Male replacement and stability of territorial boundary in a group of agile gibbons (Hylobates agilis agilis) in West Sumatra, Indonesia

Hiroki Koda, Chisako Oyakawa, Santi Nurulkamilah, Rizaldi, Hideki Sugiura, Amsir Bakar, Nobuo Masataka

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    We report membership change in a group of wild agile gibbons, Hylobates agilis agilis, in West Sumatra, Indonesia. During 6-month observational periods, we focused on a particular unit of individuals known as the B group. We confirmed that the group consisted of five individuals: one adult female, one adult male, one subadult male, one subadult female, and one infant male. During our observations, the resident adult male and the two subadult individuals dispersed or disappeared, and a new adult male took over the group. We examined the effects of the male replacement on the territorial boundary, using the auditory census technique. The boundary was stable. We also documented the succession of the home range. Our results indicate a flexible social structure in this species and contribute some useful data to an ongoing debate on their social dynamics.

    Original languageEnglish
    Pages (from-to)327-332
    Number of pages6
    JournalPrimates
    Volume53
    Issue number4
    DOIs
    Publication statusPublished - 2012 Oct

    Keywords

    • Auditory census
    • Home range estimation
    • Hylobates agilis agilis
    • Male replacements
    • Pair formation

    ASJC Scopus subject areas

    • Animal Science and Zoology

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