, Volume 48, Issue 2, pp 117–121 | Cite as

Female transfer between one-male groups of proboscis monkey (Nasalis larvatus)

  • Tadahiro Murai
  • Maryati Mohamed
  • Henry Bernard
  • Patrick Andau Mahedi
  • Rashid Saburi
  • Seigo Higashi
Original Article


Successful or unsuccessful female transfers were observed seven times during a 32-month field study of proboscis monkeys (Nasalis larvatus) inhabiting a riverine forest along a tributary of the Kinabatangan River, Sabah, Malaysia. In all cases, the females voluntarily left their own groups and immediately joined with another one. When adult females tried to shift to other groups, adult males called them back to their own groups, but appeared to be indifferent to subadult females. When the adult females returned, the males never attacked the females physically, but instead often emitted herding sounds to them. One subadult female was repelled by a resident adult female. When one adult female transferred into a new one-male group, she left her behind son in an all-male group. The number of females often fluctuated in most study groups, with this fluctuation being more prominent among subadult females than adult females. It is likely that female transfer in proboscis monkeys is not a rare occurrence and that it is especially common among sub-adult females.


All-male group Female transfer Nasalis larvatus One-male group Proboscis monkey 



We would like to express our sincere thanks to Dr. K. Watanabe for his valuable advice in preparing this manuscript, and to Dr. M. Mitani for his encouragement and field support. Cordial thanks are also due to staff members of the Kota Kinabatangan Wildlife Department for their help in the fieldwork, and to Ms. T. Murai for her field assistance throughout the study. We also thank anonymous reviewers for their valuable comments on this manuscript.


  1. Agoramoorthy G, Hsu MJ (2004) Occurrence of infanticide among wild proboscis monkeys (Nasalis larvatus) in Sabah, Northern Borneo. Folia Primatol 76:177–179CrossRefGoogle Scholar
  2. Ali R (1981) The ecology and social behaviour of the Agasyamalai bonnet macaque (Macaca radiata diuta). PhD thesis, University of Bristol, Bristol, UKGoogle Scholar
  3. Bauchop P, Martucci RW (1968) Ruminant-like digestion of the langur monkey. Science 161:698–700CrossRefPubMedGoogle Scholar
  4. Bennett EL, Sebastian T (1988) Social organization and ecology of proboscis monkeys (Nasalis larvatus) in mixed coastal forest in Sarawak. Int J Primatol 9:233–256CrossRefGoogle Scholar
  5. Boonratana R (1999) Dispersal in proboscis monkeys (Nasalis larvatus) in the Lower Kinabatangan, Northern Borneo. Trop Biodivers 6:179–187Google Scholar
  6. Boonratana R (2000) Ranging behavior of proboscis monkeys (Nasalis larvatus) in the Lower Kinabatangan, Northern Borneo. Int J Primatol 21:497–518CrossRefGoogle Scholar
  7. Boonratana R (2002) Social organisation of proboscis monkeys (Nasalis larvatus) in the Lower Kinabatangan, Sabah, Malaysia. Malays Nat J 56:57–75Google Scholar
  8. Clutton-Brock TH (1988) Female transfer and inbreeding avoidance in social mammals. Nature 337:70–72CrossRefGoogle Scholar
  9. Crockett CM (1984) Emigration by female red howler monkeys and the case for female competition. In: Small MF (ed) Female primates: studies by women primatologists. Alan R Liss, New York, pp 159–173Google Scholar
  10. Dunbar RIM, Dunbar EP (1975) Social dynamics of gelada baboons. Karger, BaselGoogle Scholar
  11. Lehner PN (1979) Handbook of ethological methods. Garland Press, New York, pp 117–118Google Scholar
  12. Moore J (1984) Female transfer in primates. Int J Primatol 5:537–589CrossRefGoogle Scholar
  13. Murai T (2004) Social behaviors of all-male proboscis monkeys when joined by females. Ecol Res 19:451–454CrossRefGoogle Scholar
  14. Napier JR, Napier PH (1985) The natural history of the primates. MIT Press, CambridgeGoogle Scholar
  15. Oates JF, Davies AG (1994) What are the colobines? In: Davies AG, Oates JF (eds) Colobine monkeys: their ecology, behaviour and evolution. Cambridge University Press, Cambridge, pp 1–9Google Scholar
  16. Pusey AE, Packer C (1987) Dispersal and philopatry. In: Smuts BB, Cheney DL, Seyfarth RM, Struhsaker TT, Wrangham RW (eds) Primate societies. University of Chicago Press, Chicago, pp 250–266Google Scholar
  17. Rajanthan R, Bennett EL (1990) Note on the social behaviour of wild proboscis monkeys (Nasalis larvatus). Malays Nat J 44:35–44Google Scholar
  18. Stammbach E (1987) Desert, forest and montane baboons: multilevel-societies. In: Smuts BB, Cheney DL, Seyfarth RM, Struhsaker TT, Wrangham RW (eds) Primate societies. University of Chicago Press, Chicago, pp 112–120Google Scholar
  19. Stanford CB (1991) The capped langur in Bangladesh: behavioral ecology and reproductive tactics. Contributions to primatology, vol 26. Karger, New YorkGoogle Scholar
  20. Sterck EHM (1997) Determinants of female dispersal in Thomas langurs. Am J Primatol 42:179–198CrossRefPubMedGoogle Scholar
  21. Wrangham RW (1980) An ecological model of female-bonded primate groups. Behaviour 75:262–299CrossRefGoogle Scholar
  22. Yeager CP (1990) Proboscis monkey (Nasalis larvatus) social organization: group structure. Am J Primatol 20:95–106CrossRefGoogle Scholar
  23. Yeager CP (1991) Proboscis monkey (Nasalis larvatus) social organization: intergroup patterns of association. Am J Primatol 23:73–86CrossRefGoogle Scholar
  24. Yeager CP (1995) Does intraspecific variation in social systems explain reported differences in the social structure of the proboscis monkey (Nasalis larvatus)? Primates 36:575–582CrossRefGoogle Scholar

Copyright information

© Japan Monkey Centre and Springer-Verlag 2006

Authors and Affiliations

  • Tadahiro Murai
    • 1
  • Maryati Mohamed
    • 2
  • Henry Bernard
    • 2
  • Patrick Andau Mahedi
    • 3
  • Rashid Saburi
    • 3
  • Seigo Higashi
    • 4
  1. 1.Primate Research InstituteKyoto UniversityAichJapan
  2. 2.Institute for Tropical Biology and ConservationUniversity of Malaysia SabahSabahMalaysia
  3. 3.Sabah Wildlife DepartmentSabahMalaysia
  4. 4.Graduate School of Environmental Earth ScienceHokkaido UniversityHokkaidoJapan

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