​7) Negrey JD, Behringer V, Langergraber KE, and Deschner T (2021). Urinary neopterin of wild chimpanzees indicates that cell-mediated immune activity varies by age, sex, and female reproductive status. Scientific Reports 11(1): 9298. (Article link; PMC free article)
6) Sandel AA, Rushmore J, Negrey JD, Mitani JC, Lyons DM, and Caillaud D  (2020). Social network predicts exposure to respiratory infection in a wild chimpanzee group. EcoHealth 17: 437-448. (Article link; PMC free article)

5) Negrey JD, Emery Thompson ME, Langergraber KE, Machanda ZP, Mitani JC, Muller MN, Otali E, Owens LA, Wrangham RW, and Goldberg TL (2020). Demography, life history trade-offs, and the gastrointestinal virome of wild chimpanzees. Philosophical Transactions of the Royal Society B 375(1811): 20190613. (Article link)

4) Negrey JD, Sandel AA, and Langergraber KE (2020). Dominance rank and the presence of sexually receptive females predict feces-measured body temperature in male chimpanzees. Behavioral Ecology and Sociobiology 74(1): 5. (Article link; PMC free article)

3) Negrey JD and Langergraber KE (2020). Corpse-directed play parenting by a sterile adult female chimpanzee. Primates 61(1): 29-34. (Article link; PMC free article)

2) Negrey JD, Reddy RB, Scully EJ, Phillips-Garcia S, Owens L, Langergraber KE, Mitani J, Emery Thompson M, Wrangham RW, Muller MN, Otali E, Machanda Z, Hyeroba D, Grindle KA, Pappas TE, Palmenberg AC, Gern JE, and Goldberg TL (2019). Simultaneous outbreaks of respiratory disease in wild chimpanzees caused by distinct viruses of human origin. Emerging Microbes and Infections 8(1): 139-149. (Article link; PMC free article)

1) Behringer V, Deimel C, Hohmann G, Negrey J, Schaebs FS, and Deschner T (2018). Applications for non-invasive thyroid hormone measurements in mammalian ecology, growth, and maintenance. Hormones and Behavior 105: 66-85. (Article link)


Wood BM, Negrey JD, Brown JL, Deschner T, Emery Thompson M, Gunter S, Mitani JC, Watts DP, and Langergraber KE. Demographic and hormonal evidence for menopause in wild chimpanzees.


Negrey JD, Mitani JC, Wrangham RW, Otali E, Reddy RB, Pappas TE, Grindle KA, Gern JE, Machanda ZP, Muller MN, Langergraber KE, Emery Thompson M, and Goldberg TL. Viruses associated with ill health in wild chimpanzees.

6) Negrey JD. (2019). Immunofunction and reproductive effort in wild chimpanzees: Noninvasive field evidence for immunomodulation by gonadal steroids. 16th Annual Meeting of the Midwest Primate Interest Group, DeKalb, IL, USA. (Podium.)


5) Goldberg TL, Basnet S, Emery-Thompson M, Gern JE, Grindle KA, Langengraber KE, Machanda Z, Mitani JC, Muller MM, Negrey JD, Otali E, Owens L, Palmenberg AC, Pappas TE, Phillips-Garcia S, Reddy RB, Scully EJ, and Wrangham RW. (2019). Chimpanzee reverse zoonoses: Unfortunate natural experiments in great ape comparative medicine and demography. 88th Annual Meeting of the American Association of Physical Anthropologists, Cleveland, OH, USA. (Podium.)


4) Negrey JD, Langergraber KE, and Knott CD. (2018). Measuring wild chimpanzee body temperature from fecal deposits. 87th Annual Meeting of the American Association of Physical Anthropologists, Austin, TX, USA. (Podium.)


3) Negrey JD, Sandel AA, and Langergraber KE. (2016). Transmission of respiratory disease in the Ngogo chimpanzees: A social network analysis. 26th Congress of the International Primatological Society, Chicago, IL, USA. (Podium.)


2) Friend AN, Negrey JD, and Marchant LF. (2013). Ethological study of manual laterality in sanctuary chimpanzees (Pan troglodytes). 82nd Annual Meeting of the American Association of Physical Anthropologists, Knoxville, TN, USA. (Poster.)


1) Negrey JD. (2011). Mantled howler monkey (Alouatta palliata) long calls: Effects of habitat-dependent acoustic influences. 8th Annual Meeting of the Midwest Primate Interest Group, Kent State University, Kent, OH, USA. (Poster.)