About the Authors

Eduardo Fernández-Duque

eduardof@sas.upenn.edu

Affiliations Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America, CECOAL-Conicet, Corrientes, Argentina

Horacio de la Iglesia

Affiliation Department of Biology, University of Washington, Seattle, Washington, United States of America

Hans G. Erkert

Affiliation Institute for Zoology, University of Tübingen, Tübingen, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EFD HGE. Performed the experiments: EFD HGE. Analyzed the data: EFD HdlI HGE. Contributed reagents/materials/analysis tools: EFD HGE. Wrote the paper: EFD HdlI HGE.