About the Authors

Eckhard W. Heymann

eheyman@gwdg.de

Affiliation Abteilung Verhaltensökologie & Soziobiologie, Deutsches Primatenzentrum, Göttingen, Germany

Kathrin Lüttmann

Affiliation Abteilung Verhaltensökologie & Soziobiologie, Deutsches Primatenzentrum, Göttingen, Germany

Inga M. Michalczyk

Affiliations AG Naturschutzbiologie, Philipps-Universität Marburg, Marburg, Germany, Mobile DNAnalyse, Ebsdorfergrund, Germany

Pedro Pablo Pinedo Saboya

Affiliation Facultad de Ciencias Forestales, Universidad Nacional de la Amazonía Peruana, Iquitos, Peru

Birgit Ziegenhagen

Affiliation AG Naturschutzbiologie, Philipps-Universität Marburg, Marburg, Germany

Ronald Bialozyt

Affiliation AG Naturschutzbiologie, Philipps-Universität Marburg, Marburg, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EWH BZ RB. Analyzed the data: RB IMM EWH. Wrote the paper: EWH IMM BZ RB. Performed field work: KL PPPS. Performed genetic analyses: KL IMM.