About the Authors

Ana Gordoa

gordoa@ceab.csic.es

Affiliation Department of Marine Ecology, Centro de Estudios Avanzados de Blanes, Spanish National Research Council (CSIC), Blanes, Girona, Spain

Nuria Sanz

Affiliation Laboratori d'Ictiologia Genètica, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Girona, Spain

Jordi Viñas

Affiliation Laboratori d'Ictiologia Genètica, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Girona, Spain

Competing Interests

This study has been partly funded by a commercial company ("Balfego Tuna SL Group") and this does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: AG. Performed the experiments: AG. Analyzed the data: JV NS. Contributed reagents/materials/analysis tools: AG NS JV. Wrote the paper: AG NS JV.