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Article Dans Une Revue Marine Genomics Année : 2016

Methodological assessment of 2b-RAD genotyping technique for population structure inferences in yellowfin tuna ( Thunnus albacares )

Massimiliano Babbucci
  • Fonction : Auteur
Adriana Villamor
  • Fonction : Auteur
Rafaella Franch
  • Fonction : Auteur
Chiara Papetti
  • Fonction : Auteur
Bruno Leroy
  • Fonction : Auteur
Sofia Ortega-Garcia
  • Fonction : Auteur
Jeff Muir
  • Fonction : Auteur
Jay Rooker
  • Fonction : Auteur
Freddy Arocha
  • Fonction : Auteur
Hilario Murua
  • Fonction : Auteur
Fausto Tinti
  • Fonction : Auteur
Luca Bargelloni
  • Fonction : Auteur
Alessia Cariani
  • Fonction : Auteur

Résumé

Global population genetic structure of yellowfin tuna (Thunnus albacares) is still poorly understood despite its relevance for the tuna fishery industry. Low levels of genetic differentiation among oceans speak in favour of the existence of a single panmictic population worldwide of this highly migratory fish. However, recent studies indicated genetic structuring at a much smaller geographic scales than previously considered, pointing out that YFT population genetic structure has not been properly assessed so far. In this study, we demonstrated for the first time, the utility of 2b-RAD genotyping technique for investigating population genetic diversity and differentiation in high gene-flow species. Running de novo pipeline in Stacks, a total of 6772 high-quality genome-wide SNPs were identified across Atlantic, Indian and Pacific population samples representing all major distribution areas. Preliminary analyses showed shallow but significant population structure among oceans (FST=0.0273; P-value<0.01). Discriminant Analysis of Principal Components endorsed the presence of genetically discrete yellowfin tuna populations among three oceanic pools. Although such evidence needs to be corroborated by increasing sample size, these results showed the efficiency of this genotyping technique in assessing genetic divergence in a marine fish with high dispersal potential.

Dates et versions

hal-01923687 , version 1 (15-11-2018)

Identifiants

Citer

Carlo Pecoraro, Massimiliano Babbucci, Adriana Villamor, Rafaella Franch, Chiara Papetti, et al.. Methodological assessment of 2b-RAD genotyping technique for population structure inferences in yellowfin tuna ( Thunnus albacares ). Marine Genomics, 2016, 25, pp.43 - 48. ⟨10.1016/j.margen.2015.12.002⟩. ⟨hal-01923687⟩
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