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Detailed insights into pan‐European population structure and inbreeding in wild and hatchery Pacific oysters (Crassostrea gigas) revealed by genome‐wide SNP data

Cultivated bivalves are important not only because of their economic value, but also due to their impacts on natural ecosystems. The Pacific oyster (Crassostrea gigas) is the world's most heavily cultivated shellfish species and has been introduced to all continents except Antarctica for aquacu...

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Autores principales: Vendrami, David L. J., Houston, Ross D., Gharbi, Karim, Telesca, Luca, Gutierrez, Alejandro P., Gurney‐Smith, Helen, Hasegawa, Natsuki, Boudry, Pierre, Hoffman, Joseph I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6383735/
https://www.ncbi.nlm.nih.gov/pubmed/30847007
http://dx.doi.org/10.1111/eva.12736
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author Vendrami, David L. J.
Houston, Ross D.
Gharbi, Karim
Telesca, Luca
Gutierrez, Alejandro P.
Gurney‐Smith, Helen
Hasegawa, Natsuki
Boudry, Pierre
Hoffman, Joseph I.
author_facet Vendrami, David L. J.
Houston, Ross D.
Gharbi, Karim
Telesca, Luca
Gutierrez, Alejandro P.
Gurney‐Smith, Helen
Hasegawa, Natsuki
Boudry, Pierre
Hoffman, Joseph I.
author_sort Vendrami, David L. J.
collection PubMed
description Cultivated bivalves are important not only because of their economic value, but also due to their impacts on natural ecosystems. The Pacific oyster (Crassostrea gigas) is the world's most heavily cultivated shellfish species and has been introduced to all continents except Antarctica for aquaculture. We therefore used a medium‐density single nucleotide polymorphism (SNP) array to investigate the genetic structure of this species in Europe, where it was introduced during the 1960s and has since become a prolific invader of coastal ecosystems across the continent. We analyzed 21,499 polymorphic SNPs in 232 individuals from 23 localities spanning a latitudinal cline from Portugal to Norway and including the source populations of Japan and Canada. We confirmed the results of previous studies by finding clear support for a southern and a northern group, with the former being indistinguishable from the source populations indicating the absence of a pronounced founder effect. We furthermore conducted a large‐scale comparison of oysters sampled from the wild and from hatcheries to reveal substantial genetic differences including significantly higher levels of inbreeding in some but not all of the sampled hatchery cohorts. These findings were confirmed by a smaller but representative SNP dataset generated using restriction site‐associated DNA sequencing. We therefore conclude that genomic approaches can generate increasingly detailed insights into the genetics of wild and hatchery produced Pacific oysters.
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spelling pubmed-63837352019-03-07 Detailed insights into pan‐European population structure and inbreeding in wild and hatchery Pacific oysters (Crassostrea gigas) revealed by genome‐wide SNP data Vendrami, David L. J. Houston, Ross D. Gharbi, Karim Telesca, Luca Gutierrez, Alejandro P. Gurney‐Smith, Helen Hasegawa, Natsuki Boudry, Pierre Hoffman, Joseph I. Evol Appl Original Articles Cultivated bivalves are important not only because of their economic value, but also due to their impacts on natural ecosystems. The Pacific oyster (Crassostrea gigas) is the world's most heavily cultivated shellfish species and has been introduced to all continents except Antarctica for aquaculture. We therefore used a medium‐density single nucleotide polymorphism (SNP) array to investigate the genetic structure of this species in Europe, where it was introduced during the 1960s and has since become a prolific invader of coastal ecosystems across the continent. We analyzed 21,499 polymorphic SNPs in 232 individuals from 23 localities spanning a latitudinal cline from Portugal to Norway and including the source populations of Japan and Canada. We confirmed the results of previous studies by finding clear support for a southern and a northern group, with the former being indistinguishable from the source populations indicating the absence of a pronounced founder effect. We furthermore conducted a large‐scale comparison of oysters sampled from the wild and from hatcheries to reveal substantial genetic differences including significantly higher levels of inbreeding in some but not all of the sampled hatchery cohorts. These findings were confirmed by a smaller but representative SNP dataset generated using restriction site‐associated DNA sequencing. We therefore conclude that genomic approaches can generate increasingly detailed insights into the genetics of wild and hatchery produced Pacific oysters. John Wiley and Sons Inc. 2018-12-31 /pmc/articles/PMC6383735/ /pubmed/30847007 http://dx.doi.org/10.1111/eva.12736 Text en © 2018 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
Vendrami, David L. J.
Houston, Ross D.
Gharbi, Karim
Telesca, Luca
Gutierrez, Alejandro P.
Gurney‐Smith, Helen
Hasegawa, Natsuki
Boudry, Pierre
Hoffman, Joseph I.
Detailed insights into pan‐European population structure and inbreeding in wild and hatchery Pacific oysters (Crassostrea gigas) revealed by genome‐wide SNP data
title Detailed insights into pan‐European population structure and inbreeding in wild and hatchery Pacific oysters (Crassostrea gigas) revealed by genome‐wide SNP data
title_full Detailed insights into pan‐European population structure and inbreeding in wild and hatchery Pacific oysters (Crassostrea gigas) revealed by genome‐wide SNP data
title_fullStr Detailed insights into pan‐European population structure and inbreeding in wild and hatchery Pacific oysters (Crassostrea gigas) revealed by genome‐wide SNP data
title_full_unstemmed Detailed insights into pan‐European population structure and inbreeding in wild and hatchery Pacific oysters (Crassostrea gigas) revealed by genome‐wide SNP data
title_short Detailed insights into pan‐European population structure and inbreeding in wild and hatchery Pacific oysters (Crassostrea gigas) revealed by genome‐wide SNP data
title_sort detailed insights into pan‐european population structure and inbreeding in wild and hatchery pacific oysters (crassostrea gigas) revealed by genome‐wide snp data
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6383735/
https://www.ncbi.nlm.nih.gov/pubmed/30847007
http://dx.doi.org/10.1111/eva.12736
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