Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus)
This is the peer reviewed version of the following article: Madsen, R. P. A., Jacobsen, M. W., O´Malley, K. G., Nygaard, R., Præbel, K., Jónsson, B., .Hansen, M. M. (2019). Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus). Ecology of...
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Online Access: | https://hdl.handle.net/10037/17779 https://doi.org/10.1111/eff.12504 |
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ftunivtroemsoe:oai:munin.uit.no:10037/17779 2023-05-15T14:26:46+02:00 Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus) Madsen, Rikke Jacobsen, Magnus W O´Malley, Kathleen G Nygaard, Rasmus Præbel, Kim Jonsson, Bjarni Pujolar, Jose M Fraser, Dylan J Bernatchez, Louis Hansen, Michael M 2019-10-03 https://hdl.handle.net/10037/17779 https://doi.org/10.1111/eff.12504 eng eng Wiley Ecology of Freshwater Fish Madsen R, Jacobsen MW, O´Malley, Nygaard R, Præbel K, Jonsson B, Pujolar JM, Fraser DJ, Bernatchez L, Hansen MM. Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus). Ecology of Freshwater Fish. 2019;29(1):170-183 FRIDAID 1763602 doi:10.1111/eff.12504 0906-6691 1600-0633 https://hdl.handle.net/10037/17779 openAccess © 2019 John Wiley & Sons A/S VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2019 ftunivtroemsoe https://doi.org/10.1111/eff.12504 2021-06-25T17:57:06Z This is the peer reviewed version of the following article: Madsen, R. P. A., Jacobsen, M. W., O´Malley, K. G., Nygaard, R., Præbel, K., Jónsson, B., .Hansen, M. M. (2019). Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus). Ecology of Freshwater Fish, 29 (1), 170-183., which has been published in final form at https://doi.org/10.1111/eff.12504 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. The Arctic will be especially affected by climate change, resulting in altered seasonal timing. Anadromous Arctic char ( Salvelinus alpinus ) is strongly influenced by sea surface temperature (SST) delimiting time periods available for foraging in the sea. Recent studies of salmonid species have shown variation at phenology‐related loci associated with timing of migration and spawning. We contrasted genetic population structure at 53 SNPs versus four phenology‐related loci among 15 anadromous Arctic char populations from Western Greenland and three outgroup populations. Among anadromous populations, the time period available for foraging at sea (>2°C) ranges from a few weeks to several months, motivating two research questions: (a) Is population structure compatible with possibilities for evolutionary rescue of anadromous populations during climate change? (b) Does selection associated with latitude or SST regimes act on phenology‐related loci? In Western Greenland, strong isolation by distance at SNPs was observed and spatial autocorrelation analysis showed genetic patch size up to 450 km, documenting contingency and gene flow among populations. Outlier tests provided no evidence for selection at phenology‐related loci. However, in Western Greenland, mean allele length at OtsClock1b was positively associated with the time of year when SST first exceeded 2°C and negatively associated with duration of the period where SST exceeded 2°C. This is consistent with local adaptation for making full use of the time period available for foraging in the sea. Current adaptation may become maladaptive under climate change, but long‐distance connectivity of anadromous populations could redistribute adaptive variation across populations and lead to evolutionary rescue Article in Journal/Newspaper Arctic Arctic Climate change Greenland Salvelinus alpinus University of Tromsø: Munin Open Research Archive Arctic Greenland Ecology of Freshwater Fish 29 1 170 183 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
spellingShingle |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Madsen, Rikke Jacobsen, Magnus W O´Malley, Kathleen G Nygaard, Rasmus Præbel, Kim Jonsson, Bjarni Pujolar, Jose M Fraser, Dylan J Bernatchez, Louis Hansen, Michael M Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus) |
topic_facet |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
description |
This is the peer reviewed version of the following article: Madsen, R. P. A., Jacobsen, M. W., O´Malley, K. G., Nygaard, R., Præbel, K., Jónsson, B., .Hansen, M. M. (2019). Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus). Ecology of Freshwater Fish, 29 (1), 170-183., which has been published in final form at https://doi.org/10.1111/eff.12504 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. The Arctic will be especially affected by climate change, resulting in altered seasonal timing. Anadromous Arctic char ( Salvelinus alpinus ) is strongly influenced by sea surface temperature (SST) delimiting time periods available for foraging in the sea. Recent studies of salmonid species have shown variation at phenology‐related loci associated with timing of migration and spawning. We contrasted genetic population structure at 53 SNPs versus four phenology‐related loci among 15 anadromous Arctic char populations from Western Greenland and three outgroup populations. Among anadromous populations, the time period available for foraging at sea (>2°C) ranges from a few weeks to several months, motivating two research questions: (a) Is population structure compatible with possibilities for evolutionary rescue of anadromous populations during climate change? (b) Does selection associated with latitude or SST regimes act on phenology‐related loci? In Western Greenland, strong isolation by distance at SNPs was observed and spatial autocorrelation analysis showed genetic patch size up to 450 km, documenting contingency and gene flow among populations. Outlier tests provided no evidence for selection at phenology‐related loci. However, in Western Greenland, mean allele length at OtsClock1b was positively associated with the time of year when SST first exceeded 2°C and negatively associated with duration of the period where SST exceeded 2°C. This is consistent with local adaptation for making full use of the time period available for foraging in the sea. Current adaptation may become maladaptive under climate change, but long‐distance connectivity of anadromous populations could redistribute adaptive variation across populations and lead to evolutionary rescue |
format |
Article in Journal/Newspaper |
author |
Madsen, Rikke Jacobsen, Magnus W O´Malley, Kathleen G Nygaard, Rasmus Præbel, Kim Jonsson, Bjarni Pujolar, Jose M Fraser, Dylan J Bernatchez, Louis Hansen, Michael M |
author_facet |
Madsen, Rikke Jacobsen, Magnus W O´Malley, Kathleen G Nygaard, Rasmus Præbel, Kim Jonsson, Bjarni Pujolar, Jose M Fraser, Dylan J Bernatchez, Louis Hansen, Michael M |
author_sort |
Madsen, Rikke |
title |
Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus) |
title_short |
Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus) |
title_full |
Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus) |
title_fullStr |
Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus) |
title_full_unstemmed |
Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus) |
title_sort |
genetic population structure and variation at phenology‐related loci in anadromous arctic char (salvelinus alpinus) |
publisher |
Wiley |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/17779 https://doi.org/10.1111/eff.12504 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Climate change Greenland Salvelinus alpinus |
genre_facet |
Arctic Arctic Climate change Greenland Salvelinus alpinus |
op_relation |
Ecology of Freshwater Fish Madsen R, Jacobsen MW, O´Malley, Nygaard R, Præbel K, Jonsson B, Pujolar JM, Fraser DJ, Bernatchez L, Hansen MM. Genetic population structure and variation at phenology‐related loci in anadromous Arctic char (Salvelinus alpinus). Ecology of Freshwater Fish. 2019;29(1):170-183 FRIDAID 1763602 doi:10.1111/eff.12504 0906-6691 1600-0633 https://hdl.handle.net/10037/17779 |
op_rights |
openAccess © 2019 John Wiley & Sons A/S |
op_doi |
https://doi.org/10.1111/eff.12504 |
container_title |
Ecology of Freshwater Fish |
container_volume |
29 |
container_issue |
1 |
container_start_page |
170 |
op_container_end_page |
183 |
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1766300192029540352 |