About the Authors

Andrew D. Krystal

kryst001@mc.duke.edu

Affiliation Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, North Carolina, United States of America

Bobby Schopler

Affiliation Lemur Center, Duke University, Durham, North Carolina, United States of America

Susanne Kobbe

Affiliation Department of Animal Ecology and Conservation, Hamburg University, Hamburg, Germany

Cathy Williams

Affiliation Lemur Center, Duke University, Durham, North Carolina, United States of America

Hajanirina Rakatondrainibe

Affiliation Lemurs Biomedical Monitoring Environmental Department, Biodiversity Section, Ambatovy, Mineral Society Anonym, Antananarivo, Madagascar

Anne D. Yoder

Affiliations Lemur Center, Duke University, Durham, North Carolina, United States of America, Departments of Biology and Evolutionary Anthropology, Duke University, Durham, North Carolina, United States of America

Peter Klopfer

Affiliations Lemur Center, Duke University, Durham, North Carolina, United States of America, Department of Biology, Duke University, Durham, North Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AK PK AY. Performed the experiments: AK BS PK SK CW HR. Analyzed the data: AK SK PK. Contributed reagents/materials/analysis tools: AK PK AY SK. Wrote the paper: AK BS SK CW HR AY PK.