European sea bass genome and its variation provide insights into adaptation to euryhalinity and speciation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nature Communications Année : 2014

European sea bass genome and its variation provide insights into adaptation to euryhalinity and speciation

Bruno Louro
  • Fonction : Auteur
Rute S.T. Martins
  • Fonction : Auteur
Jochen Hecht
  • Fonction : Auteur
Florian Knaust
  • Fonction : Auteur
Roland Dieterich
  • Fonction : Auteur
Kurt Stueber
  • Fonction : Auteur

Résumé

The European sea bass (Dicentrarchus labrax) is a temperate-zone euryhaline teleost of prime importance for aquaculture and fisheries. This species is subdivided into two naturally hybridizing lineages, one inhabiting the northeastern Atlantic Ocean and the other the Mediterranean and Black seas. Here we provide a high-quality chromosome-scale assembly of its genome that shows a high degree of synteny with the more highly derived teleosts. We find expansions of gene families specifically associated with ion and water regulation, highlighting adaptation to variation in salinity. We further generate a genome-wide variation map through RAD-sequencing of Atlantic and Mediterranean populations. We show that variation in local recombination rates strongly influences the genomic landscape of diversity within and differentiation between lineages. Comparing predictions of alternative demographic models to the joint allele-frequency spectrum indicates that genomic islands of differentiation between sea bass lineages were generated by varying rates of introgression across the genome following a period of geographical isolation.
Fichier principal
Vignette du fichier
Tine, Nature Comms, 2014. European sea bass genome and its variation provide insights into adapatation to euryhalinity and speciation.pdf (1.95 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01922671 , version 1 (05-12-2019)

Identifiants

Citer

Mbaye Tine, Heiner Kuhl, Pierre-Alexandre Gagnaire, Bruno Louro, Erick Desmarais, et al.. European sea bass genome and its variation provide insights into adaptation to euryhalinity and speciation. Nature Communications, 2014, 5 (1), ⟨10.1038/ncomms6770⟩. ⟨hal-01922671⟩
518 Consultations
94 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More