About the Authors

Dietmar Zinner

dzinner@gwdg.de

Affiliation Cognitive Ethology, Deutsches Primatenzentrum, Göttingen, Germany

Michael L. Arnold

Affiliation Department of Genetics, University of Georgia, Athens, Georgia, United States of America

Christian Roos

Affiliation Primate Genetics and Gene Bank of Primates, Deutsches Primatenzentrum, Göttingen, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DZ. Analyzed the data: DZ CR. Wrote the paper: DZ MA CR.