About the Authors

Andressa Nuss

Affiliation Departament of Genetics, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil

Caio J. Carlos

Affiliation Laboratório de Sistemática e Ecologia de Aves e Mamíferos Marinhos (LABSMAR), Departament of Zoology, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil

Ignacio B. Moreno

Affiliation Laboratório de Sistemática e Ecologia de Aves e Mamíferos Marinhos (LABSMAR), Departament of Zoology, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil

Nelson J. R. Fagundes

nelson.fagundes@ufrgs.br

Affiliation Departament of Genetics, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil

Competing Interests

The study received funding from Petrobras. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: AN CJC IBM NJRF. Performed the experiments: AN. Analyzed the data: AN NJRF. Contributed reagents/materials/analysis tools: IBM NJRF. Wrote the paper: AN CJC IBM NJRF.