Andreas Koenig

Professor, Department of Anthropology
Director, Major in Human Evolutionary Biology (EBH)
Director, Interdepartmental Doctoral Program in Anthropological Sciences (IDPAS)
Stony Brook University

My research revolves around the evolution of sociality and social behavior in nonhuman primates with digressions into reproductive seasonality, taxonomy, and research methods. I have worked on captive South American callitrichine monkeys (primarily common marmosets, Callithrix jacchus) in order to test hypotheses on predator-prey interactions (e.g., use of sentinels, effects of group size on vigilance), reproductive strategies (cause and consequences of deviations from monogamy), and cooperative infant care (effects of number of helpers). In addition, I studied wild Nepalese Gray langurs (Semnopithecus schistaceus) focusing particularly on costs of group size and ecological effects on female social relationships. In the last years, I studied wild Phayre's leaf monkeys (Trachypithecus phayrei crepusculus) focusing on the costs and benefits of sociality, the ecology of female relationships, and male reproductive strategies. In addition, I extended my work on comparative research with an emphasis on phylogenetic constraints on behavior, socio-ecological models, and primate life histories.
Latest Publications
(for a complete overview check my page on 
  • Borries C, Perlman RF*, Koenig A. in press. Characteristics of alpha males in Nepal Gray langurs. Am J Primatol doi: 10.1002/ajp.22437
  • Ganzhorn JU, Arrigo-Nelson S, Carrai V, Chalise MK, Donati G, Droescher I, Eppley T, Irwin MT, Koch F, Koenig A, Kowalewski MM, Mowry CB, Patel ER, Pichon C, Ralison J, Reisdorff C, Simmen B, Stalenberg E, Terboven J, Wright PC, Foley WF. in press. The importance of protein in leaf selection of folivorous primates. Am J Primatol. doi: 10.1002/ajp.22550
  • Borries C, Sandel AA, Koenig A, Fernandez-Duque E, Kamilar JM, Amoroso CR, Barton RA, Bray J, Di Fiore A, Gilby IC, Gordon AD, Mundry R, Port M, Powell LE, Pusey AE, Rusk C, Spriggs A, Nunn CL. 2016. Transparency, usability, and reproducibility: a four-step plan toward improved comparative databases using primates as examples. Evol Anthropol 25:232-238. doi: 10.1002/evan.21502
  • de Vries D*, Koenig A, Borries C. 2016. Female reproductive success in an unstable hierarchy: the effects of age and rank. Integr Zool 11:433-446. doi: 10.1111/1749-4877.12201
  • Lu A, Borries C, Gustison M, Larney E, Koenig A. 2016. Age and reproductive status influence female dominance rank in wild Phayre's leaf monkeys. Anim Behav 117:145-153. doi: 10.1016/j.anbehav.2016.04.020
  • Perlman RF*, Borries C, Koenig A. 2016. Dominance relationships in male Nepal gray langurs (Semnopithecus schistaceus). Am J Phys Anthropol 160:208-219. doi: 10.1002/ajp.22958
  • Borries C, Grassman LI Jr, Larney E, Tewes ME, Koenig A. 2015. Survival of a wild female marbled cat to at least 10 years of age. Cat News 26:15-16
*indicates undergraduate/ graduate student or former field assistant

Ph.D. students

Marcy S. Ekanayake-Weber
Rachel F. Perlman (co-advisor w/ Amy Lu)
Evelyn L. Pain

Undergraduate & Graduate Courses

ANP120 Introduction to Biological Anthropology
ANP220 Controversies in Human Biology and Behavior
ANT/DPA550 Theory and Methods in Primatology
ANT/DPA567 Primate Behavior and Ecology