Data from: Can we rely on selected genetic markers for population identification? evidence from coastal Atlantic cod
The use of genetic markers under putative selection in population studies carries the potential for erroneous identification of populations and misassignment of individuals to population of origin. Selected markers are nevertheless attractive, especially in marine organisms that are characterized by...
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ftdryad:oai:v1.datadryad.org:10255/dryad.194354 2023-05-15T15:27:20+02:00 Data from: Can we rely on selected genetic markers for population identification? evidence from coastal Atlantic cod Jorde, Per Erik Synnes, Ann-Elin Espeland, Sigurd Heiberg Sodeland, Marte Knutsen, Halvor Skagerrak North Sea 2015 2019-01-04T22:20:30Z http://hdl.handle.net/10255/dryad.194354 https://doi.org/10.5061/dryad.k718h66 unknown doi:10.5061/dryad.k718h66/1 doi:10.1002/ece3.4648 doi:10.5061/dryad.k718h66 Jorde PE, Synnes A, Espeland SH, Sodeland M, Knutsen H (2018) Can we rely on selected genetic markers for population identification? Evidence from coastal Atlantic cod. Ecology and Evolution 8(24): 12547-12558. http://hdl.handle.net/10255/dryad.194354 population genetics natural selection statistical assignment population-of-origin marine fish Article 2019 ftdryad https://doi.org/10.5061/dryad.k718h66 https://doi.org/10.5061/dryad.k718h66/1 https://doi.org/10.1002/ece3.4648 2020-01-01T16:16:57Z The use of genetic markers under putative selection in population studies carries the potential for erroneous identification of populations and misassignment of individuals to population of origin. Selected markers are nevertheless attractive, especially in marine organisms that are characterized by weak population structure at neutral loci. Highly fecund species may tolerate the cost of strong selective mortality during early life stages, potentially leading to a shift in offspring genotypes away from the parental proportions. In Atlantic cod, recent genetic studies have uncovered different genotype clusters apparently representing phenotypically cryptic populations that coexist in coastal waters. Here, we tested if a high‐graded SNP panel specifically designed to classify individual cod to population of origin may be unreliable because of natural selection acting on the SNPs or their linked background. Temporal samples of cod were collected from two fjords, starting at the earliest life stage (pelagic eggs) and carried on until late autumn (bottom‐settled juveniles), covering the period during summer of high natural mortality. Despite the potential for selective mortality during the study period, we found no evidence for selection, as both cod types occurred throughout the season, already in the earliest egg samples, and there was no evidence for a shift during the season in the proportions of one or the other type. We conclude that high‐graded marker panels under putative natural selection represent a valid and useful tool for identifying biological population structure in this highly fecund species and presumably in others. Article in Journal/Newspaper atlantic cod Dryad Digital Repository (Duke University) |
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Open Polar |
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Dryad Digital Repository (Duke University) |
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ftdryad |
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unknown |
topic |
population genetics natural selection statistical assignment population-of-origin marine fish |
spellingShingle |
population genetics natural selection statistical assignment population-of-origin marine fish Jorde, Per Erik Synnes, Ann-Elin Espeland, Sigurd Heiberg Sodeland, Marte Knutsen, Halvor Data from: Can we rely on selected genetic markers for population identification? evidence from coastal Atlantic cod |
topic_facet |
population genetics natural selection statistical assignment population-of-origin marine fish |
description |
The use of genetic markers under putative selection in population studies carries the potential for erroneous identification of populations and misassignment of individuals to population of origin. Selected markers are nevertheless attractive, especially in marine organisms that are characterized by weak population structure at neutral loci. Highly fecund species may tolerate the cost of strong selective mortality during early life stages, potentially leading to a shift in offspring genotypes away from the parental proportions. In Atlantic cod, recent genetic studies have uncovered different genotype clusters apparently representing phenotypically cryptic populations that coexist in coastal waters. Here, we tested if a high‐graded SNP panel specifically designed to classify individual cod to population of origin may be unreliable because of natural selection acting on the SNPs or their linked background. Temporal samples of cod were collected from two fjords, starting at the earliest life stage (pelagic eggs) and carried on until late autumn (bottom‐settled juveniles), covering the period during summer of high natural mortality. Despite the potential for selective mortality during the study period, we found no evidence for selection, as both cod types occurred throughout the season, already in the earliest egg samples, and there was no evidence for a shift during the season in the proportions of one or the other type. We conclude that high‐graded marker panels under putative natural selection represent a valid and useful tool for identifying biological population structure in this highly fecund species and presumably in others. |
format |
Article in Journal/Newspaper |
author |
Jorde, Per Erik Synnes, Ann-Elin Espeland, Sigurd Heiberg Sodeland, Marte Knutsen, Halvor |
author_facet |
Jorde, Per Erik Synnes, Ann-Elin Espeland, Sigurd Heiberg Sodeland, Marte Knutsen, Halvor |
author_sort |
Jorde, Per Erik |
title |
Data from: Can we rely on selected genetic markers for population identification? evidence from coastal Atlantic cod |
title_short |
Data from: Can we rely on selected genetic markers for population identification? evidence from coastal Atlantic cod |
title_full |
Data from: Can we rely on selected genetic markers for population identification? evidence from coastal Atlantic cod |
title_fullStr |
Data from: Can we rely on selected genetic markers for population identification? evidence from coastal Atlantic cod |
title_full_unstemmed |
Data from: Can we rely on selected genetic markers for population identification? evidence from coastal Atlantic cod |
title_sort |
data from: can we rely on selected genetic markers for population identification? evidence from coastal atlantic cod |
publishDate |
2019 |
url |
http://hdl.handle.net/10255/dryad.194354 https://doi.org/10.5061/dryad.k718h66 |
op_coverage |
Skagerrak North Sea 2015 |
genre |
atlantic cod |
genre_facet |
atlantic cod |
op_relation |
doi:10.5061/dryad.k718h66/1 doi:10.1002/ece3.4648 doi:10.5061/dryad.k718h66 Jorde PE, Synnes A, Espeland SH, Sodeland M, Knutsen H (2018) Can we rely on selected genetic markers for population identification? Evidence from coastal Atlantic cod. Ecology and Evolution 8(24): 12547-12558. http://hdl.handle.net/10255/dryad.194354 |
op_doi |
https://doi.org/10.5061/dryad.k718h66 https://doi.org/10.5061/dryad.k718h66/1 https://doi.org/10.1002/ece3.4648 |
_version_ |
1766357783816437760 |