Present-Day Genetic Structure of Atlantic Salmon (Salmo salar) in Icelandic Rivers and Ice-Cap Retreat Models
Due to an improved understanding of past climatological conditions, it has now become possible to study the potential concordance between former climatological models and present-day genetic structure. Genetic variability was assessed in 26 samples from different rivers of Atlantic salmon in Iceland...
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ftpubmed:oai:pubmedcentral.nih.gov:3911922 2023-05-15T15:31:33+02:00 Present-Day Genetic Structure of Atlantic Salmon (Salmo salar) in Icelandic Rivers and Ice-Cap Retreat Models Olafsson, Kristinn Pampoulie, Christophe Hjorleifsdottir, Sigridur Gudjonsson, Sigurdur Hreggvidsson, Gudmundur O. 2014-02-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3911922 http://www.ncbi.nlm.nih.gov/pubmed/24498283 https://doi.org/10.1371/journal.pone.0086809 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3911922 http://www.ncbi.nlm.nih.gov/pubmed/24498283 http://dx.doi.org/10.1371/journal.pone.0086809 http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2014 ftpubmed https://doi.org/10.1371/journal.pone.0086809 2014-02-09T01:45:08Z Due to an improved understanding of past climatological conditions, it has now become possible to study the potential concordance between former climatological models and present-day genetic structure. Genetic variability was assessed in 26 samples from different rivers of Atlantic salmon in Iceland (total of 2,352 individuals), using 15 microsatellite loci. F-statistics revealed significant differences between the majority of the populations that were sampled. Bayesian cluster analyses using both prior information and no prior information on sampling location revealed the presence of two distinguishable genetic pools - namely, the Northern (Group 1) and Southern (Group 2) regions of Iceland. Furthermore, the random permutation of different allele sizes among allelic states revealed a significant mutational component to the genetic differentiation at four microsatellite loci (SsaD144, Ssa171, SSsp2201 and SsaF3), and supported the proposition of a historical origin behind the observed variation. The estimated time of divergence, using two different ABC methods, suggested that the observed genetic pattern originated from between the Last Glacial Maximum to the Younger Dryas, which serves as additional evidence of the relative immaturity of Icelandic fish populations, on account of the re-colonisation of this young environment following the Last Glacial Maximum. Additional analyses suggested the presence of several genetic entities which were likely to originate from the original groups detected. Text Atlantic salmon Ice cap Iceland Salmo salar PubMed Central (PMC) PLoS ONE 9 2 e86809 |
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Research Article Olafsson, Kristinn Pampoulie, Christophe Hjorleifsdottir, Sigridur Gudjonsson, Sigurdur Hreggvidsson, Gudmundur O. Present-Day Genetic Structure of Atlantic Salmon (Salmo salar) in Icelandic Rivers and Ice-Cap Retreat Models |
topic_facet |
Research Article |
description |
Due to an improved understanding of past climatological conditions, it has now become possible to study the potential concordance between former climatological models and present-day genetic structure. Genetic variability was assessed in 26 samples from different rivers of Atlantic salmon in Iceland (total of 2,352 individuals), using 15 microsatellite loci. F-statistics revealed significant differences between the majority of the populations that were sampled. Bayesian cluster analyses using both prior information and no prior information on sampling location revealed the presence of two distinguishable genetic pools - namely, the Northern (Group 1) and Southern (Group 2) regions of Iceland. Furthermore, the random permutation of different allele sizes among allelic states revealed a significant mutational component to the genetic differentiation at four microsatellite loci (SsaD144, Ssa171, SSsp2201 and SsaF3), and supported the proposition of a historical origin behind the observed variation. The estimated time of divergence, using two different ABC methods, suggested that the observed genetic pattern originated from between the Last Glacial Maximum to the Younger Dryas, which serves as additional evidence of the relative immaturity of Icelandic fish populations, on account of the re-colonisation of this young environment following the Last Glacial Maximum. Additional analyses suggested the presence of several genetic entities which were likely to originate from the original groups detected. |
format |
Text |
author |
Olafsson, Kristinn Pampoulie, Christophe Hjorleifsdottir, Sigridur Gudjonsson, Sigurdur Hreggvidsson, Gudmundur O. |
author_facet |
Olafsson, Kristinn Pampoulie, Christophe Hjorleifsdottir, Sigridur Gudjonsson, Sigurdur Hreggvidsson, Gudmundur O. |
author_sort |
Olafsson, Kristinn |
title |
Present-Day Genetic Structure of Atlantic Salmon (Salmo salar) in Icelandic Rivers and Ice-Cap Retreat Models |
title_short |
Present-Day Genetic Structure of Atlantic Salmon (Salmo salar) in Icelandic Rivers and Ice-Cap Retreat Models |
title_full |
Present-Day Genetic Structure of Atlantic Salmon (Salmo salar) in Icelandic Rivers and Ice-Cap Retreat Models |
title_fullStr |
Present-Day Genetic Structure of Atlantic Salmon (Salmo salar) in Icelandic Rivers and Ice-Cap Retreat Models |
title_full_unstemmed |
Present-Day Genetic Structure of Atlantic Salmon (Salmo salar) in Icelandic Rivers and Ice-Cap Retreat Models |
title_sort |
present-day genetic structure of atlantic salmon (salmo salar) in icelandic rivers and ice-cap retreat models |
publisher |
Public Library of Science |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3911922 http://www.ncbi.nlm.nih.gov/pubmed/24498283 https://doi.org/10.1371/journal.pone.0086809 |
genre |
Atlantic salmon Ice cap Iceland Salmo salar |
genre_facet |
Atlantic salmon Ice cap Iceland Salmo salar |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3911922 http://www.ncbi.nlm.nih.gov/pubmed/24498283 http://dx.doi.org/10.1371/journal.pone.0086809 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0086809 |
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PLoS ONE |
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9 |
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2 |
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e86809 |
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