Limited genetic parallelism underlies recent, repeated incipient speciation in geographically proximate populations of an Arctic fish (Salvelinus alpinus)
The genetic underpinnings of incipient speciation, including the genomic mechanisms which contribute to morphological and ecological differentiation and reproductive isolation, remain poorly understood. The repeated evolution of consistently, phenotypically distinct morphs of Arctic Charr (Salvelinu...
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ftzenodo:oai:zenodo.org:4086474 2023-05-15T14:29:49+02:00 Limited genetic parallelism underlies recent, repeated incipient speciation in geographically proximate populations of an Arctic fish (Salvelinus alpinus) Salisbury, Sarah J. McCracken, Gregory R. Perry, Robert Keefe, Donald K. S. Layton, Kara Kess, Tony Nugent, Cameron M. Leong, Jong S. Bradbury, Ian R. Koop, Ben F. Ferguson, Moira M. Ruzzante, Daniel E. 2020-09-30 https://zenodo.org/record/4086474 https://doi.org/10.5061/dryad.cz8w9gj1f unknown doi:10.1111/mec.15634 https://zenodo.org/communities/dryad https://zenodo.org/record/4086474 https://doi.org/10.5061/dryad.cz8w9gj1f oai:zenodo.org:4086474 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Arctic charr incipient speciation parallelism paralogs MORPH info:eu-repo/semantics/other dataset 2020 ftzenodo https://doi.org/10.5061/dryad.cz8w9gj1f10.1111/mec.15634 2023-03-10T13:48:18Z The genetic underpinnings of incipient speciation, including the genomic mechanisms which contribute to morphological and ecological differentiation and reproductive isolation, remain poorly understood. The repeated evolution of consistently, phenotypically distinct morphs of Arctic Charr (Salvelinus alpinus) within the Quaternary period offer an ideal model to study the repeatability of evolution at the genomic level. Sympatric morphs of Arctic Charr are found across this species' circumpolar distribution. However, the specific genetic mechanisms driving this morph differentiation are largely unknown despite the cultural and economic importance of the anadromous morph. We used a newly designed 87k SNP chip to investigate the character and consistency of the genomic differences among sympatric morphs within three recently deglaciated and geographically proximate lakes in Labrador, Canada. We found genetically distinct small and large morph Arctic Charr in all three lakes consistent with resident and anadromous morphs, respectively. A degree of reproductive isolation among sympatric morphs is likely given genome-wide distributions of outlier SNPs and high genome-wide FSTs. Across all lakes, outlier SNPs were largely non-overlapping suggesting a lack of genetic parallelism driving morph differentiation. Alternatively, several genes and paralogous copies of the same gene consistently differentiated morphs across multiple lakes suggesting their importance to the manifestation of morphs. Our results confirm the utility of Arctic Charr as a model for investigating the predictability of evolution and support the importance of both genetic parallelism and non-parallelism to the incipient speciation of Arctic Charr morphs. Files consist of genepop files for SNP data. Funding provided by: Natural Sciences and Engineering Research Council of CanadaCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100000038Award Number: 430198 Dataset Arctic charr Arctic Salvelinus alpinus Zenodo Arctic Canada |
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unknown |
topic |
Arctic charr incipient speciation parallelism paralogs MORPH |
spellingShingle |
Arctic charr incipient speciation parallelism paralogs MORPH Salisbury, Sarah J. McCracken, Gregory R. Perry, Robert Keefe, Donald K. S. Layton, Kara Kess, Tony Nugent, Cameron M. Leong, Jong S. Bradbury, Ian R. Koop, Ben F. Ferguson, Moira M. Ruzzante, Daniel E. Limited genetic parallelism underlies recent, repeated incipient speciation in geographically proximate populations of an Arctic fish (Salvelinus alpinus) |
topic_facet |
Arctic charr incipient speciation parallelism paralogs MORPH |
description |
The genetic underpinnings of incipient speciation, including the genomic mechanisms which contribute to morphological and ecological differentiation and reproductive isolation, remain poorly understood. The repeated evolution of consistently, phenotypically distinct morphs of Arctic Charr (Salvelinus alpinus) within the Quaternary period offer an ideal model to study the repeatability of evolution at the genomic level. Sympatric morphs of Arctic Charr are found across this species' circumpolar distribution. However, the specific genetic mechanisms driving this morph differentiation are largely unknown despite the cultural and economic importance of the anadromous morph. We used a newly designed 87k SNP chip to investigate the character and consistency of the genomic differences among sympatric morphs within three recently deglaciated and geographically proximate lakes in Labrador, Canada. We found genetically distinct small and large morph Arctic Charr in all three lakes consistent with resident and anadromous morphs, respectively. A degree of reproductive isolation among sympatric morphs is likely given genome-wide distributions of outlier SNPs and high genome-wide FSTs. Across all lakes, outlier SNPs were largely non-overlapping suggesting a lack of genetic parallelism driving morph differentiation. Alternatively, several genes and paralogous copies of the same gene consistently differentiated morphs across multiple lakes suggesting their importance to the manifestation of morphs. Our results confirm the utility of Arctic Charr as a model for investigating the predictability of evolution and support the importance of both genetic parallelism and non-parallelism to the incipient speciation of Arctic Charr morphs. Files consist of genepop files for SNP data. Funding provided by: Natural Sciences and Engineering Research Council of CanadaCrossref Funder Registry ID: http://dx.doi.org/10.13039/501100000038Award Number: 430198 |
format |
Dataset |
author |
Salisbury, Sarah J. McCracken, Gregory R. Perry, Robert Keefe, Donald K. S. Layton, Kara Kess, Tony Nugent, Cameron M. Leong, Jong S. Bradbury, Ian R. Koop, Ben F. Ferguson, Moira M. Ruzzante, Daniel E. |
author_facet |
Salisbury, Sarah J. McCracken, Gregory R. Perry, Robert Keefe, Donald K. S. Layton, Kara Kess, Tony Nugent, Cameron M. Leong, Jong S. Bradbury, Ian R. Koop, Ben F. Ferguson, Moira M. Ruzzante, Daniel E. |
author_sort |
Salisbury, Sarah J. |
title |
Limited genetic parallelism underlies recent, repeated incipient speciation in geographically proximate populations of an Arctic fish (Salvelinus alpinus) |
title_short |
Limited genetic parallelism underlies recent, repeated incipient speciation in geographically proximate populations of an Arctic fish (Salvelinus alpinus) |
title_full |
Limited genetic parallelism underlies recent, repeated incipient speciation in geographically proximate populations of an Arctic fish (Salvelinus alpinus) |
title_fullStr |
Limited genetic parallelism underlies recent, repeated incipient speciation in geographically proximate populations of an Arctic fish (Salvelinus alpinus) |
title_full_unstemmed |
Limited genetic parallelism underlies recent, repeated incipient speciation in geographically proximate populations of an Arctic fish (Salvelinus alpinus) |
title_sort |
limited genetic parallelism underlies recent, repeated incipient speciation in geographically proximate populations of an arctic fish (salvelinus alpinus) |
publishDate |
2020 |
url |
https://zenodo.org/record/4086474 https://doi.org/10.5061/dryad.cz8w9gj1f |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_relation |
doi:10.1111/mec.15634 https://zenodo.org/communities/dryad https://zenodo.org/record/4086474 https://doi.org/10.5061/dryad.cz8w9gj1f oai:zenodo.org:4086474 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.cz8w9gj1f10.1111/mec.15634 |
_version_ |
1766303776280412160 |