Data from: Characterizing neutral and adaptive genomic differentiation in a changing climate: the most northerly freshwater fish as a model
Arctic freshwater ecosystems have been profoundly affected by climate change. Given that the Arctic charr (Salvelinus alpinus) is often the only fish species inhabiting these ecosystems, it represents a valuable model for studying the impacts of climate change on species life history diversity and a...
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ftdryad:oai:v1.datadryad.org:10255/dryad.201362 2023-05-15T14:30:03+02:00 Data from: Characterizing neutral and adaptive genomic differentiation in a changing climate: the most northerly freshwater fish as a model OMalley, Kathleen G. Vaux, Felix Black, Andrew N. Svalbard 2019-01-18T20:03:19Z http://hdl.handle.net/10255/dryad.201362 https://doi.org/10.5061/dryad.8hq6qv2 unknown doi:10.5061/dryad.8hq6qv2/1 doi:10.5061/dryad.8hq6qv2/2 doi:10.5061/dryad.8hq6qv2/3 doi:10.5061/dryad.8hq6qv2/4 doi:10.5061/dryad.8hq6qv2/5 doi:10.5061/dryad.8hq6qv2/6 doi:10.5061/dryad.8hq6qv2/7 doi:10.5061/dryad.8hq6qv2/8 doi:10.5061/dryad.8hq6qv2/9 doi:10.5061/dryad.8hq6qv2/10 doi:10.1002/ece3.4891 doi:10.5061/dryad.8hq6qv2 O'Malley KG, Vaux F, Black AN (2019) Characterizing neutral and adaptive genomic differentiation in a changing climate: The most northerly freshwater fish as a model. Ecology and Evolution 9(4): 2004-2017. http://hdl.handle.net/10255/dryad.201362 Arctic charr climate change genotyping-by-sequencing population genomics salmonids Article 2019 ftdryad https://doi.org/10.5061/dryad.8hq6qv2 https://doi.org/10.5061/dryad.8hq6qv2/1 https://doi.org/10.5061/dryad.8hq6qv2/2 https://doi.org/10.5061/dryad.8hq6qv2/3 https://doi.org/10.5061/dryad.8hq6qv2/4 https://doi.org/10.5061/dryad.8hq6qv2/5 https 2020-01-01T16:20:36Z Arctic freshwater ecosystems have been profoundly affected by climate change. Given that the Arctic charr (Salvelinus alpinus) is often the only fish species inhabiting these ecosystems, it represents a valuable model for studying the impacts of climate change on species life history diversity and adaptability. Using a genotyping-by-sequencing approach, we identified 5976 neutral single nucleotide polymorphisms (SNPs) and found evidence for reduced gene flow between allopatric morphs from two high Arctic lakes, Linne´vatn (Anadromous, Normal, and Dwarf) and Ellasjøen (Littoral and Pelagic). Within each lake, the degree of genetic differentiation ranged from low (Pelagic vs. Littoral) to moderate (Anadromous and Normal vs. Dwarf). We identified 17 highly diagnostic, putative adaptive SNPs that differentiated the allopatric morphs. Although we found no evidence for adaptive differences between morphs within Ellasjøen, we found evidence for moderate (Anadromous vs. Normal) to high genetic differentiation (Anadromous and Normal vs. Dwarf) among morphs within Linne´vatn based on two adaptive loci. As these freshwater ecosystems become more productive, the frequency of sympatric morphs in Ellasjøen will likely shift based on foraging opportunities, whereas the propensity to migrate may decrease in Linne´vatn, increasing the frequency of the Normal morph. The Dwarf charr was the most genetically distinct group. Identifying the biological basis for small body size should elucidate the potential for increased growth and subsequent interbreeding with sympatric morphs. Overall, neutral and adaptive genomic differentiation between allopatric and some sympatric morphs suggests that the response of Arctic charr to climate change will be variable across freshwater ecosystems. Article in Journal/Newspaper Arctic charr Arctic Climate change Salvelinus alpinus Svalbard Dryad Digital Repository (Duke University) Arctic Svalbard Vatn ENVELOPE(-19.408,-19.408,65.956,65.956) Ellasjøen ENVELOPE(19.031,19.031,74.388,74.388) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Arctic charr climate change genotyping-by-sequencing population genomics salmonids |
spellingShingle |
Arctic charr climate change genotyping-by-sequencing population genomics salmonids OMalley, Kathleen G. Vaux, Felix Black, Andrew N. Data from: Characterizing neutral and adaptive genomic differentiation in a changing climate: the most northerly freshwater fish as a model |
topic_facet |
Arctic charr climate change genotyping-by-sequencing population genomics salmonids |
