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  • Cited by 2
  • Print publication year: 2019
  • Online publication date: November 2019

18 - Rank changes in female chimpanzees in Taï National Park


The social life of female chimpanzees (Pan troglodytes) differs between subspecies, with females in East African field sites often described as avoiding association to avoid competition, while females in Taï have been shown to be more gregarious, spending most of their time in close contact with each other, probably to avoid predation. This close association leads to increased levels of direct competition for resources, possibly increasing the benefit of having a higher dominance rank and challenging dominant group members. Female chimpanzees in Gombe have been shown to queue for rank rather than challenge others. Here, we show that female dyads in Taï do change their dominance rank at times, with at least six clear rank changes recorded in the Taï North and South communities. We discuss life events that could facilitate rank challenges. The increased flexibility in the female dominance hierarchy potentially adds a level of complexity not seen in East African chimpanzees.

Albers, P. C. H. & de Vries, H. (2001). Elo-rating as a tool in the sequential estimation of dominance strengths. Animal Behaviour, 61, 489495.
Altmann, J. (1974). Observational study of behavior: Sampling methods. Behaviour, 49, 227267.
Boesch, C. (1991). The effects of leopard predation on grouping patterns in forest chimpanzees. Behaviour, 117, 220241.
Boesch, C. & Boesch, H. (1989). Hunting behavior of wild chimpanzees in the Tai National Park. American Journal of Physical Anthropology, 78, 547573.
Boesch, C. & Boesch-Achermann, H. (2000). The Chimpanzees of the Taï Forest: Behavioural Ecology and Evolution. Oxford: Oxford University Press.
Bygott, J. D. (1979). Agonistic behaviour, dominance and social structure in wild chimpanzees of the Gombe National Park. In Hamburg, D. A. & McCown, E. R. (eds.), The Great Apes (pp. 405427). Menlo Park: Benjamin/Cummings.
Clutton-Brock, T. H. & Huchard, E. (2013). Social competition and selection in males and females. Philosophical Transactions of the Royal Society B, 368(1631), 2013007420130074.
de Waal, F. B. M. (1982). Chimpanzee Politics: Power and Sex Among Apes. Baltimore: John Hopkins University Press.
Douglas, P. H., Ngomo Ngonga, A. C. & Hohmann, G. (2017). A novel approach for dominance assessment in gregarious species: ADAGIO. Animal Behaviour, 123, 2132.
Foerster, S., Franz, M., Murray, C. M., Gilby, I. C., Feldblum, J. T., Walker, K. K., et al. (2016). Chimpanzee females queue but males compete for social status. Scientific Reports, 6, 111.
Foerster, S., McLellan, K., Schroepfer-Walker, K., Murray, C. M., Krupenye, C., Gilby, I. C., et al. (2015). Social bonds in the dispersing sex: Partner preferences among adult female chimpanzees. Animal Behaviour, 105, 139152.
Gomes, C. M. & Boesch, C. (2009). Wild chimpanzees exchange meat for sex on a long-term basis. PLoS ONE, 4(4), e5116.
Gomes, C. M. & Boesch, C. (2011). Reciprocity and trades in wild West African chimpanzees. Behavioral Ecology and Sociobiology, 65, 21832196.–1227–x
Gomes, C. M., Mundry, R. & Boesch, C. (2009). Long-term reciprocation of grooming in wild West African chimpanzees. Proceedings of the Royal Society B, 276(1657), 699706.
Isbell, L. A. (1991). Contest and scramble competition: Patterns of female aggression and ranging behavior among primates. Behavioral Ecology, 2, 143155.
Kaufmann, J. H. (1983). On the definitions and functions of dominance and territoriality. Biological Reviews, 58, 120.
Langergraber, K. E., Mitani, J. & Vigilant, L. (2009). Kinship and social bonds in female chimpanzees (Pan troglodytes). American Journal of Primatology, 71, 840851.
Laporte, M. N. C. & Zuberbühler, K. (2010). Vocal greeting behaviour in wild chimpanzee females. Animal Behaviour, 80, 467473.
Lehmann, J. & Boesch, C. (2005). Bisexually bonded ranging in chimpanzees (Pan troglodytes verus). Behavioral Ecology and Sociobiology, 57, 525535.–0891–5
