Ian C. Gilby, PhD

Gilby, I.C., Machanda, Z.P., O’Malley, R.C., Murray, C.M., Lonsdorf, E.V., Walker, K., Mjungu, D.C., Otali, E., Muller, M.N., Emery Thompson, M., Pusey, A.E., Wrangham, R.W. 2017. Predation by female chimpanzees: toward an understanding of sex differences in meat acquisition in the last common ancestor of Pan and Homo. Journal of Human Evolution 110: 82-94.

 

Bray, J., Pusey, A.E., Gilby, I.C. (2016) Incomplete control and concessions explain mating skew in male chimpanzees. Proceedings of the Royal Society Series B. 283: 20162071.

 

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Foerster, S., Franz, M., Murray, C.M., Gilby, I.C., Feldblum, J.T., Walker, K.K., Pusey, A.E. (2016) Chimpanzee females queue but males compete for social status. Scientific Reports 6: 35404.

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Borries, C., Sandel, A., Koenig, A., Fernandez-Duque, E., Kamilar, J., Amoroso, C., Barton., R., Bray, J., Di Fiore, A., Gilby, I., Gordon, A., Mundry, R., Port, M., Powell, L., Spriggs, A., Nunn, C. (2016) Transparancy, usability, and reproducibility: guiding principles for improving comparative databases using primates as examples. Evolutionary Anthropology 25: 232-238.

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Stevens, J.R., Marewski, J.N., Schooler, L.J., Gilby, I.C. (2016). Reflections of the social environment in chimpanzee memory: applying rational analysis beyond humans. Royal Society Open Science 3: 160293.

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O'Malley, R.C., Stanton, M.A., Gilby, I.C., Lonsdorf, E.V., Pusey, A.E., Markham, A.C., Murray, C.M. (2016). Reproductive state and rank influence patterns of meat consumption in wild female chimpanzees (Pan troglodytes schweinfurthii). Journal of Human Evolution 90: 16-28

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Gilby, I.C., Machanda, Z.P., Mjungu, D.C., Rosen, J. Muller, M.N., Pusey, A.E., Wrangham, R.W. (2015). Impact hunters catalyse cooperative hunting in two wild chimpanzee communities. Philosophical Transactions of the Royal Society Series B: 370: 20150005

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Foerster, S., McLellan, K., Schroepfer-Walker, K., Murray, C. M., Krupenye, C., Gilby, I. C. & Pusey, A. E. (2015). Social bonds in the dispersing sex: partner preferences among adult female chimpanzees. Animal Behaviour: 105: 139-152.

 

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Feldblum, J. T., Wroblewski, E. E., Rudicell, R. S., Hahn, B. H., Paiva, T., Cetinkaya-Rundel, M., Pusey, A. E. & Gilby, I. C. (2014). Sexually Coercive Male Chimpanzees Sire More Offspring. Current Biology 24: 2855-2860.

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Wilson, M.L., Boesch, C., Fruth, B., Furuichi, T., Gilby, I.C., Hashimoto, C., Hobaiter, C., Hohmann, G., Itoh, N., Koops, K., Lloyd, J., Matsuzawa, T., Mitani, J.C., Mjungu, D.C., Morgan, D., Muller, M.N., Mundry, R., Nakamura, M., Pruetz, J., Pusey, A.E., Riedel, J., Sanz, C., Schel, A., Simmons, N., Waller, M., Watts, D.P., White, F.J., Wittig, R.M., Zuberbühler, K. & Wrangham, R.W. (2014).  Lethal aggression in Pan is better explained by adaptive strategies than human impacts. Nature 513: 414-417.

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Tennie, C., O'Malley, R.C. & Gilby, I. C. (2014).  Why do chimpanzees hunt? Considering the benefits and costs of acquiring and consuming vertebrate versus invertebrate prey. Journal of Human Evolution 71: 38-45.

 

 

Machanda, Z.P., Gilby, I.C. & Wrangham, R.W. (2014).  Mutual grooming among adult male chimpanzees: The immediate investment hypothesis. Animal Behaviour 87: 165–174.

 

 

Miller, J.A., Pusey, A.E., Gilby, I.C., Schroepfer-Walker, K., Markham, A.C. & Murray, C. M. (2014).  Competing for space: female chimpanzees are more aggressive inside than outside their core areas. Animal Behaviour 87: 147-152.

 

 

Machanda, Z.P., Gilby, I.C., & Wrangham R.W. (2013).  Male-female association patterns among free-ranging chimpanzees (Pan troglodytes schweinfurthii). International Journal of Primatology 34: 917-938.

 

 

Gilby, I.C., Wilson, M.L., & Pusey, A.E. (2013). Ecology rather than psychology explains co-occurrence of predation and border patrols in male chimpanzees. Animal Behaviour 86: 61-74.

 

 

Gilby, I.C., Brent, L.J.N., Wroblewski, E.E., Rudicell, R.S., Hahn, B.H., Goodall, J. & Pusey, A.E. (2013). Fitness benefits of coalitionary aggression in male chimpanzees. Behavioral Ecology and Sociobiology 67: 373-381.

