Data from: Genome architecture enables local adaptation of Atlantic cod despite high connectivity
Adaptation to local conditions is a fundamental process in evolution; however, mechanisms maintaining local adaptation despite high gene flow are still poorly understood. Marine ecosystems provide a wide array of diverse habitats that frequently promote ecological adaptation even in species characte...
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ftdryad:oai:v1.datadryad.org:10255/dryad.147252 2023-05-15T15:27:04+02:00 Data from: Genome architecture enables local adaptation of Atlantic cod despite high connectivity Barth, Julia M. I. Berg, Paul R. Jonsson, Per R. Bonanomi, Sara Corell, Hanna Hemmer-Hansen, Jakob Jakobsen, Kjetill S. Johannesson, Kerstin Jorde, Per Erik Knutsen, Halvor Moksnes, Per-Olav Star, Bastiaan Stenseth, Nils Chr. Svedäng, Henrik Jentoft, Sissel André, Carl North Sea Skagerrak Kattegat western Baltic Sea 2017-06-15T05:18:20Z http://hdl.handle.net/10255/dryad.147252 https://doi.org/10.5061/dryad.3f1c8 unknown doi:10.5061/dryad.3f1c8/1 doi:10.5061/dryad.3f1c8/2 doi:10.1111/mec.14207 doi:10.5061/dryad.3f1c8 Barth JMI, Berg PR, Jonsson PR, Bonanomi S, Corell H, Hemmer-Hansen J, Jakobsen KS, Johannesson K, Jorde PE, Knutsen H, Moksnes P, Star B, Stenseth NC, Svedäng H, Jentoft S, André C (2017) Genome architecture enables local adaptation of Atlantic cod despite high connectivity. Molecular Ecology 26(17): 4452-4466. 0962-1083 http://hdl.handle.net/10255/dryad.147252 Population Divergence Gene Flow Ecological Adaptation Chromosomal Inversion Biophysical Modeling Article 2017 ftdryad https://doi.org/10.5061/dryad.3f1c8 https://doi.org/10.5061/dryad.3f1c8/1 https://doi.org/10.5061/dryad.3f1c8/2 https://doi.org/10.1111/mec.14207 2020-01-01T15:51:41Z Adaptation to local conditions is a fundamental process in evolution; however, mechanisms maintaining local adaptation despite high gene flow are still poorly understood. Marine ecosystems provide a wide array of diverse habitats that frequently promote ecological adaptation even in species characterized by strong levels of gene flow. As one example, populations of the marine fish Atlantic cod (Gadus morhua) are highly connected due to immense dispersal capabilities but nevertheless show local adaptation in several key traits. By combining population genomic analyses based on 12K single nucleotide polymorphisms with larval dispersal patterns inferred using a biophysical ocean model, we show that Atlantic cod individuals residing in sheltered estuarine habitats of Scandinavian fjords mainly belong to offshore oceanic populations with considerable connectivity between these diverse ecosystems. Nevertheless, we also find evidence for discrete fjord populations that are genetically differentiated from offshore populations, indicative of local adaptation, the degree of which appears to be influenced by connectivity. Analyses of the genomic architecture reveal a significant overrepresentation of a large ~5 Mb chromosomal rearrangement in fjord cod, previously proposed to comprise genes critical for the survival at low salinities. This suggests that despite considerable connectivity with offshore populations, local adaptation to fjord environments may be enabled by suppression of recombination in the rearranged region. Our study provides new insights into the potential of local adaptation in high gene flow species within fine geographical scales and highlights the importance of genome architecture in analyses of ecological adaptation. Article in Journal/Newspaper atlantic cod Gadus morhua Dryad Digital Repository (Duke University) Kattegat ENVELOPE(9.692,9.692,63.563,63.563) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Population Divergence Gene Flow Ecological Adaptation Chromosomal Inversion Biophysical Modeling |
spellingShingle |
Population Divergence Gene Flow Ecological Adaptation Chromosomal Inversion Biophysical Modeling Barth, Julia M. I. Berg, Paul R. Jonsson, Per R. Bonanomi, Sara Corell, Hanna Hemmer-Hansen, Jakob Jakobsen, Kjetill S. Johannesson, Kerstin Jorde, Per Erik Knutsen, Halvor Moksnes, Per-Olav Star, Bastiaan Stenseth, Nils Chr. Svedäng, Henrik Jentoft, Sissel André, Carl Data from: Genome architecture enables local adaptation of Atlantic cod despite high connectivity |
