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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Methodological assessment of 2b-RAD genotyping technique for population structure inferences in yellowfin tuna (Thunnus albacares)
Marine Genomics, Volume 25, Year 2016
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Description
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. © 2015 Elsevier B.V.
Authors & Co-Authors
Pecoraro, Carlo
Italy, Bologna
Alma Mater Studiorum Università Di Bologna
France, Sete
Marbec Marine Biodiversity, Exploitation and Conservation
Villamor, Adriana
Italy, Bologna
Alma Mater Studiorum Università Di Bologna
Papetti, Chiara
Germany, Bremerhaven
Alfred-wegener-institut Helmholtz-zentrum Für Polar- Und Meeresforschung
Leroy, Bruno M.
New Caledonia, Noumea
Secretariat of the Pacific Community Noumea
Muir, Jeff Allen
United States, Honolulu
University of Hawaiʻi at Mānoa
Rooker, Jay R.
United States, College Station
Texas A&m University
Arocha, Freddy
Venezuela, Cumana
Universidad de Oriente - Venezuela
Murua, Hilario
Spain, Derio
Azti Fundazioa
Zudaire, Iker
France, Sete
Marbec Marine Biodiversity, Exploitation and Conservation
Spain, Bilbao
Ikerbasque, Basque Foundation for Science
Chassot, Emmanuel
France, Sete
Marbec Marine Biodiversity, Exploitation and Conservation
Bodin, Nathalie
France, Sete
Marbec Marine Biodiversity, Exploitation and Conservation
Tinti, Fausto
Italy, Bologna
Alma Mater Studiorum Università Di Bologna
Cariani, Alessia
Italy, Bologna
Alma Mater Studiorum Università Di Bologna
Statistics
Citations: 44
Authors: 13
Affiliations: 11
Identifiers
Doi:
10.1016/j.margen.2015.12.002
ISSN:
18747787
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study