Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs
Publisher's version (útgefin grein) The availability of diverse ecological niches can promote adaptation of trophic specializations and related traits, as has been repeatedly observed in evolutionary radiations of freshwater fish. The role of genetics, environment, and history in ecologically d...
Published in: | Ecology and Evolution |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hdl.handle.net/20.500.11815/1434 https://doi.org/10.1002/ece3.5516 |
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ftopinvisindi:oai:opinvisindi.is:20.500.11815/1434 2023-05-15T14:26:14+02:00 Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs Guðbrandsson, Jóhannes Kapralova, Kalina Franzdottir, Sigridur Rut Bergsveinsdóttir, Þóra Margrét Hafstað, Völundur Jónsson, Zophonías Oddur Snorrason, Sigurður S. Palsson, Arnar Líf- og umhverfisvísindastofnun (HÍ) Institute of Life and Environmental Sciences (UI) Lífvísindasetur (HÍ) Biomedical Center (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland 2019-09-12 10964-10983 https://hdl.handle.net/20.500.11815/1434 https://doi.org/10.1002/ece3.5516 en eng Wiley Ecology and Evolution;9 https://www.biorxiv.org/content/10.1101/489104v2 Guðbrandsson, J., Kapralova, K. H., Franzdóttir, S. R., Bergsveinsdóttir, Þ. M., Hafstað, V., Jónsson, Z. O., . . . Pálsson, A. (2019). Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs. 9(19), 10964-10983. doi:10.1002/ece3.5516 2045-7758 https://hdl.handle.net/20.500.11815/1434 Ecology and Evolution doi:10.1002/ece3.5516 info:eu-repo/semantics/openAccess Genetic variability Lake Thingvallavatn Pooled sequencing RNA‐Seq Salvelinus alpinus Erfðabreytileiki RNA kjarnsýra Bleikja Þingvallavatn Ferskvatnsfiskar Vistfræði info:eu-repo/semantics/article 2019 ftopinvisindi https://doi.org/20.500.11815/1434 https://doi.org/10.1002/ece3.5516 2022-11-18T06:51:48Z Publisher's version (útgefin grein) The availability of diverse ecological niches can promote adaptation of trophic specializations and related traits, as has been repeatedly observed in evolutionary radiations of freshwater fish. The role of genetics, environment, and history in ecologically driven divergence and adaptation, can be studied on adaptive radiations or populations showing ecological polymorphism. Salmonids, especially the Salvelinus genus, are renowned for both phenotypic diversity and polymorphism. Arctic charr (Salvelinus alpinus) invaded Icelandic streams during the glacial retreat (about 10,000 years ago) and exhibits many instances of sympatric polymorphism. Particularly, well studied are the four morphs in Lake Þingvallavatn in Iceland. The small benthic (SB), large benthic (LB), planktivorous (PL), and piscivorous (PI) charr differ in many regards, including size, form, and life history traits. To investigate relatedness and genomic differentiation between morphs, we identified variable sites from RNA‐sequencing data from three of those morphs and verified 22 variants in population samples. The data reveal genetic differences between the morphs, with the two benthic morphs being more similar and the PL‐charr more genetically different. The markers with high differentiation map to all linkage groups, suggesting ancient and pervasive genetic separation of these three morphs. Furthermore, GO analyses suggest differences in collagen metabolism, odontogenesis, and sensory systems between PL‐charr and the benthic morphs. Genotyping in population samples from all four morphs confirms the genetic separation and indicates that the PI‐charr are less genetically distinct than the other three morphs. The genetic separation of the other three morphs indicates certain degree of reproductive isolation. The extent of gene flow between the morphs and the nature of reproductive barriers between them remain to be elucidated. This project was supported by The Icelandic Center for Research (RANNIS ... Article in Journal/Newspaper Arctic Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn Opin vísindi (Iceland) Arctic Þingvallavatn ENVELOPE(-21.150,-21.150,64.183,64.183) Ecology and Evolution 9 19 10964 10983 |
institution |
Open Polar |
collection |
Opin vísindi (Iceland) |
op_collection_id |
ftopinvisindi |
language |
English |
topic |
Genetic variability Lake Thingvallavatn Pooled sequencing RNA‐Seq Salvelinus alpinus Erfðabreytileiki RNA kjarnsýra Bleikja Þingvallavatn Ferskvatnsfiskar Vistfræði |
spellingShingle |
