Intergroup variation in robbing and bartering by long-tailed macaques at Uluwatu Temple (Bali, Indonesia)

Primates; Journal of Primatology
Fany BrotcorneJean-Baptiste Leca

Abstract

Robbing and bartering (RB) is a behavioral practice anecdotally reported in free-ranging commensal macaques. It usually occurs in two steps: after taking inedible objects (e.g., glasses) from humans, the macaques appear to use them as tokens, returning them to humans in exchange for food. While extensively studied in captivity, our research is the first to investigate the object/food exchange between humans and primates in a natural setting. During a 4-month study in 2010, we used both focal and event sampling to record 201 RB events in a population of long-tailed macaques (Macaca fascicularis), including four neighboring groups ranging freely around Uluwatu Temple, Bali (Indonesia). In each group, we documented the RB frequency, prevalence and outcome, and tested the underpinning anthropogenic and demographic determinants. In line with the environmental opportunity hypothesis, we found a positive qualitative relation at the group level between time spent in tourist zones and RB frequency or prevalence. For two of the four groups, RB events were significantly more frequent when humans were more present in the environment. We also found qualitative partial support for the male-biased sex ratio hypothesis [i.e., RB was more frequ...Continue Reading

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Citations

Oct 29, 2018·American Journal of Physical Anthropology·Stefano S K KaburuBrenda McCowan
Nov 14, 2019·Biology Letters·Stephan P Kaufhold, Edwin J C van Leeuwen
Oct 22, 2020·Primates; Journal of Primatology·Tetsuro Matsuzawa
Dec 25, 2019·Neuroscience and Biobehavioral Reviews·Elsa AddessiJean-Baptiste Leca
Jan 12, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Sacha Bourgeois-GirondeThomas Boraud
Jan 12, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jean-Baptiste LecaI Nengah Wandia
Feb 2, 2021·Evolutionary Applications·Christopher J SchellMaureen H Murray
Jan 12, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Frans B M de Waal
Jan 12, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Michael J Beran, Audrey E Parrish
Jan 12, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Sarah F Brosnan
Jan 12, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·E QuintieroS Bourgeois-Gironde
Jun 3, 2021·Animals : an Open Access Journal From MDPI·Qingming CuiHonggang Xu

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