International Journal of Primatology

, Volume 25, Issue 6, pp 1313–1330 | Cite as

Social System of a Hybrid Baboon Group (Papio anubis × P. hamadryas)

  • Thore J. Bergman
  • Jacinta C. Beehner
Article

Abstract

We describe the social organization, mating system, and social structure of a group of hybrid baboons (Papio anubis×P. hamadryas) in Ethiopia's Awash National Park. The group contained elements of both hamadryas and anubis societies. Overall, the group was a multimale, multifemale group that lacked cohesion and frequently formed subgroups. Subgroup formation was more strongly associated with predation risk than food availability. Although there were several hamadryas-like one-male units OMUs within the group, there was no evidence of a hamadryas multilevel society. Male and female members of OMUs were phenotypically more hamadryas-like than non-OMU individuals. The group contained substantial variation in the strength of inter- and intrasexual bonds: some females primarily groomed males while other females primarily groomed females, and the patterns were consistent with the OMU substructure. Despite some promiscuous mating, mating was biased towards the hamadryas condition for all group members. Additionally, rates of immigration and emigration were very low, and mean pairwise relatedness within the group is rising. For measures of intersexual bonding, all members of the group were intermediate between anubis and hamadryas individuals in less hybridized groups. The group was phenotypically and behaviorally more intermediate than it was in the 1970s (Sugawara, K. (1988). Primates 29: 429–448.) and the changes may indicate a relatively young and dynamic hybrid zone.

