Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations
In the context of global changes, the long-term viability of populations of endangered ectotherms may depend on their adaptive potential and ability to cope with temperature variations. We measured responses of Atlantic salmon embryos from four populations to temperature variations and used a QST–FS...
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2016
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ftunivzuerich:oai:www.zora.uzh.ch:124770 2024-09-30T14:32:23+00:00 Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations Côte, J Roussel, J-M Le Cam, S Guillaume, F Evanno, G 2016 application/pdf https://www.zora.uzh.ch/id/eprint/124770/ https://www.zora.uzh.ch/id/eprint/124770/1/Adaptive%20divergence%20in%20embryonic%20thermal%20plasticit.pdf https://doi.org/10.5167/uzh-124770 https://doi.org/10.1111/jeb.12896 eng eng Wiley-Blackwell Publishing, Inc. https://www.zora.uzh.ch/id/eprint/124770/1/Adaptive%20divergence%20in%20embryonic%20thermal%20plasticit.pdf doi:10.5167/uzh-124770 doi:10.1111/jeb.12896 urn:issn:1010-061X info:eu-repo/semantics/closedAccess Côte, J; Roussel, J-M; Le Cam, S; Guillaume, F; Evanno, G (2016). Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations. Journal of Evolutionary Biology, 29(8):1593-1601. Institute of Evolutionary Biology and Environmental Studies 570 Life sciences biology 590 Animals (Zoology) Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftunivzuerich https://doi.org/10.5167/uzh-12477010.1111/jeb.12896 2024-09-18T00:49:48Z In the context of global changes, the long-term viability of populations of endangered ectotherms may depend on their adaptive potential and ability to cope with temperature variations. We measured responses of Atlantic salmon embryos from four populations to temperature variations and used a QST–FST approach to study the adaptive divergence among these populations. Embryos were reared under two experimental conditions: a low temperature regime at 4 °C until eyed-stage and 10 °C until the end of embryonic development and a high temperature regime with a constant temperature of 10 °C throughout embryonic development. Significant variations among populations and population × temperature interactions were observed for embryo survival, incubation time and length. QST was higher than FST in all but one comparison suggesting an important effect of divergent selection. QST was also higher under the high-temperature treatment than at low temperature for length and survival due to a higher variance among populations under the stressful warmer treatment. Interestingly, heritability was lower for survival under high temperature in relation to a lower additive genetic variance under that treatment. Overall, these results reveal an adaptive divergence in thermal plasticity in embryonic life stages of Atlantic salmon suggesting that salmon populations may differentially respond to temperature variations induced by climate change. These results also suggest that changes in temperature may alter not only the adaptive potential of natural populations but also the selection regimes among them. Article in Journal/Newspaper Atlantic salmon University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Institute of Evolutionary Biology and Environmental Studies 570 Life sciences biology 590 Animals (Zoology) |
spellingShingle |
Institute of Evolutionary Biology and Environmental Studies 570 Life sciences biology 590 Animals (Zoology) Côte, J Roussel, J-M Le Cam, S Guillaume, F Evanno, G Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations |
topic_facet |
Institute of Evolutionary Biology and Environmental Studies 570 Life sciences biology 590 Animals (Zoology) |
description |
In the context of global changes, the long-term viability of populations of endangered ectotherms may depend on their adaptive potential and ability to cope with temperature variations. We measured responses of Atlantic salmon embryos from four populations to temperature variations and used a QST–FST approach to study the adaptive divergence among these populations. Embryos were reared under two experimental conditions: a low temperature regime at 4 °C until eyed-stage and 10 °C until the end of embryonic development and a high temperature regime with a constant temperature of 10 °C throughout embryonic development. Significant variations among populations and population × temperature interactions were observed for embryo survival, incubation time and length. QST was higher than FST in all but one comparison suggesting an important effect of divergent selection. QST was also higher under the high-temperature treatment than at low temperature for length and survival due to a higher variance among populations under the stressful warmer treatment. Interestingly, heritability was lower for survival under high temperature in relation to a lower additive genetic variance under that treatment. Overall, these results reveal an adaptive divergence in thermal plasticity in embryonic life stages of Atlantic salmon suggesting that salmon populations may differentially respond to temperature variations induced by climate change. These results also suggest that changes in temperature may alter not only the adaptive potential of natural populations but also the selection regimes among them. |
format |
Article in Journal/Newspaper |
author |
Côte, J Roussel, J-M Le Cam, S Guillaume, F Evanno, G |
author_facet |
Côte, J Roussel, J-M Le Cam, S Guillaume, F Evanno, G |
author_sort |
Côte, J |
title |
Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations |
title_short |
Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations |
title_full |
Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations |
title_fullStr |
Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations |
title_full_unstemmed |
Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations |
title_sort |
adaptive divergence in embryonic thermal plasticity among atlantic salmon populations |
publisher |
Wiley-Blackwell Publishing, Inc. |
publishDate |
2016 |
url |
https://www.zora.uzh.ch/id/eprint/124770/ https://www.zora.uzh.ch/id/eprint/124770/1/Adaptive%20divergence%20in%20embryonic%20thermal%20plasticit.pdf https://doi.org/10.5167/uzh-124770 https://doi.org/10.1111/jeb.12896 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Côte, J; Roussel, J-M; Le Cam, S; Guillaume, F; Evanno, G (2016). Adaptive divergence in embryonic thermal plasticity among Atlantic salmon populations. Journal of Evolutionary Biology, 29(8):1593-1601. |
op_relation |
https://www.zora.uzh.ch/id/eprint/124770/1/Adaptive%20divergence%20in%20embryonic%20thermal%20plasticit.pdf doi:10.5167/uzh-124770 doi:10.1111/jeb.12896 urn:issn:1010-061X |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.5167/uzh-12477010.1111/jeb.12896 |
_version_ |
1811636561380376576 |