Strong selection pressures maintain divergence on genomic islands in Atlantic cod (Gadus morhua L.) populations
International audience Background: two distinct populations have been extensively studied in Atlantic cod (Gadus morhua L.): the Northeast Arctic cod (NEAC) population and the coastal cod (CC) population. The objectives of the current study were to identify genomic islands of divergence and to propo...
Published in: | Genetics Selection Evolution |
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Online Access: | https://hal.science/hal-02344196 https://hal.science/hal-02344196/document https://hal.science/hal-02344196/file/12711_2019_Article_503.pdf https://doi.org/10.1186/s12711-019-0503-5 |
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ftunivnantes:oai:HAL:hal-02344196v1 2023-05-15T14:30:30+02:00 Strong selection pressures maintain divergence on genomic islands in Atlantic cod (Gadus morhua L.) populations Rodríguez-Ramilo, Silvia Teresa Baranski, Matthew Moghadam, Hooman Grove, Harald Lien, Sigbjørn Goddard, Mike E. Meuwissen, Theo H. E. Sonesson, Anna K. Génétique Physiologie et Systèmes d'Elevage (GenPhySE ) Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT) Institut National Polytechnique (Toulouse) (Toulouse INP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-École nationale supérieure agronomique de Toulouse ENSAT Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology (INIA) Norwegian University of Life Sciences (NMBU) University of Melbourne Spanish Government CGL2012-39861-C02-02 2019 https://hal.science/hal-02344196 https://hal.science/hal-02344196/document https://hal.science/hal-02344196/file/12711_2019_Article_503.pdf https://doi.org/10.1186/s12711-019-0503-5 en eng HAL CCSD BioMed Central info:eu-repo/semantics/altIdentifier/doi/10.1186/s12711-019-0503-5 info:eu-repo/semantics/altIdentifier/pmid/31664896 hal-02344196 https://hal.science/hal-02344196 https://hal.science/hal-02344196/document https://hal.science/hal-02344196/file/12711_2019_Article_503.pdf doi:10.1186/s12711-019-0503-5 PRODINRA: 491863 PUBMED: 31664896 WOS: 000501813700002 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0999-193X EISSN: 1297-9686 Genetics Selection Evolution https://hal.science/hal-02344196 Genetics Selection Evolution, 2019, 51 (1), pp.61. ⟨10.1186/s12711-019-0503-5⟩ viral nervous necrosis stationary ecotype read alignment gene flow differentiation resistance costal vibriosis [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2019 ftunivnantes https://doi.org/10.1186/s12711-019-0503-5 2023-02-22T07:30:20Z International audience Background: two distinct populations have been extensively studied in Atlantic cod (Gadus morhua L.): the Northeast Arctic cod (NEAC) population and the coastal cod (CC) population. The objectives of the current study were to identify genomic islands of divergence and to propose an approach to quantify the strength of selection pressures using whole-genome single nucleotide polymorphism (SNP) data. After applying filtering criteria, information on 93 animals (9 CC individuals, 50 NEAC animals and 34 CC × NEAC crossbred individuals) and 3,123,434 autosomal SNPs were used.Results: Four genomic islands of divergence were identified on chromosomes 1, 2, 7 and 12, which were mapped accurately based on SNP data and which extended in size from 11 to 18 Mb. These regions differed considerably between the two populations although the differences in the rest of the genome were small due to considerable gene flow between the populations. The estimates of selection pressures showed that natural selection was substantially more important than genetic drift in shaping these genomic islands. Our data confirmed results from earlier publications that suggested that genomic islands are due to chromosomal rearrangements that are under strong selection and reduce recombination between rearranged and non-rearranged segments.Conclusion: Our findings further support the hypothesis that selection and reduced recombination in genomic islands may promote speciation between these two populations although their habitats overlap considerably and migrations occur between them Article in Journal/Newspaper Arctic cod Arctic atlantic cod Gadus morhua Northeast Arctic cod Université de Nantes: HAL-UNIV-NANTES Arctic Genetics Selection Evolution 51 1 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
viral nervous necrosis stationary ecotype read alignment gene flow differentiation resistance costal vibriosis [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
viral nervous necrosis stationary ecotype read alignment gene flow differentiation resistance costal vibriosis [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] [SDE.BE]Environmental Sciences/Biodiversity and Ecology Rodríguez-Ramilo, Silvia Teresa Baranski, Matthew Moghadam, Hooman Grove, Harald Lien, Sigbjørn Goddard, Mike E. Meuwissen, Theo H. E. Sonesson, Anna K. Strong selection pressures maintain divergence on genomic islands in Atlantic cod (Gadus morhua L.) populations |
