About the Authors

Rebecca Kormos

rebeccakormos@yahoo.com

Affiliation Department of Integrative Biology, University of California, Berkeley, California, United States of America

Cyril F. Kormos

Affiliation The WILD Foundation, Berkeley, California, United States of America

Tatyana Humle

Affiliation Durrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury, United Kingdom

Annette Lanjouw

Affiliation Strategic Initiatives and Great Apes Program, The Arcus Foundation, Cambridge, United Kingdom

Helga Rainer

Affiliation Conservation Program, The Arcus Foundation, Cambridge, United Kingdom

Ray Victurine

Affiliation Business Conservation Initiative and Conservation Finance, Wildlife Conservation Society, Bronx, New York, United States of America

Russell A. Mittermeier

Affiliation Conservation International, Arlington, Virginia, United States of America

Mamadou S. Diallo

Affiliation Guinée Écologie, Conakry, Republic of Guinea

Anthony B. Rylands

Affiliation Conservation International, Arlington, Virginia, United States of America

Elizabeth A. Williamson

Affiliation Scottish Primate Research Group, School of Natural Sciences, University of Stirling, Scotland, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RK CFK. Performed the experiments: RK CFK TH MSD. Analyzed the data: RK CFK TH MSD. Contributed to the writing of the manuscript: RK CFK TH AL HR RV RAM MSD AR EAW.