• Catalogue PIGMA
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The fate of a polygenic phenotype within the genomic landscapes of introgression in the European seabass hybrid zone

Unraveling the evolutionary mechanisms and consequences of hybridization is a major concern in biology. Many studies have documented the interplay between recombination and selection in modulating the genomic landscape of introgression, but few have considered how associations with phenotype may affect this landscape. Here, we use the European seabass (Dicentrarchus labrax), a key species in marine aquaculture that undergoes natural hybridization, to determine how selection on phenotype modulates the introgression landscape between Atlantic and Mediterranean lineages. We use a high-density SNP array to assess individual local ancestry along the genome and improve the mapping of muscle fat content, a polygenic trait that is divergent between lineages. Taking into account variation in recombination rates, we reveal a purging of Atlantic ancestry in the admixed Mediterranean populations. While Atlantic individuals had higher muscle fat content, we observed that genomic regions associated with this trait also displayed reduced introgression of Atlantic ancestry. These results emphasize how selection against maladapted alleles shape the genomic landscape of introgression.

Simple

Date (Publication)
2020
Date (Revision)
2024-10-03
Other citation details
Leitwein Maeva, Durif Ghislain, Delpuech Emilie, Gagnaire Pierre-Alexandre, Ernande Bruno, Vandeputte Marc, Vergnet Alain, Duranton Maud, Clota Frederic, Allal Francois (2020). The fate of a polygenic phenotype within the genomic landscapes of introgression in the European seabass hybrid zone. SEANOE. https://doi.org/10.17882/98771
Credit
L.M. was supported by a grant from Ifremer’s Scientific Board. This project was carried out with the support of the Ifremer MARBEC Experimental Aquaculture Research Station staff and facilities. This study received funding from European Union’s Horizon 2020 work program under the grant No. 652831 agreement (AQUAEXCEL2020), and from the French Ministry of the Sea (Direction générale des affaires maritimes, de la pêche et de l'aquaculture) under grant CRECHE2020.
Author
  UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France - LEITWEIN Maeva
Author
  IMAG - Institut Montpelliérain Alexander Grothendieck, Montpellier, France - DURIF Ghislain
Author
  UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France - DELPUECH Emilie
Author
  ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France - GAGNAIRE Pierre-Alexandre
Author
  UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France - ERNANDE Bruno
Author
  UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France - VANDEPUTTE Marc
Author
  UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France - VERGNET Alain
Author
  UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France - DURANTON Maud
Author
  UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France - CLOTA Frederic
Author
  UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France - ALLAL Francois
Publisher
  SEANOE
Theme
  • Hybridization
  • Introgression
  • phenotype
  • European seabass
  • selection
  • recombination
  • Environment
project
  • FP7 AQUA EXCEL (Agreement: 262336)
ODATIS aggregation parameters and Essential Variable names
  • Bioinformatics
SeaDataNet Parameter Disciplines
  • Environment
Type de jeux de donnée ODATIS
  • Analysis data
Use limitation
CC-BY-NC (Creative Commons - Attribution, No commercial usage)
Use constraints
Other restrictions
Date (Publication)
2024
Publisher
  Oxford University Press (OUP)
Author
  Leitwein Maeva
Author
  Durif Ghislain
Author
  Delpuech Emilie
Author
  Gagnaire Pierre-Alexandre
Author
  Ernande Bruno
Author
  Vandeputte Marc
Author
  Vergnet Alain
Author
  Duranton Maud
Author
  Clota Frederic
Author
  Allal Francois
Unique resource identifier
10.1093/molbev/msae194
Association Type
Cross reference
Initiative Type
Study
Metadata language
English
Topic category
  • Oceans
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Distribution format
  • VCF ( )

OnLine resource
Raw data ( WWW:DOWNLOAD-1.0-link--download )

Genotyping data in VCF format for Offspring and parents - 353 MB

OnLine resource
DOI of the product ( WWW:LINK-1.0-http--metadata-URL )
OnLine resource
Seanoe ( rel-canonical )
Hierarchy level
Dataset
Statement
Genotyping data obtained by DLabCHIP Axiom SNP array (Griot et al, 2020, https://doi.org/10.1016/j.aquaculture.2020.735930)
File identifier
seanoe:98771 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2024-10-03
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  UMR Marbec, Université Montpellier, CNRS, Ifremer, IRD, INRAE, Montpellier, France - ALLAL Francois
 
 

Overviews

overview
Genetic card obtained for the offspring of the study from SNP genetyped with the DLabCHIP Axiom array

Spatial extent

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W
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Keywords

Environment European seabass Hybridization Introgression phenotype recombination selection
ODATIS aggregation parameters and Essential Variable names
Bioinformatics
Type de jeux de donnée ODATIS
Analysis data

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