 

 

Crofoot, M.C. & Gilby, I.C. (2012).  Cheating monkeys undermine group strength in enemy territory. Proceedings of the National Academy of Sciences, USA 109: 501-505.

 

 

Gilby, I.C. (2012). Nonkin cooperation: reciprocity, markets and mutualism. In: Evolution of Primate Societies (Ed. by Mitani, J., Call, J., Kappeler, P., Palombit, R., & Silk, J.). pp 514-530. Chicago, IL: University of Chicago Press.

 

 

Pintea, L., Pusey, A.E., Wilson, M.L., Gilby, I.C., Collins, D.A., Kamenya, S., Goodall, J. (2012). Long-term ecological changes affecting the chimpanzees of Gombe National Park, Tanzania. In: Long Term Changes in Africa’s Rift Valley: impacts on biodiversity and ecosystems (Ed. by Plumptre, A.J.). pp 194-210. New York: Nova Science Publishers

 

 

Lonsdorf, E.V., Murray, C.M., Lonsdorf, E.V., Travis, D.A., Gilby, I.C., Chosy, J., Pusey, A.E., Goodall, J. (2011). A retrospective analysis of factors correlated to chimpanzee (Pan troglodytes schweinfurthii) respiratory health at Gombe National Park. EcoHealth 8:26-35.

 

 

Gilby, I.C., Emery Thompson, M., Ruane, J., Wrangham, R.W. (2010). No evidence of short-term exchange of meat for sex among chimpanzees. Journal of Human Evolution 59: 44-53.

 

 

Gilby, I.C.  & Connor, R.C. (2010). The role of intelligence in group hunting: Are chimpanzees different from other social predators? In: The Mind of the Chimpanzee: Ecological and Experimental Perspectives (Ed. by Lonsdorf, E. V., Ross, S. R. & Matsuzawa, T.). pp 220-233. Chicago, IL: University of Chicago Press.

 

 

Gilby, I.C., Pokempner, A. A., Wrangham, R. W. (2010). A direct comparison of scan and focal sampling methods for measuring wild chimpanzee feeding behaviour. Folia Primatologica 81: 254-264.

 

 

Foster, M.W., Gilby, I.C., Murray, C.M., Johnson, A., Wroblewski, E.E., Pusey, A.E. (2009). Alpha male chimpanzee grooming patterns: implications for dominance ‘style’. American Journal of Primatology 71: 136-144.

 

 

Tennie, C., Gilby, I.C., Mundry, R. (2009). The meat-scrap hypothesis: small quantities of meat may promote cooperative hunting in wild chimpanzees. Behavioral Ecology and Sociobiology 63: 421-431.

 

 

Gilby, I.C. & Wrangham, R.W. (2008). Association patterns among wild chimpanzees (Pan troglodytes schweinfurthii) reflect sex differences in cooperation. Behavioral Ecology and Sociobiology 62: 1831-1842.

 

 

Gilby, I.C., Eberly, L.E., Wrangham, R.W. (2008). Economic profitability of social predation among wild chimpanzees: individual variation promotes cooperation. Animal Behaviour 75: 351-360.

 

 

Crofoot, M.C., Gilby, I.C., Wikelski, M.C., Kays, R.W. (2008). Interaction location outweighs the competitive advantage of numerical superiority in Cebus capucinus intergroup contests. Proceedings of the National Academy of Sciences, USA 105: 577-581.

 

 

Murray C.M., Gilby I.C., Mane S.V., Pusey A.E. (2008). Adult male chimpanzees inherit maternal ranging patterns. Current Biology 18: 20-24.

 

 

Wrangham, R.W., Crofoot M.C., Lundy R., Gilby I.C. (2007). Use of overlap zones in group-living primates: a test of the risk hypothesis. Behaviour 144: 1599-1619.

 

 

Gilby, I.C. & Wrangham, R.W. (2007). Risk-prone hunting by chimpanzees (Pan troglodytes schweinfurthii) increases during periods of high diet quality. Behavioral Ecology and Sociobiology 61: 1771-1779.

 

 

Emery Thompson, M., Kahlenberg, S.M., Gilby, I.C., Wrangham, R.W. (2007). Within-community variation in habitat quality accounts for variance in reproductive success among female chimpanzees at Kibale National Park, Uganda. Animal Behaviour 73: 501-512.

 

 

Gilby, I.C., Eberly, L.E., Pintea, L., Pusey, A.E. (2006). Ecological and social influences on the hunting behaviour of wild chimpanzees, Pan troglodytes schweinfurthii. Animal Behaviour 72: 169-180.

 

 

Gilby, I.C. (2006). Meat sharing among the Gombe chimpanzees: Harassment and reciprocal exchange. Animal Behaviour 71: 953-963.

 

 

Stevens, J.R. & Gilby, I.C. (2004). A conceptual framework for non-kin food sharing: timing and currency of benefits. Animal Behaviour 67: 603-614.