social organization social structure mating baboon hybrid socioecology 

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REFERENCES

  1. Abegglen, J. J. (1984). On Socialization in Hamadryas Baboons: A Field Study, Associated University Presses, London.Google Scholar
  2. Alberts, S. C., and Altmann, J. (1995). Preparation and activation: determinants of age at re-productive maturity in male baboons. Behav.Ecol.Sociobiol. 36: 397–406.Google Scholar
  3. Aldrich-Blake, F. P. G., Dunn, T. K., Dunbar, R. I. M., and Headley, P. M. (1971). Observa-tions on baboons, Papio anubis, in an arid region in Ethiopia. Folia Primatol. 15: 1–35.Google Scholar
  4. Altmann, J. (1974). Observational study of behavior: sampling methods. Behaviour 49: 229–267.Google Scholar
  5. Altmann, J., Alberts, S. C., Haines, S. A., Dubach, J., Muruthi, P., Coote, T., Geffen, E., Cheesman, D. J., Mututua, R. S., Saiyalel, S. N., Wayne, R. K., Lacy, R. C., and Bruford, M. W. (1996). Behavior predicts genetic structure in a wild primate group. Proc.Natl. Acad.Sci. 93: 5797–5801.Google Scholar
  6. Anderson, C. M. (1986). Predation and primate evolution. Primates 27: 15–39.Google Scholar
  7. Bachmann, C., and Kummer, C. (1980). Male assessment of female choice in hamadryas ba-boons. Behav.Ecol.Sociobiol. 6: 315–321.Google Scholar
  8. Barton, N. H., and Hewitt, G. M. (1985). Analysis of hybrid zones. Ann.Rev.Ecol.Syst. 16:113–148.Google Scholar
  9. Beehner, J. (2003). Female Behavior and Reproductive Success in a Hybrid Baboon Group (Papio hamadryas hamadryas ×Papio hamadryas anubis), PhD Thesis, Washington University, St. Louis, MO.Google Scholar
  10. Beehner, J. C., and Bergman, T. J. (in press). Social behavior among female hybrid baboons in the Awash National Park of Ethiopia. In Swedell, L., and Leigh, S. (eds.), Reproductive strategies in baboons: Behavioral, ecological, and life history perspectives, Kluwer Academic, Norwell, MA.Google Scholar
  11. Bercovitch, F. B. (1995). Female cooperation, consortship maintenance, and male mating suc-cess in savanna baboons. Anim.Behav. 50: 137–149.Google Scholar
  12. Bergman, T. J. (2000). Mating Behavior and Reproductive Success of Hybrid Male Baboons (Papio hamadryas hamadryas ×Papio hamadryas anubis), PhD Thesis, Washington University, St. Louis, MO.Google Scholar
  13. Bergman, T. J. (in press). Hybrid baboons and the origins of the hamadryas male mating strategy. In Swedell, L., and Leigh, S. (eds.), Reproductive strategies in baboons: Behavioral, ecological, and life history perspectives, Kluwer Academic, Norwell, MA.Google Scholar
  14. Bergman, T. J., and Beehner, J. C. (2003). Hybrid zones and sexual selection: Insights from the Awash baboon hybrid zone (Papio hamadryas anubis ×P.h.hamadryas). In Jones, C. (ed.), Sexual Selection and Primates: New Insights and Directions, American Society of Primatologists, Norman, OK, pp. 500–537.Google Scholar
  15. Beyene, S. (1998). The Role of Female Mating Behavior in Hybridization Between Anubis and Hamadryas Baboons in Awash, Ethiopia, PhD Thesis, Washington University, St. Louis, MO.Google Scholar
  16. Brett, F., Turner, T., Jolly, C. J., and Cauble, R. (1982). Trapping baboons and vervet monkeys from wild, free-ranging populations. J.Wildl.Manag. 46: 164–174.Google Scholar
  17. Colmenares, F. (1992). Clans and harems in a colony of hamadryas and hybrid baboons: Male kinship, familiarity and the formation of brother-teams. Behaviour 121: 61–94.Google Scholar
  18. Cowlishaw, G. (1997a). Refuge use and predation risk in a desert baboon population. Anim. Behav. 54: 241–253.Google Scholar
  19. Cowlishaw, G. (1997b). Trade-offs between foraging and predation risk determine habitat use in a desert baboon population. Anim.Behav. 53: 667–686.Google Scholar
  20. DeVore, I., and Hall, K. R. L. (1965). Baboon ecology. In DeVore, I. (ed.), Primate Behavior: Field Studies of Monkeys and Apes, Holt, Rinehart, and Winston, New York, pp. 20–52.Google Scholar
  21. Dunbar, R. I. M. (1988). Primate Social Systems, Cornell University Press, New York.Google Scholar
  22. Dunbar, R. I. M. (1996). Determinants of group size in primates: A general models. Proc.Br. Acad. 88: 33–57.Google Scholar
  23. Dunbar, R. I. M., Hannah-Stewart, L., and Dunbar, P. (2002). Forage quality and the costs of lactation for female gelada baboons. Anim.Behav. 64: 801–805.Google Scholar
  24. Girman, D. J., Mills, M. G. L., Geffen, E., and Wayne, R. K. (1997). A molecular-genetic analysis of social structure, dispersal, and interpack relationships of the African wild dog (Lycaon pictus). Behav.Ecol.Sociobiol. 40: 187–198.Google Scholar
  25. Kappeler, P. M., and van Schaik, C. P. (2002). Evolution of primate social systems. Int.J. Primatol. 23: 707–740.Google Scholar
  26. Key, K. (1968). The concept of stasipatric speciation. Syst.Zool. 17: 14–22.Google Scholar
  27. Kummer, H. (1968a). Social Organization of Hamadryas Baboons: A Field Study, University of Chicago Press, Chicago.Google Scholar
  28. Kummer, H. (1968b). Two variations in the social organization of baboons. In Jay, P. C. (ed.), Primates: Studies in Adaptation and Variability, Holt, Rinehart, and Winston, New York, pp. 293–312.Google Scholar