topic_facet |
viral nervous necrosis stationary ecotype read alignment gene flow differentiation resistance costal vibriosis [SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Background: two distinct populations have been extensively studied in Atlantic cod (Gadus morhua L.): the Northeast Arctic cod (NEAC) population and the coastal cod (CC) population. The objectives of the current study were to identify genomic islands of divergence and to propose an approach to quantify the strength of selection pressures using whole-genome single nucleotide polymorphism (SNP) data. After applying filtering criteria, information on 93 animals (9 CC individuals, 50 NEAC animals and 34 CC × NEAC crossbred individuals) and 3,123,434 autosomal SNPs were used.Results: Four genomic islands of divergence were identified on chromosomes 1, 2, 7 and 12, which were mapped accurately based on SNP data and which extended in size from 11 to 18 Mb. These regions differed considerably between the two populations although the differences in the rest of the genome were small due to considerable gene flow between the populations. The estimates of selection pressures showed that natural selection was substantially more important than genetic drift in shaping these genomic islands. Our data confirmed results from earlier publications that suggested that genomic islands are due to chromosomal rearrangements that are under strong selection and reduce recombination between rearranged and non-rearranged segments.Conclusion: Our findings further support the hypothesis that selection and reduced recombination in genomic islands may promote speciation between these two populations although their habitats overlap considerably and migrations occur between them |
author2 |
Génétique Physiologie et Systèmes d'Elevage (GenPhySE ) Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT) Institut National Polytechnique (Toulouse) (Toulouse INP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-École nationale supérieure agronomique de Toulouse ENSAT Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology (INIA) Norwegian University of Life Sciences (NMBU) University of Melbourne Spanish Government CGL2012-39861-C02-02 |
format |
Article in Journal/Newspaper |
author |
Rodríguez-Ramilo, Silvia Teresa Baranski, Matthew Moghadam, Hooman Grove, Harald Lien, Sigbjørn Goddard, Mike E. Meuwissen, Theo H. E. Sonesson, Anna K. |
author_facet |
Rodríguez-Ramilo, Silvia Teresa Baranski, Matthew Moghadam, Hooman Grove, Harald Lien, Sigbjørn Goddard, Mike E. Meuwissen, Theo H. E. Sonesson, Anna K. |
author_sort |
Rodríguez-Ramilo, Silvia Teresa |
title |
Strong selection pressures maintain divergence on genomic islands in Atlantic cod (Gadus morhua L.) populations |
title_short |
Strong selection pressures maintain divergence on genomic islands in Atlantic cod (Gadus morhua L.) populations |
title_full |
Strong selection pressures maintain divergence on genomic islands in Atlantic cod (Gadus morhua L.) populations |
title_fullStr |
Strong selection pressures maintain divergence on genomic islands in Atlantic cod (Gadus morhua L.) populations |
title_full_unstemmed |
Strong selection pressures maintain divergence on genomic islands in Atlantic cod (Gadus morhua L.) populations |
title_sort |
strong selection pressures maintain divergence on genomic islands in atlantic cod (gadus morhua l.) populations |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02344196 https://hal.science/hal-02344196/document https://hal.science/hal-02344196/file/12711_2019_Article_503.pdf https://doi.org/10.1186/s12711-019-0503-5 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic atlantic cod Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod Arctic atlantic cod Gadus morhua Northeast Arctic cod |
op_source |
ISSN: 0999-193X EISSN: 1297-9686 Genetics Selection Evolution https://hal.science/hal-02344196 Genetics Selection Evolution, 2019, 51 (1), pp.61. ⟨10.1186/s12711-019-0503-5⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1186/s12711-019-0503-5 info:eu-repo/semantics/altIdentifier/pmid/31664896 hal-02344196 https://hal.science/hal-02344196 https://hal.science/hal-02344196/document https://hal.science/hal-02344196/file/12711_2019_Article_503.pdf doi:10.1186/s12711-019-0503-5 PRODINRA: 491863 PUBMED: 31664896 WOS: 000501813700002 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1186/s12711-019-0503-5 |
container_title |
Genetics Selection Evolution |
container_volume |
51 |
container_issue |
1 |
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1766304346191953920 |