Intra-Community Coalitionary Lethal Attack of an Adult Male Southern Muriqui (Brachyteles arachnoides)

Intra-Community Coalitionary Lethal Attack of an Adult Male Southern Muriqui (Brachyteles arachnoides)

Author Talebi, M. G. Autor UNIFESP Google Scholar
Beltrao-Mendes, R. Google Scholar
Lee, P. C. Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Promuriqui Assoc Behav Biol & Conservat
Univ Fed Sergipe
Univ Stirling
Abstract We report on the first evidence of intra-community coalitionary lethal aggression in muriquis (Brachyteles). the event occurred in southern muriquis (Brachyteles arachnoides) during a long-term study (> 15 years) of two social groups inhabiting mostly pristine Atlantic forest habitat in the Parque Estadual Carlos Botelho, southern São Paulo State, Brazil. the attack took place deep in the core area of the Group Caete home range. Tense agonistic behaviors and vocalizations preceded the lethal coalitionary attack, and the tension increased over a 36-48 hr period. One adult; female and two unidentified individuals also took part in a coalition led by six adult males. the members of the coalition collectively approached, embraced, immobilized and repeatedly bit the entire body of an adult male, resulting in severe bleeding injuries and the victim's death in less than 1 hr after the attack commenced. Combined ecological, behavioral and spatial data related to the event indicate that this was an intra-community attack and suggest social tensions related to mating competition. as the proximate trigger of the coalitionary killing. the attack resembled those reported for chimpanzees, with clear numeric superiority and a low risk of injury to aggressors, resulting in the death of a lone conspecific victim. This observation (n = 1) is suggestive of a capacity for escalated aggression in muriquis and reinforces arguments for the potential adaptive significance of intra-community aggression in male philopatric societies, as reported for spider monkeys and chimpanzees. These characteristics challenge the view of the muriquis as a peaceful primate and support the general hypothesis that imbalances of power contribute to intra-specific killing in primates, such as chimpanzees and humans. Am. J. Primatol. 71:860-867, 2009. (C) 2009 Wiley-Liss, Inc.
Keywords aggression
male-male competition
B. arachnoides
Language English
Sponsor Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Conserva do International (Brazil)
ATBC Clifford Evans
Margot Marsh Biodiversity Foundation
Primate Action Fund of Conservation International
MetroParks Zoo Cleveland
Idea Wild
Conservation Food and Health Foundation (USA) Manfred Hermsen Stiftung Foundation (Germany)
Fauna Flora International
DEFRA and Bromley Trust (UK)
Grant number CNPq: 20025699-8
Date 2009-10-01
Published in American Journal of Primatology. Hoboken: Wiley-liss, v. 71, n. 10, p. 860-867, 2009.
ISSN 0275-2565 (Sherpa/Romeo, impact factor)
Publisher Wiley-Blackwell
Extent 860-867
Access rights Closed access
Type Article
Web of Science ID WOS:000270044400006

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