Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas
Crassostrea gigas originated from the Pacific coast of Asia, but was introduced into several European countries in the early 1970s. Natural populations have now spread across the length of the western seaboard of Europe. To elucidate the demographic and selective processes at play during this rapid...
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ftpubmed:oai:pubmedcentral.nih.gov:3804239 2023-05-15T15:58:01+02:00 Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas Rohfritsch, Audrey Bierne, Nicolas Boudry, Pierre Heurtebise, Serge Cornette, Florence Lapègue, Sylvie 2013-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3804239 http://www.ncbi.nlm.nih.gov/pubmed/24187588 https://doi.org/10.1111/eva.12086 en eng Blackwell Publishing Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3804239 http://www.ncbi.nlm.nih.gov/pubmed/24187588 http://dx.doi.org/10.1111/eva.12086 Copyright © 2013 Wiley Periodicals, Inc. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. CC-BY Original Articles Text 2013 ftpubmed https://doi.org/10.1111/eva.12086 2013-11-10T01:29:07Z Crassostrea gigas originated from the Pacific coast of Asia, but was introduced into several European countries in the early 1970s. Natural populations have now spread across the length of the western seaboard of Europe. To elucidate the demographic and selective processes at play during this rapid expansion, genome-scan analysis was performed on different populations. High diversities and low differentiation were observed overall, but significant genetic differentiation was found among newly established populations and between the newly established northern group and a nearly panmictic group composed of southern European populations and a population from Japan. Loss of genetic diversity was also seen in the north, likely caused by founder events during colonization. The few strongly supported outlier loci revealed a genetic structure uncorrelated with the north/south differentiation, but grouping two samples from the Danish fjords (northern group) and one from the Dutch Scheldt estuary (southern group) with the one from Japan. These findings might reflect the following: (i) parallel adaptation to similar environmental pressures (fjord-like environment) within each of the two groups or (ii) a footprint of a secondary introduction of an alternative genomic background maintained by multifarious isolation factors. Our results call for a closer examination of adaptive genetic structure in the area of origin. Text Crassostrea gigas Pacific oyster PubMed Central (PMC) Pacific Evolutionary Applications 6 7 1064 1078 |
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Original Articles |
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Original Articles Rohfritsch, Audrey Bierne, Nicolas Boudry, Pierre Heurtebise, Serge Cornette, Florence Lapègue, Sylvie Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas |
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Original Articles |
description |
Crassostrea gigas originated from the Pacific coast of Asia, but was introduced into several European countries in the early 1970s. Natural populations have now spread across the length of the western seaboard of Europe. To elucidate the demographic and selective processes at play during this rapid expansion, genome-scan analysis was performed on different populations. High diversities and low differentiation were observed overall, but significant genetic differentiation was found among newly established populations and between the newly established northern group and a nearly panmictic group composed of southern European populations and a population from Japan. Loss of genetic diversity was also seen in the north, likely caused by founder events during colonization. The few strongly supported outlier loci revealed a genetic structure uncorrelated with the north/south differentiation, but grouping two samples from the Danish fjords (northern group) and one from the Dutch Scheldt estuary (southern group) with the one from Japan. These findings might reflect the following: (i) parallel adaptation to similar environmental pressures (fjord-like environment) within each of the two groups or (ii) a footprint of a secondary introduction of an alternative genomic background maintained by multifarious isolation factors. Our results call for a closer examination of adaptive genetic structure in the area of origin. |
format |
Text |
author |
Rohfritsch, Audrey Bierne, Nicolas Boudry, Pierre Heurtebise, Serge Cornette, Florence Lapègue, Sylvie |
author_facet |
Rohfritsch, Audrey Bierne, Nicolas Boudry, Pierre Heurtebise, Serge Cornette, Florence Lapègue, Sylvie |
author_sort |
Rohfritsch, Audrey |
title |
Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas |
title_short |
Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas |
title_full |
Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas |
title_fullStr |
Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas |
title_full_unstemmed |
Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas |
title_sort |
population genomics shed light on the demographic and adaptive histories of european invasion in the pacific oyster, crassostrea gigas |
publisher |
Blackwell Publishing Ltd |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3804239 http://www.ncbi.nlm.nih.gov/pubmed/24187588 https://doi.org/10.1111/eva.12086 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3804239 http://www.ncbi.nlm.nih.gov/pubmed/24187588 http://dx.doi.org/10.1111/eva.12086 |
op_rights |
Copyright © 2013 Wiley Periodicals, Inc. http://creativecommons.org/licenses/by/2.5/ Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation. |
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CC-BY |
op_doi |
https://doi.org/10.1111/eva.12086 |
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Evolutionary Applications |
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6 |
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7 |
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1064 |
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1078 |
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