Genetic population structure and variation at phenology-related loci in anadromous Arctic char ( Salvelinus alpinus )
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 sho...
Published in: | Ecology of Freshwater Fish |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/68d0a444-5bd5-42fb-a7a3-e11b12801699 https://doi.org/10.1111/eff.12504 https://backend.orbit.dtu.dk/ws/files/254829079/Genetic_population_structure_and_variati_1_.pdf |
id |
ftdtupubl:oai:pure.atira.dk:publications/68d0a444-5bd5-42fb-a7a3-e11b12801699 |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/68d0a444-5bd5-42fb-a7a3-e11b12801699 2024-06-09T07:42:33+00:00 Genetic population structure and variation at phenology-related loci in anadromous Arctic char ( Salvelinus alpinus ) Madsen, Rikke P.A. Jacobsen, Magnus W. O'Malley, Kathleen G. Nygaard, Rasmus Præbel, Kim Jónsson, Bjarni Pujolar, Jose M. Fraser, Dylan J. Bernatchez, Louis Hansen, Michael Møller 2020 application/pdf https://orbit.dtu.dk/en/publications/68d0a444-5bd5-42fb-a7a3-e11b12801699 https://doi.org/10.1111/eff.12504 https://backend.orbit.dtu.dk/ws/files/254829079/Genetic_population_structure_and_variati_1_.pdf eng eng https://orbit.dtu.dk/en/publications/68d0a444-5bd5-42fb-a7a3-e11b12801699 info:eu-repo/semantics/closedAccess Madsen , R P A , Jacobsen , M W , O'Malley , K G , Nygaard , R , Præbel , K , Jónsson , B , Pujolar , J M , Fraser , D J , Bernatchez , L & Hansen , M M 2020 , ' Genetic population structure and variation at phenology-related loci in anadromous Arctic char ( Salvelinus alpinus ) ' , Ecology of Freshwater Fish , vol. 29 , no. 1 , 170-183 . https://doi.org/10.1111/eff.12504 Arctic char Climate change Clock gene Phenology Sea surface temperature Spatial autocorrelation /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action article 2020 ftdtupubl https://doi.org/10.1111/eff.12504 2024-05-15T00:10:25Z 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 Technical University of Denmark: DTU Orbit Arctic Greenland Ecology of Freshwater Fish 29 1 170 183 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Arctic char Climate change Clock gene Phenology Sea surface temperature Spatial autocorrelation /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
spellingShingle |
Arctic char Climate change Clock gene Phenology Sea surface temperature Spatial autocorrelation /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action Madsen, Rikke P.A. Jacobsen, Magnus W. O'Malley, Kathleen G. Nygaard, Rasmus Præbel, Kim Jónsson, Bjarni Pujolar, Jose M. Fraser, Dylan J. Bernatchez, Louis Hansen, Michael Møller Genetic population structure and variation at phenology-related loci in anadromous Arctic char ( Salvelinus alpinus ) |
topic_facet |
Arctic char Climate change Clock gene Phenology Sea surface temperature Spatial autocorrelation /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
description |
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 P.A. Jacobsen, Magnus W. O'Malley, Kathleen G. Nygaard, Rasmus Præbel, Kim Jónsson, Bjarni Pujolar, Jose M. Fraser, Dylan J. Bernatchez, Louis Hansen, Michael Møller |
author_facet |
Madsen, Rikke P.A. Jacobsen, Magnus W. O'Malley, Kathleen G. Nygaard, Rasmus Præbel, Kim Jónsson, Bjarni Pujolar, Jose M. Fraser, Dylan J. Bernatchez, Louis Hansen, Michael Møller |
author_sort |
Madsen, Rikke P.A. |
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 ) |
publishDate |
2020 |
url |
https://orbit.dtu.dk/en/publications/68d0a444-5bd5-42fb-a7a3-e11b12801699 https://doi.org/10.1111/eff.12504 https://backend.orbit.dtu.dk/ws/files/254829079/Genetic_population_structure_and_variati_1_.pdf |
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_source |
Madsen , R P A , Jacobsen , M W , O'Malley , K G , Nygaard , R , Præbel , K , Jónsson , B , Pujolar , J M , Fraser , D J , Bernatchez , L & Hansen , M M 2020 , ' Genetic population structure and variation at phenology-related loci in anadromous Arctic char ( Salvelinus alpinus ) ' , Ecology of Freshwater Fish , vol. 29 , no. 1 , 170-183 . https://doi.org/10.1111/eff.12504 |
op_relation |
https://orbit.dtu.dk/en/publications/68d0a444-5bd5-42fb-a7a3-e11b12801699 |
op_rights |
info:eu-repo/semantics/closedAccess |
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 |
_version_ |
1801371350624894976 |