Reproductive success of Bornean orangutan males: scattered in time but clustered in space

van Noordwijk, Maria A; LaBarge, Laura R; Kunz, Julia A; Marzec, Anna M; Spillmann, Brigitte; Ackermann, Corinne; Rianti, Puji; Vogel, Erin R; Atmoko, S Suci Utami; Kruetzen, Michael; van Schaik, Carel P

doi:10.1007/s00265-023-03407-6

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van Noordwijk, M. A., LaBarge, L. R., Kunz, J. A., Marzec, A. M., Spillmann, B., Ackermann, C., Rianti, P., Vogel, E. R., Atmoko, S. S. U., Kruetzen, M., & van Schaik, C. P. (2023). Reproductive success of Bornean orangutan males: scattered in time but clustered in space. Behavioral Ecology and Sociobiology, 77(12), 134. https://doi.org/10.1007/s00265-023-03407-6

Abstract

The social and mating systems of orangutans, one of our closest relatives, remain poorly understood. Orangutans (Pongo spp.) are highly sexually dimorphic and females are philopatric and maintain individual, but overlapping home ranges, whereas males disperse, are non-territorial and wide-ranging, and show bimaturism, with many years between reaching sexual maturity and attaining full secondary sexual characteristics (including cheek pads (flanges) and emitting long calls). We report on 21 assigned paternities, among 35 flanged and 15