Analysis of Genome-Wide Differentiation between Native and Introduced Populations of the Cupped Oysters Crassostrea gigas and Crassostrea angulata
International audience The Pacific cupped oyster is genetically subdivided into two sister taxa, Crassostrea gigas and Crassostrea angulata, which are in contact in the northwestern Pacific. The nature and origin of their genetic and taxonomic differentiation remains controversial due the lack of kn...
Published in: | Genome Biology and Evolution |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2018
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Subjects: | |
Online Access: | https://hal.science/hal-02395878 https://hal.science/hal-02395878/document https://hal.science/hal-02395878/file/Gagnaire,%20GBE,%202018.%20Analysis%20of%20GW%20differentiation%20between%20native%20and%20introduced%20populations%20of%20cupped%20oysters.pdf https://doi.org/10.1093/gbe/evy194 |
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openpolar |
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Open Polar |
collection |
CIRAD: HAL (Agricultural Research for Development) |
op_collection_id |
ftciradhal |
language |
English |
topic |
cupped oysters genome assembly species divergence reproductive barriers recombination rate ACL [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] |
spellingShingle |
cupped oysters genome assembly species divergence reproductive barriers recombination rate ACL [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] Gagnaire, Pierre-Alexandre Lamy, Jean-Baptiste Cornette, Florence Heurtebise, Serge Degremont, Lionel Flahauw, Emilie Boudry, Pierre Bierne, Nicolas Lapègue, Sylvie Analysis of Genome-Wide Differentiation between Native and Introduced Populations of the Cupped Oysters Crassostrea gigas and Crassostrea angulata |
topic_facet |
cupped oysters genome assembly species divergence reproductive barriers recombination rate ACL [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] |
description |
International audience The Pacific cupped oyster is genetically subdivided into two sister taxa, Crassostrea gigas and Crassostrea angulata, which are in contact in the northwestern Pacific. The nature and origin of their genetic and taxonomic differentiation remains controversial due the lack of known reproductive barriers and the high degree of morphologic similarity. In particular, whether the presence of ecological and/or intrinsic isolating mechanisms contributes to species divergence is unknown. The recent co-introduction of both taxa into Europe offers a unique opportunity to test how genetic differentiation is maintained under new environmental and demographic conditions. We generated a pseudochromosome assembly of the Pacific oyster genome using a combination of BAC-end sequencing and scaffold anchoring to a new high-density linkage map. We characterized genome-wide differentiation between C. angulata and C. gigas in both their native and introduced ranges, and showed that gene flow between species has been facilitated by their recent co-introductions in Europe. Nevertheless, patterns of genomic divergence between species remain highly similar in Asia and Europe, suggesting that the environmental transition caused by the co-introduction of the two species did not affect the genomic architecture of their partial reproductive isolation. Increased genetic differentiation was preferentially found in regions of low recombination. Using historical demographic inference, we show that the hetero-geneity of differentiation across the genome is well explained by a scenario whereby recent gene flow has eroded past differentiation at different rates across the genome after a period of geographical isolation. Our results thus support the view that low-recombining regions help in maintaining intrinsic genetic differences between the two species. |
author2 |
Institut des Sciences de l'Evolution de Montpellier (UMR ISEM) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS) Unité Santé, Génétique et Microbiologie des Mollusques (SGMM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) ANR-08-GENM-0041,Gametogenes,Génomiques de la gamétogénèse chez l'huître creuse Crassostrea gigas(2008) |
format |
Article in Journal/Newspaper |
author |
Gagnaire, Pierre-Alexandre Lamy, Jean-Baptiste Cornette, Florence Heurtebise, Serge Degremont, Lionel Flahauw, Emilie Boudry, Pierre Bierne, Nicolas Lapègue, Sylvie |
author_facet |
Gagnaire, Pierre-Alexandre Lamy, Jean-Baptiste Cornette, Florence Heurtebise, Serge Degremont, Lionel Flahauw, Emilie Boudry, Pierre Bierne, Nicolas Lapègue, Sylvie |
author_sort |
Gagnaire, Pierre-Alexandre |
title |
Analysis of Genome-Wide Differentiation between Native and Introduced Populations of the Cupped Oysters Crassostrea gigas and Crassostrea angulata |
title_short |
Analysis of Genome-Wide Differentiation between Native and Introduced Populations of the Cupped Oysters Crassostrea gigas and Crassostrea angulata |
title_full |
Analysis of Genome-Wide Differentiation between Native and Introduced Populations of the Cupped Oysters Crassostrea gigas and Crassostrea angulata |
title_fullStr |
Analysis of Genome-Wide Differentiation between Native and Introduced Populations of the Cupped Oysters Crassostrea gigas and Crassostrea angulata |
title_full_unstemmed |