Genetic variability Lake Thingvallavatn Pooled sequencing RNA‐Seq Salvelinus alpinus Erfðabreytileiki RNA kjarnsýra Bleikja Þingvallavatn Ferskvatnsfiskar Vistfræði Guðbrandsson, Jóhannes Kapralova, Kalina Franzdottir, Sigridur Rut Bergsveinsdóttir, Þóra Margrét Hafstað, Völundur Jónsson, Zophonías Oddur Snorrason, Sigurður S. Palsson, Arnar Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs |
topic_facet |
Genetic variability Lake Thingvallavatn Pooled sequencing RNA‐Seq Salvelinus alpinus Erfðabreytileiki RNA kjarnsýra Bleikja Þingvallavatn Ferskvatnsfiskar Vistfræði |
description |
Publisher's version (útgefin grein) The availability of diverse ecological niches can promote adaptation of trophic specializations and related traits, as has been repeatedly observed in evolutionary radiations of freshwater fish. The role of genetics, environment, and history in ecologically driven divergence and adaptation, can be studied on adaptive radiations or populations showing ecological polymorphism. Salmonids, especially the Salvelinus genus, are renowned for both phenotypic diversity and polymorphism. Arctic charr (Salvelinus alpinus) invaded Icelandic streams during the glacial retreat (about 10,000 years ago) and exhibits many instances of sympatric polymorphism. Particularly, well studied are the four morphs in Lake Þingvallavatn in Iceland. The small benthic (SB), large benthic (LB), planktivorous (PL), and piscivorous (PI) charr differ in many regards, including size, form, and life history traits. To investigate relatedness and genomic differentiation between morphs, we identified variable sites from RNA‐sequencing data from three of those morphs and verified 22 variants in population samples. The data reveal genetic differences between the morphs, with the two benthic morphs being more similar and the PL‐charr more genetically different. The markers with high differentiation map to all linkage groups, suggesting ancient and pervasive genetic separation of these three morphs. Furthermore, GO analyses suggest differences in collagen metabolism, odontogenesis, and sensory systems between PL‐charr and the benthic morphs. Genotyping in population samples from all four morphs confirms the genetic separation and indicates that the PI‐charr are less genetically distinct than the other three morphs. The genetic separation of the other three morphs indicates certain degree of reproductive isolation. The extent of gene flow between the morphs and the nature of reproductive barriers between them remain to be elucidated. This project was supported by The Icelandic Center for Research (RANNIS ... |
author2 |
Líf- og umhverfisvísindastofnun (HÍ) Institute of Life and Environmental Sciences (UI) Lífvísindasetur (HÍ) Biomedical Center (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland |
format |
Article in Journal/Newspaper |
author |
Guðbrandsson, Jóhannes Kapralova, Kalina Franzdottir, Sigridur Rut Bergsveinsdóttir, Þóra Margrét Hafstað, Völundur Jónsson, Zophonías Oddur Snorrason, Sigurður S. Palsson, Arnar |
author_facet |
Guðbrandsson, Jóhannes Kapralova, Kalina Franzdottir, Sigridur Rut Bergsveinsdóttir, Þóra Margrét Hafstað, Völundur Jónsson, Zophonías Oddur Snorrason, Sigurður S. Palsson, Arnar |
author_sort |
Guðbrandsson, Jóhannes |
title |
Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs |
title_short |
Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs |
title_full |
Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs |
title_fullStr |
Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs |
title_full_unstemmed |
Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs |
title_sort |
extensive genetic differentiation between recently evolved sympatric arctic charr morphs |
publisher |
Wiley |
publishDate |
2019 |
url |
https://hdl.handle.net/20.500.11815/1434 https://doi.org/10.1002/ece3.5516 |
long_lat |
ENVELOPE(-21.150,-21.150,64.183,64.183) |
geographic |
Arctic Þingvallavatn |
geographic_facet |
Arctic Þingvallavatn |
genre |
Arctic Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn |
genre_facet |
Arctic Arctic charr Arctic Iceland Salvelinus alpinus Þingvallavatn |
op_relation |
Ecology and Evolution;9 https://www.biorxiv.org/content/10.1101/489104v2 Guðbrandsson, J., Kapralova, K. H., Franzdóttir, S. R., Bergsveinsdóttir, Þ. M., Hafstað, V., Jónsson, Z. O., . . . Pálsson, A. (2019). Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs. 9(19), 10964-10983. doi:10.1002/ece3.5516 2045-7758 https://hdl.handle.net/20.500.11815/1434 Ecology and Evolution doi:10.1002/ece3.5516 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11815/1434 https://doi.org/10.1002/ece3.5516 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
19 |
container_start_page |
10964 |
op_container_end_page |
10983 |
_version_ |
1766298708865974272 |