. In addition, behavioral 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 behavioral barrier to gene flow. Our results provide the first insights into a complex interplay of genomic and behavioral isolating barriers in Atlantic cod and establish a new model system towards an understanding of the role of genomic structural variants in adaptation and diversification. |
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 M. 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 M. Jentoft, Sissel |
author_sort |
Barth, Julia M. I. |
title |
Data from: Disentangling structural genomic and behavioral barriers in a sea of connectivity |
title_short |
Data from: Disentangling structural genomic and behavioral barriers in a sea of connectivity |
title_full |
Data from: Disentangling structural genomic and behavioral barriers in a sea of connectivity |
title_fullStr |
Data from: Disentangling structural genomic and behavioral barriers in a sea of connectivity |
title_full_unstemmed |
Data from: Disentangling structural genomic and behavioral barriers in a sea of connectivity |
title_sort |
data from: disentangling structural genomic and behavioral barriers in a sea of connectivity |
publishDate |
2018 |
url |
http://hdl.handle.net/10255/dryad.202326 https://doi.org/10.5061/dryad.d9c48b6 |
op_coverage |
Atlantic North Sea Baltic Sea Holocene |
genre |
atlantic cod |
genre_facet |
atlantic cod |
op_relation |
doi:10.5061/dryad.d9c48b6/1 doi:10.5061/dryad.d9c48b6/2 doi:10.5061/dryad.d9c48b6/3 doi:10.1111/mec.15010 doi:10.5061/dryad.d9c48b6 Barth JMI, Villegas‐Ríos D, Freitas C, Moland E, Star B, André C, Knutsen H, Bradbury I, Dierking J, Petereit C, Righton D, Metcalfe J, Jakobsen KS, Olsen EM, Jentoft S (2019) Disentangling structural genomic and behavioural barriers in a sea of connectivity. Molecular Ecology 28(6): 1394-1411. http://hdl.handle.net/10255/dryad.202326 |
op_doi |
https://doi.org/10.5061/dryad.d9c48b6 https://doi.org/10.5061/dryad.d9c48b6/1 https://doi.org/10.5061/dryad.d9c48b6/2 https://doi.org/10.5061/dryad.d9c48b6/3 https://doi.org/10.1111/mec.15010 |
_version_ |
1766357432540332032 |