Analysis of Genome-Wide Differentiation between Native and Introduced Populations of the Cupped Oysters Crassostrea gigas and Crassostrea angulata |
title_sort |
analysis of genome-wide differentiation between native and introduced populations of the cupped oysters crassostrea gigas and crassostrea angulata |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-02395878 https://hal.science/hal-02395878/document https://hal.science/hal-02395878/file/Gagnaire,%20GBE,%202018.%20Analysis%20of%20GW%20differentiation%20between%20native%20and%20introduced%20populations%20of%20cupped%20oysters.pdf https://doi.org/10.1093/gbe/evy194 |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
ISSN: 1759-6653 EISSN: 1759-6653 Genome Biology and Evolution https://hal.science/hal-02395878 Genome Biology and Evolution, 2018, 10 (9), pp.2518-2534. ⟨10.1093/gbe/evy194⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/gbe/evy194 hal-02395878 https://hal.science/hal-02395878 https://hal.science/hal-02395878/document https://hal.science/hal-02395878/file/Gagnaire,%20GBE,%202018.%20Analysis%20of%20GW%20differentiation%20between%20native%20and%20introduced%20populations%20of%20cupped%20oysters.pdf doi:10.1093/gbe/evy194 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1093/gbe/evy194 |
container_title |
Genome Biology and Evolution |
container_volume |
10 |
container_issue |
9 |
container_start_page |
2518 |
op_container_end_page |
2534 |
_version_ |
1799478836494073856 |
spelling |
ftciradhal:oai:HAL:hal-02395878v1 2024-05-19T07:39:17+00:00 Analysis of Genome-Wide Differentiation between Native and Introduced Populations of the Cupped Oysters Crassostrea gigas and Crassostrea angulata Gagnaire, Pierre-Alexandre Lamy, Jean-Baptiste Cornette, Florence Heurtebise, Serge Degremont, Lionel Flahauw, Emilie Boudry, Pierre Bierne, Nicolas Lapègue, Sylvie Institut des Sciences de l'Evolution de Montpellier (UMR ISEM) Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS) Unité Santé, Génétique et Microbiologie des Mollusques (SGMM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) ANR-08-GENM-0041,Gametogenes,Génomiques de la gamétogénèse chez l'huître creuse Crassostrea gigas(2008) 2018-09 https://hal.science/hal-02395878 https://hal.science/hal-02395878/document https://hal.science/hal-02395878/file/Gagnaire,%20GBE,%202018.%20Analysis%20of%20GW%20differentiation%20between%20native%20and%20introduced%20populations%20of%20cupped%20oysters.pdf https://doi.org/10.1093/gbe/evy194 en eng HAL CCSD Society for Molecular Biology and Evolution info:eu-repo/semantics/altIdentifier/doi/10.1093/gbe/evy194 hal-02395878 https://hal.science/hal-02395878 https://hal.science/hal-02395878/document https://hal.science/hal-02395878/file/Gagnaire,%20GBE,%202018.%20Analysis%20of%20GW%20differentiation%20between%20native%20and%20introduced%20populations%20of%20cupped%20oysters.pdf doi:10.1093/gbe/evy194 info:eu-repo/semantics/OpenAccess ISSN: 1759-6653 EISSN: 1759-6653 Genome Biology and Evolution https://hal.science/hal-02395878 Genome Biology and Evolution, 2018, 10 (9), pp.2518-2534. ⟨10.1093/gbe/evy194⟩ cupped oysters genome assembly species divergence reproductive barriers recombination rate ACL [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] info:eu-repo/semantics/article Journal articles 2018 ftciradhal https://doi.org/10.1093/gbe/evy194 2024-05-02T00:18:52Z International audience The Pacific cupped oyster is genetically subdivided into two sister taxa, Crassostrea gigas and Crassostrea angulata, which are in contact in the northwestern Pacific. The nature and origin of their genetic and taxonomic differentiation remains controversial due the lack of known reproductive barriers and the high degree of morphologic similarity. In particular, whether the presence of ecological and/or intrinsic isolating mechanisms contributes to species divergence is unknown. The recent co-introduction of both taxa into Europe offers a unique opportunity to test how genetic differentiation is maintained under new environmental and demographic conditions. We generated a pseudochromosome assembly of the Pacific oyster genome using a combination of BAC-end sequencing and scaffold anchoring to a new high-density linkage map. We characterized genome-wide differentiation between C. angulata and C. gigas in both their native and introduced ranges, and showed that gene flow between species has been facilitated by their recent co-introductions in Europe. Nevertheless, patterns of genomic divergence between species remain highly similar in Asia and Europe, suggesting that the environmental transition caused by the co-introduction of the two species did not affect the genomic architecture of their partial reproductive isolation. Increased genetic differentiation was preferentially found in regions of low recombination. Using historical demographic inference, we show that the hetero-geneity of differentiation across the genome is well explained by a scenario whereby recent gene flow has eroded past differentiation at different rates across the genome after a period of geographical isolation. Our results thus support the view that low-recombining regions help in maintaining intrinsic genetic differences between the two species. Article in Journal/Newspaper Crassostrea gigas Pacific oyster CIRAD: HAL (Agricultural Research for Development) Genome Biology and Evolution 10 9 2518 2534 |