A standardized method for quantifying unidirectional genetic introgression

Abstract Genetic introgression of domesticated to wild conspecifics is of great concern to the genetic integrity and viability of the wild populations. Therefore, we need tools that can be used for monitoring unidirectional gene flow from domesticated to wild populations. A challenge to quantitation...

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Published in:Ecology and Evolution
Main Authors: Karlsson, Sten, Diserud, Ola H., Moen, Thomas, Hindar, Kjetil
Other Authors: Reseacrh council of Norway
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2014
Subjects:
Online Access:http://dx.doi.org/10.1002/ece3.1169
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spelling crwiley:10.1002/ece3.1169 2024-06-23T07:51:25+00:00 A standardized method for quantifying unidirectional genetic introgression Karlsson, Sten Diserud, Ola H. Moen, Thomas Hindar, Kjetil Reseacrh council of Norway 2014 http://dx.doi.org/10.1002/ece3.1169 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.1169 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.1169 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.1169 en eng Wiley http://creativecommons.org/licenses/by/3.0/ Ecology and Evolution volume 4, issue 16, page 3256-3263 ISSN 2045-7758 2045-7758 journal-article 2014 crwiley https://doi.org/10.1002/ece3.1169 2024-05-31T08:10:42Z Abstract Genetic introgression of domesticated to wild conspecifics is of great concern to the genetic integrity and viability of the wild populations. Therefore, we need tools that can be used for monitoring unidirectional gene flow from domesticated to wild populations. A challenge to quantitation of unidirectional gene flow is that both the donor and the recipient population may be genetically substructured and that the subpopulations are subjected to genetic drift and may exchange migrants between one another. We develop a standardized method for quantifying and monitoring domesticated to wild gene flow and demonstrate its usefulness to farm and wild Atlantic salmon as a model species. The challenge of having several wild and farm populations was circumvented by in silico generating one analytical center point for farm and wild salmon, respectively. Distributions for the probability that an individual is wild were generated from individual‐based analyses of observed wild and farm genotypes using STRUCTURE . We show that estimates of proportions of the genome being of domesticated origin in a particular wild population can be obtained without having a historical reference sample for the same population. The main advantages of the method presented are the standardized way in which genetic processes within and between populations are taken into account, and the individual‐based analyses giving estimates for each individual independent of other individuals. The method makes use of established software, and as long as genetic markers showing generic genetic differences between domesticated and wild populations are available, it can be applied to all species with unidirectional gene flow. Results from our method are easy to interpret and understand, and will serve as a powerful tool for management, especially because there is no need for a specific historical wild reference sample. Article in Journal/Newspaper Atlantic salmon Wiley Online Library Center Point ENVELOPE(173.160,173.160,52.926,52.926) Ecology and Evolution 4 16 3256 3263
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language English
description Abstract Genetic introgression of domesticated to wild conspecifics is of great concern to the genetic integrity and viability of the wild populations. Therefore, we need tools that can be used for monitoring unidirectional gene flow from domesticated to wild populations. A challenge to quantitation of unidirectional gene flow is that both the donor and the recipient population may be genetically substructured and that the subpopulations are subjected to genetic drift and may exchange migrants between one another. We develop a standardized method for quantifying and monitoring domesticated to wild gene flow and demonstrate its usefulness to farm and wild Atlantic salmon as a model species. The challenge of having several wild and farm populations was circumvented by in silico generating one analytical center point for farm and wild salmon, respectively. Distributions for the probability that an individual is wild were generated from individual‐based analyses of observed wild and farm genotypes using STRUCTURE . We show that estimates of proportions of the genome being of domesticated origin in a particular wild population can be obtained without having a historical reference sample for the same population. The main advantages of the method presented are the standardized way in which genetic processes within and between populations are taken into account, and the individual‐based analyses giving estimates for each individual independent of other individuals. The method makes use of established software, and as long as genetic markers showing generic genetic differences between domesticated and wild populations are available, it can be applied to all species with unidirectional gene flow. Results from our method are easy to interpret and understand, and will serve as a powerful tool for management, especially because there is no need for a specific historical wild reference sample.
author2 Reseacrh council of Norway
format Article in Journal/Newspaper
author Karlsson, Sten
Diserud, Ola H.
Moen, Thomas
Hindar, Kjetil
spellingShingle Karlsson, Sten
Diserud, Ola H.
Moen, Thomas
Hindar, Kjetil
A standardized method for quantifying unidirectional genetic introgression
author_facet Karlsson, Sten
Diserud, Ola H.
Moen, Thomas
Hindar, Kjetil
author_sort Karlsson, Sten
title A standardized method for quantifying unidirectional genetic introgression
title_short A standardized method for quantifying unidirectional genetic introgression
title_full A standardized method for quantifying unidirectional genetic introgression
title_fullStr A standardized method for quantifying unidirectional genetic introgression
title_full_unstemmed A standardized method for quantifying unidirectional genetic introgression
title_sort standardized method for quantifying unidirectional genetic introgression
publisher Wiley
publishDate 2014
url http://dx.doi.org/10.1002/ece3.1169
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.1169
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.1169
https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.1169
long_lat ENVELOPE(173.160,173.160,52.926,52.926)
geographic Center Point
geographic_facet Center Point
genre Atlantic salmon
genre_facet Atlantic salmon
op_source Ecology and Evolution
volume 4, issue 16, page 3256-3263
ISSN 2045-7758 2045-7758
op_rights http://creativecommons.org/licenses/by/3.0/
op_doi https://doi.org/10.1002/ece3.1169
container_title Ecology and Evolution
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