topic_facet |
Population Divergence Gene Flow Ecological Adaptation Chromosomal Inversion Biophysical Modeling |
description |
Adaptation to local conditions is a fundamental process in evolution; however, mechanisms maintaining local adaptation despite high gene flow are still poorly understood. Marine ecosystems provide a wide array of diverse habitats that frequently promote ecological adaptation even in species characterized by strong levels of gene flow. As one example, populations of the marine fish Atlantic cod (Gadus morhua) are highly connected due to immense dispersal capabilities but nevertheless show local adaptation in several key traits. By combining population genomic analyses based on 12K single nucleotide polymorphisms with larval dispersal patterns inferred using a biophysical ocean model, we show that Atlantic cod individuals residing in sheltered estuarine habitats of Scandinavian fjords mainly belong to offshore oceanic populations with considerable connectivity between these diverse ecosystems. Nevertheless, we also find evidence for discrete fjord populations that are genetically differentiated from offshore populations, indicative of local adaptation, the degree of which appears to be influenced by connectivity. Analyses of the genomic architecture reveal a significant overrepresentation of a large ~5 Mb chromosomal rearrangement in fjord cod, previously proposed to comprise genes critical for the survival at low salinities. This suggests that despite considerable connectivity with offshore populations, local adaptation to fjord environments may be enabled by suppression of recombination in the rearranged region. Our study provides new insights into the potential of local adaptation in high gene flow species within fine geographical scales and highlights the importance of genome architecture in analyses of ecological adaptation. |
format |
Article in Journal/Newspaper |
author |
Barth, Julia M. I. Berg, Paul R. Jonsson, Per R. Bonanomi, Sara Corell, Hanna Hemmer-Hansen, Jakob Jakobsen, Kjetill S. Johannesson, Kerstin Jorde, Per Erik Knutsen, Halvor Moksnes, Per-Olav Star, Bastiaan Stenseth, Nils Chr. Svedäng, Henrik Jentoft, Sissel André, Carl |
author_facet |
Barth, Julia M. I. Berg, Paul R. Jonsson, Per R. Bonanomi, Sara Corell, Hanna Hemmer-Hansen, Jakob Jakobsen, Kjetill S. Johannesson, Kerstin Jorde, Per Erik Knutsen, Halvor Moksnes, Per-Olav Star, Bastiaan Stenseth, Nils Chr. Svedäng, Henrik Jentoft, Sissel André, Carl |
author_sort |
Barth, Julia M. I. |
title |
Data from: Genome architecture enables local adaptation of Atlantic cod despite high connectivity |
title_short |
Data from: Genome architecture enables local adaptation of Atlantic cod despite high connectivity |
title_full |
Data from: Genome architecture enables local adaptation of Atlantic cod despite high connectivity |
title_fullStr |
Data from: Genome architecture enables local adaptation of Atlantic cod despite high connectivity |
title_full_unstemmed |
Data from: Genome architecture enables local adaptation of Atlantic cod despite high connectivity |
title_sort |
data from: genome architecture enables local adaptation of atlantic cod despite high connectivity |
publishDate |
2017 |
url |
http://hdl.handle.net/10255/dryad.147252 https://doi.org/10.5061/dryad.3f1c8 |
op_coverage |
North Sea Skagerrak Kattegat western Baltic Sea |
long_lat |
ENVELOPE(9.692,9.692,63.563,63.563) |
geographic |
Kattegat |
geographic_facet |
Kattegat |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
doi:10.5061/dryad.3f1c8/1 doi:10.5061/dryad.3f1c8/2 doi:10.1111/mec.14207 doi:10.5061/dryad.3f1c8 Barth JMI, Berg PR, Jonsson PR, Bonanomi S, Corell H, Hemmer-Hansen J, Jakobsen KS, Johannesson K, Jorde PE, Knutsen H, Moksnes P, Star B, Stenseth NC, Svedäng H, Jentoft S, André C (2017) Genome architecture enables local adaptation of Atlantic cod despite high connectivity. Molecular Ecology 26(17): 4452-4466. 0962-1083 http://hdl.handle.net/10255/dryad.147252 |
op_doi |
https://doi.org/10.5061/dryad.3f1c8 https://doi.org/10.5061/dryad.3f1c8/1 https://doi.org/10.5061/dryad.3f1c8/2 https://doi.org/10.1111/mec.14207 |
_version_ |
1766357532915269632 |