Lehmann, J. & Boesch, C. (2009). Sociality of the dispersing sex: The nature of social bonds in West African female chimpanzees, Pan troglodytes. Animal Behaviour, 77, 377387.
Majolo, B., Lehmann, J., de Bortoli Vizioli, A. & Schino, G. (2012). Fitness-related benefits of dominance in primates. American Journal of Physical Anthropology, 147, 652660.
Mielke, A., Preis, A., Samuni, L., Gogarten, J. F., Wittig, R. M. & Crockford, C. (2018). Flexible decision-making in grooming partner choice in sooty mangabeys and chimpanzees. Royal Society Open Science, 5, 172143.
Mielke, A., Samuni, L., Preis, A., Gogarten, J. F., Crockford, C. & Wittig, R. M. (2017). Bystanders intervene to impede grooming in Western chimpanzees and sooty mangabeys. Royal Society Open Science, 4, 171296.
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(C), 147152.
Murray, C. M., Eberly, L. E. & Pusey, A. E. (2006). Foraging strategies as a function of season and rank among wild female chimpanzees (Pan troglodytes). Behavioral Ecology, 17, 10201028.
Murray, C. M., Mane, S. V. & Pusey, A. E. (2007). Dominance rank influences female space use in wild chimpanzees, Pan troglodytes: Towards an ideal despotic distribution. Animal Behaviour, 74, 17951804.
Neumann, C., Duboscq, J., Dubuc, C., Ginting, A., Irwan, A. M., Agil, M., et al. (2011). Assessing dominance hierarchies: Validation and advantages of progressive evaluation with Elo-rating. Animal Behaviour, 82, 911921.
Newton-Fisher, N. E. (2017). Modeling social dominance: Elo-ratings, prior history, and the intensity of aggression. International Journal of Primatology, 38, 427447.–9952–2
Pusey, A. E. & Schroepfer-Walker, K. (2013). Female competition in chimpanzees. Philosophical Transactions of the Royal Society B, 368(1631), 2013007720130077.
Pusey, A. E., Williams, J. & Goodall, J. (1997). The influence of dominance rank on the reproductive success of female chimpanzees. Science, 277(5327), 828831.
R Core Team. (2017). R: A Language and Environment for Statistical Computing. Vienna: R Foundation for Statistical Computing.
Riedel, J., Franz, M. & Boesch, C. (2011). How feeding competition determines female chimpanzee gregariousness and ranging in the Taï National Park, Côte d’Ivoire. American Journal of Primatology, 73, 305313.
Samuni, L., Preis, A., Mundry, R., Deschner, T., Crockford, C. & Wittig, R .M. (2017). Oxytocin reactivity during intergroup conflict in wild chimpanzees. Proceedings of the National Academy of Sciences of the United States of America, 114, 268273. of the National Academy of Sciences of the United States of America.1616812114
Sterck, E. H. M., Watts, D. P. & van Schaik, C. P. (1997). The evolution of female social relationships in nonhuman primates. Behavioral Ecology and Sociobiology, 41, 291309.
Surbeck, M., Girard-Buttoz, C., Boesch, C., Crockford, C., Fruth, B., Hohmann, G., et al. (2017). Sex-specific association patterns in bonobos and chimpanzees reflect species differences in cooperation. Royal Society Open Science, 4(5), 120.
Wakefield, M. L. (2008). Grouping patterns and competition among female Pan troglodytes schweinfurthii at Ngogo, Kibale National Park, Uganda. International Journal of Primatology, 29, 907929.–9280–7
Williams, J. M., Pusey, A. E., Carlis, J. V., Farm, B. P. & Goodall, J. (2002). Female competition and male territorial behaviour influence female chimpanzees’ ranging patterns. Animal Behaviour, 63, 347360.
Wittig, R. M. & Boesch, C. (2003). Food competition and linear dominance hierarchy among female chimpanzees of the Tai National Park. International Journal of Primatology, 24, 847867.
Wittig, R. M. & Boesch, C. (2010). Receiving post-conflict affiliation from the enemy’s friend reconciles former opponents. PLoS ONE, 5(11), e13995.
Wittiger, L. & Boesch, C. (2013). Female gregariousness in Western Chimpanzees (Pan troglodytes verus) is influenced by resource aggregation and the number of females in estrus. Behavioral Ecology and Sociobiology, 67, 10971111.–1534–5
Wrangham, R. W. & Smuts, B. B. (1980). Sex differences in the behavioural ecology of chimpanzees in the Gombe National Park, Tanzania. Journal of Reproduction and Fertility, 28, 1331.