Diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of European whitefish
Adaptive radiation is the evolution of ecological and phenotypical diversity. It arises via ecological opportunity that promotes the exploration of underutilized or novel niches mediating specialization and reproductive isolation. The assumed precondition for rapid local adaptation is diversifying n...
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Online Access: | http://hdl.handle.net/11250/2581525 https://doi.org/10.1002/ece3.3876 |
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fthsinnlandet:oai:brage.inn.no:11250/2581525 2024-03-03T08:44:17+00:00 Diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of European whitefish Häkli, Katja Østbye, Kjartan Kahilainen, Kimmo Kalevi Amundsen, Per-Arne Præbel, Kim 2018 application/pdf http://hdl.handle.net/11250/2581525 https://doi.org/10.1002/ece3.3876 eng eng Norges forskningsråd: 186320 EU/European Regional Developmental Fund (A30205) Norges forskningsråd: 183984 Universitetet i Tromsø: Publication Fund Ecology and Evolution. 2018, 8 (5), 2617-2631. urn:issn:2045-7758 http://hdl.handle.net/11250/2581525 https://doi.org/10.1002/ece3.3876 cristin:1562726 2617-2631 8 Ecology and Evolution 5 Peer reviewed Journal article 2018 fthsinnlandet https://doi.org/10.1002/ece3.3876 2024-02-02T12:42:30Z Adaptive radiation is the evolution of ecological and phenotypical diversity. It arises via ecological opportunity that promotes the exploration of underutilized or novel niches mediating specialization and reproductive isolation. The assumed precondition for rapid local adaptation is diversifying natural selection, but random genetic drift could also be a major driver of this process. We used 27 populations of European whitefish (Coregonus lavaretus) from nine lakes distributed in three neighboring subarctic watercourses in northern Fennoscandia as a model to test the importance of random drift versus diversifying natural selection for parallel evolution of adaptive phenotypic traits. We contrasted variation for two key adaptive phenotypic traits correlated with resource utilization of polymorphic fish; the number of gill rakers and the total length of fish, with the posterior distribution of neutral genetic differentiation from 13 microsatellite loci, to test whether the observed phenotypic divergence could be achieved by random genetic drift alone. Our results show that both traits have been under diversifying selection and that the evolution of these morphs has been driven by isolation through habitat adaptations. We conclude that diversifying selection acting on gill raker number and body size has played a significant role in the ongoing adaptive radiation of European whitefish morphs in this region. publishedVersion Article in Journal/Newspaper Fennoscandia Subarctic Høgskolen i Innlandet: Brage INN Ecology and Evolution 8 5 2617 2631 |
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Høgskolen i Innlandet: Brage INN |
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English |
description |
Adaptive radiation is the evolution of ecological and phenotypical diversity. It arises via ecological opportunity that promotes the exploration of underutilized or novel niches mediating specialization and reproductive isolation. The assumed precondition for rapid local adaptation is diversifying natural selection, but random genetic drift could also be a major driver of this process. We used 27 populations of European whitefish (Coregonus lavaretus) from nine lakes distributed in three neighboring subarctic watercourses in northern Fennoscandia as a model to test the importance of random drift versus diversifying natural selection for parallel evolution of adaptive phenotypic traits. We contrasted variation for two key adaptive phenotypic traits correlated with resource utilization of polymorphic fish; the number of gill rakers and the total length of fish, with the posterior distribution of neutral genetic differentiation from 13 microsatellite loci, to test whether the observed phenotypic divergence could be achieved by random genetic drift alone. Our results show that both traits have been under diversifying selection and that the evolution of these morphs has been driven by isolation through habitat adaptations. We conclude that diversifying selection acting on gill raker number and body size has played a significant role in the ongoing adaptive radiation of European whitefish morphs in this region. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Häkli, Katja Østbye, Kjartan Kahilainen, Kimmo Kalevi Amundsen, Per-Arne Præbel, Kim |
spellingShingle |
Häkli, Katja Østbye, Kjartan Kahilainen, Kimmo Kalevi Amundsen, Per-Arne Præbel, Kim Diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of European whitefish |
author_facet |
Häkli, Katja Østbye, Kjartan Kahilainen, Kimmo Kalevi Amundsen, Per-Arne Præbel, Kim |
author_sort |
Häkli, Katja |
title |
Diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of European whitefish |
title_short |
Diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of European whitefish |
title_full |
Diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of European whitefish |
title_fullStr |
Diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of European whitefish |
title_full_unstemmed |
Diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of European whitefish |
title_sort |
diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of european whitefish |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2581525 https://doi.org/10.1002/ece3.3876 |
genre |
Fennoscandia Subarctic |
genre_facet |
Fennoscandia Subarctic |
op_source |
2617-2631 8 Ecology and Evolution 5 |
op_relation |
Norges forskningsråd: 186320 EU/European Regional Developmental Fund (A30205) Norges forskningsråd: 183984 Universitetet i Tromsø: Publication Fund Ecology and Evolution. 2018, 8 (5), 2617-2631. urn:issn:2045-7758 http://hdl.handle.net/11250/2581525 https://doi.org/10.1002/ece3.3876 cristin:1562726 |
op_doi |
https://doi.org/10.1002/ece3.3876 |
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Ecology and Evolution |
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8 |
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5 |
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2617 |
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2631 |
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1792499774079893504 |