  29. Kummer, H. (1984). From laboratory to desert and back: A social system of hamadryas ba-boons. Anim.Behav. 32: 965–971.Google Scholar
  30. Kummer, H., Banaja, A. A., Abo-Khatwa, A. N., and Ghandour, A. M. (1985). Differences in the social behavior between Ethiopian and Arabian hamadrayas baboons. Folia Primatol. 45: 1–8.Google Scholar
  31. Kummer, H., G¨otz, W., and Angst, W. (1974). Triadic differentiation: An inhibitory process protecting pair bonds in baboons. Behaviour 49: 62–87.Google Scholar
  32. Moore, J. (1978). Dominance relations among free-ranging female baboons in Gombe National Park, Tanzana. In Chivers, D. J., and Herbert, J. (eds.), Recent Advances in Primatology, Academic, London, pp. 67–70.Google Scholar
  33. Moore, W. S. (1977). An evaluation of narrow hybrid zones in vertebrates. Q.Rev.Biol. 52:263–278.Google Scholar
  34. Nagel, U. (1973). A comparison of anubis baboons, hamadryas baboons and their hybrids at a species border in Ethiopia. Folia Primatol. 19: 104–165.Google Scholar
  35. Newman, T. K. (1997). Mitochondrial DNA Analysis of Intraspecific Hybridization in Pa-pio hamadryas anubis, P.h.hamadryas and Their Hybrids in the Awash National Park, Ethiopia, PhD Thesis, New York University, New York.Google Scholar
  36. No¨e, R. (1986). Lasting alliances among adult male savannah baboons. In Else, J. G., and Lee, P. C. (eds.), Primate Ontogeny, Cognition, and Social Behaviour, Cambridge University Press, Cambridge, pp. 381–392.Google Scholar
  37. Nystrom PDA (1992). Mating Success of Hamadryas, Anubis and Hybrid Male Baboons in a “Mixed” Social Group in the Awash National Park, Ethiopia, PhD Thesis, Washington University, St. Louis, MO.Google Scholar
  38. Packer, C. (1979a). Inter-troop transfer and inbreeding avoidance in Papio anubis. Anim.Behav.27: 1–36.Google Scholar
  39. Packer, C. (1979b). Male dominance and reproductive activity in Papio anubis. Anim.Behav. 27: 37–45.Google Scholar
  40. Phillips-Conroy, J. E., and Jolly, C. J. (1986). Changes in the structure of the baboon hybrid zone in the Awash National Park, Ethiopia. Am.J.Phys.Anthrop. 71: 337–350.Google Scholar
  41. Phillips-Conroy, J. E., and Jolly, C. J. (1988). Dental eruption schedules of wild and captive baboons. Am.J.Primatol. 15: 17–29.Google Scholar
  42. Phillips-Conroy, J. E., and Jolly, C. J. (2004). Male dispersal and philopatry in the Awash baboon hybrid zone. Primate Rep. 68: 27–52.Google Scholar
  43. Phillips-Conroy, J. E., Jolly, C. J., and Brett, F. L. (1991). Characteristics of hamadryas-like male baboons living in anubis baboon troops in the Awash hybrid zone, Ethiopia. Am.J. Phys.Anthrop. 86: 353–368.Google Scholar
  44. Phillips-Conroy, J., E., Jolly, C. J., Nystrom, P., and Hemmalin, H. A. (1992). Migrations of male hamadryas baboons into anubis groups in the Awash National Park, Ethiopia. Int.J. Primatol. 13: 455–476.Google Scholar
  45. Pusey, A. E., and Packer, C. (1987). Dispersal and philopatry. In Smuts, B. B., Cheney, D. L., Seyfarth, R. M., Wrangham, R. W., and Struhsaker, T. T. (eds.), Primate Societies, University of Chicago Press, Chicago, pp. 250–266.Google Scholar
  46. Queller, D. C., and Goodnight, K. F. (1989). Estimating relatedness using genetic-markers. Evolution 43: 258–275.Google Scholar
  47. Ransom, T. W. (1981). Beach Troop of the Gombe, Bucknell University Press, London.Google Scholar
  48. Sigg, H., Stolba, A., Abegglen, J. J., and Dasser, V. (1982). Life history of hamadryas ba-boons: Physical development, infant mortality, reproductive parameters, and family rela-tionships. Primates 23: 473–487.Google Scholar
  49. Smuts, B. B. (1985). Sex and Friendship in Baboons, Aldine, New York.Google Scholar
  50. Smuts, B. B., and Watanabe, J. M. (1990). Social relationships and ritualized greetings in adult male olive baboons (Papio anubis). Int.J.Primatol. 11: 147–172.Google Scholar
  51. Strum, S. C. (1982). Agonistic dominance in male baboons: An alternative view. Int.J.Primatol. 3: 175–202.Google Scholar
  52. Sugawara, K. (1979). Sociological study of a wild group of hybrid baboons between Papio anubis and Papio hamadryas in the Awash Valley, Ethiopia. Primates 20: 21–56.Google Scholar
  53. Sugawara, K. (1982). Sociological comparison between two wild groups of anubis-hamadryas hybrid baboons. Afr.Study Monogr. 2: 73–131.Google Scholar
  54. Sugawara, K. (1988). Ethological study of the social behavior of hybrid baboons between Papio anubis and P.hamadryas in free-ranging groups. Primates 29: 429–448.Google Scholar
  55. Swedell, L. (2000). Social Behavior and Reproductive Strategies of Female Hamadryas Baboons, Papio hamadryas hamadryas, in Ethiopia, PhD Thesis, Columbia University, New York.Google Scholar
  56. Swedell, L. (2002). Affiliation among females in wild hamadryas baboons (Papio hamadryas hamadryas). Int.J.Primatol. 23: 1205–1226.Google Scholar
  57. Woolley-Barker, T. (1999). Social Organization and Genectic Structure in a Baboon Hybrid Zone, PhD Thesis, New York University, New York.Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2004

Authors and Affiliations

  • Thore J. Bergman
    • 1
  • Jacinta C. Beehner
    • 2
  1. 1.Biology DepartmentWashington UniversitySt. LouisMissouri
  2. 2.Anthropology DepartmentWashington UniversitySt. LouisMissouri

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