Home range establishment and the mechanisms of philopatry among female Bornean orangutans (Pongo pygmaeus wurmbii) at Tuanan

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2020
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Willems, Erik P.
Utami-Atmoko, Sri Suci
Saputra, Fajar
van Schaik, Carel P.
van Noordwijk, Maria A.
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Behavioral Ecology and Sociobiology. Springer. 2020, 74, 42. ISSN 0340-5443. eISSN 1432-0762. Available under: doi: 10.1007/s00265-020-2818-1
Zusammenfassung

Female orangutans exhibit natal philopatry, living in stable home ranges that overlap with those of their maternal relatives. Using data collected from 2003 to 2017 at Tuanan in Central Kalimantan, Indonesia, we take a longitudinal approach to better understand the mechanisms of female philopatry and the factors that influence the home range establishment process of young female orangutans (Pongo pygmaeus wurmbii). Data on movement and sociality were collected during nest-to-nest focal follows of individual orangutans; four young nulli/primiparous females, their three multiparous mothers, and seven other unrelated adult females living in the same area. Our results show that a young female goes through an ‘exploration phase’, beginning when she is an independent immature and lasting through her adolescence, characterized by an increase in home range size and distance travelled each day. This exploration is facilitated by high resource availability and association with adult males. A young female maintains a high degree of overlap with her natal range but gradually decrease the degree of overlap with her mother’s concurrent range. By the time she is a sexually active adolescent, a young female and her mother share as much overlap as a young female does with other related adult females, although she continues to associate more with her mother than with them, even after the birth of her first offspring. Our findings indicate that the high habitat productivity and high orangutan population density of Tuanan lead to a high degree of life-time site fidelity and overlap among maternal kin.

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Fachgebiet (DDC)
570 Biowissenschaften, Biologie
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Female philopatry, Day journey length, Home range, Range overlap, Matriline, Site fidelity
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ISO 690ASHBURY, Alison M., Erik P. WILLEMS, Sri Suci UTAMI-ATMOKO, Fajar SAPUTRA, Carel P. VAN SCHAIK, Maria A. VAN NOORDWIJK, 2020. Home range establishment and the mechanisms of philopatry among female Bornean orangutans (Pongo pygmaeus wurmbii) at Tuanan. In: Behavioral Ecology and Sociobiology. Springer. 2020, 74, 42. ISSN 0340-5443. eISSN 1432-0762. Available under: doi: 10.1007/s00265-020-2818-1
BibTex
@article{Ashbury2020range-56012,
  year={2020},
  doi={10.1007/s00265-020-2818-1},
  title={Home range establishment and the mechanisms of philopatry among female Bornean orangutans (Pongo pygmaeus wurmbii) at Tuanan},
  volume={74},
  issn={0340-5443},
  journal={Behavioral Ecology and Sociobiology},
  author={Ashbury, Alison M. and Willems, Erik P. and Utami-Atmoko, Sri Suci and Saputra, Fajar and van Schaik, Carel P. and van Noordwijk, Maria A.},
  note={Article Number: 42}
}
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