description |
Arctic freshwater ecosystems have been profoundly affected by climate change. Given that the Arctic charr (Salvelinus alpinus) is often the only fish species inhabiting these ecosystems, it represents a valuable model for studying the impacts of climate change on species life history diversity and adaptability. Using a genotyping-by-sequencing approach, we identified 5976 neutral single nucleotide polymorphisms (SNPs) and found evidence for reduced gene flow between allopatric morphs from two high Arctic lakes, Linne´vatn (Anadromous, Normal, and Dwarf) and Ellasjøen (Littoral and Pelagic). Within each lake, the degree of genetic differentiation ranged from low (Pelagic vs. Littoral) to moderate (Anadromous and Normal vs. Dwarf). We identified 17 highly diagnostic, putative adaptive SNPs that differentiated the allopatric morphs. Although we found no evidence for adaptive differences between morphs within Ellasjøen, we found evidence for moderate (Anadromous vs. Normal) to high genetic differentiation (Anadromous and Normal vs. Dwarf) among morphs within Linne´vatn based on two adaptive loci. As these freshwater ecosystems become more productive, the frequency of sympatric morphs in Ellasjøen will likely shift based on foraging opportunities, whereas the propensity to migrate may decrease in Linne´vatn, increasing the frequency of the Normal morph. The Dwarf charr was the most genetically distinct group. Identifying the biological basis for small body size should elucidate the potential for increased growth and subsequent interbreeding with sympatric morphs. Overall, neutral and adaptive genomic differentiation between allopatric and some sympatric morphs suggests that the response of Arctic charr to climate change will be variable across freshwater ecosystems. |
format |
Article in Journal/Newspaper |
author |
OMalley, Kathleen G. Vaux, Felix Black, Andrew N. |
author_facet |
OMalley, Kathleen G. Vaux, Felix Black, Andrew N. |
author_sort |
OMalley, Kathleen G. |
title |
Data from: Characterizing neutral and adaptive genomic differentiation in a changing climate: the most northerly freshwater fish as a model |
title_short |
Data from: Characterizing neutral and adaptive genomic differentiation in a changing climate: the most northerly freshwater fish as a model |
title_full |
Data from: Characterizing neutral and adaptive genomic differentiation in a changing climate: the most northerly freshwater fish as a model |
title_fullStr |
Data from: Characterizing neutral and adaptive genomic differentiation in a changing climate: the most northerly freshwater fish as a model |
title_full_unstemmed |
Data from: Characterizing neutral and adaptive genomic differentiation in a changing climate: the most northerly freshwater fish as a model |
title_sort |
data from: characterizing neutral and adaptive genomic differentiation in a changing climate: the most northerly freshwater fish as a model |
publishDate |
2019 |
url |
http://hdl.handle.net/10255/dryad.201362 https://doi.org/10.5061/dryad.8hq6qv2 |
op_coverage |
Svalbard |
long_lat |
ENVELOPE(-19.408,-19.408,65.956,65.956) ENVELOPE(19.031,19.031,74.388,74.388) |
geographic |
Arctic Svalbard Vatn Ellasjøen |
geographic_facet |
Arctic Svalbard Vatn Ellasjøen |
genre |
Arctic charr Arctic Climate change Salvelinus alpinus Svalbard |
genre_facet |
Arctic charr Arctic Climate change Salvelinus alpinus Svalbard |
op_relation |
doi:10.5061/dryad.8hq6qv2/1 doi:10.5061/dryad.8hq6qv2/2 doi:10.5061/dryad.8hq6qv2/3 doi:10.5061/dryad.8hq6qv2/4 doi:10.5061/dryad.8hq6qv2/5 doi:10.5061/dryad.8hq6qv2/6 doi:10.5061/dryad.8hq6qv2/7 doi:10.5061/dryad.8hq6qv2/8 doi:10.5061/dryad.8hq6qv2/9 doi:10.5061/dryad.8hq6qv2/10 doi:10.1002/ece3.4891 doi:10.5061/dryad.8hq6qv2 O'Malley KG, Vaux F, Black AN (2019) Characterizing neutral and adaptive genomic differentiation in a changing climate: The most northerly freshwater fish as a model. Ecology and Evolution 9(4): 2004-2017. http://hdl.handle.net/10255/dryad.201362 |
op_doi |
https://doi.org/10.5061/dryad.8hq6qv2 https://doi.org/10.5061/dryad.8hq6qv2/1 https://doi.org/10.5061/dryad.8hq6qv2/2 https://doi.org/10.5061/dryad.8hq6qv2/3 https://doi.org/10.5061/dryad.8hq6qv2/4 https://doi.org/10.5061/dryad.8hq6qv2/5 https |
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1766303974104760320 |