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  The dark side of the red ape: male-mediated lethal female competition in Bornean orangutans

Marzec, A. M., Kunz, J. A., Falkner, S., Atmoko, S. S. U., Alavi, S. E., Modawer, A. M., et al. (2016). The dark side of the red ape: male-mediated lethal female competition in Bornean orangutans. Behavioral Ecology and Sociobiology, 70(4), 459-466. doi:10.1007/s00265-015-2053-3.

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 Creators:
Marzec, Anna M, Author
Kunz, Julia A, Author
Falkner, Sonja, Author
Atmoko, Sri Suci Utami, Author
Alavi, Shauhin E.1, Author              
Modawer, Alysse M, Author
Vogel, Erin R, Author
Schuppli, Caroline1, Author              
van Schaik, Carel P., Author
van Noordwijk, Maria A, Author
Affiliations:
1ou_persistent22, ou_persistent22              

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Free keywords: Orangutan Lethal aggression Coalitionary attack Female-female competition Male support
 Abstract: Female Bornean orangutans (Pongo pygmaeus wurmbii) are mainly solitary and philopatric, leading to adult female relatives sharing adjacent and overlapping home ranges. Females tend to be intolerant of unrelated females, with whom they also may have overlapping home ranges. However, fights that lead to injuries are extremely rare and lethal aggression had never been observed. Here, we report the first case of lethal female-female aggression during over 26,000 h of focal data collected on adult females at Tuanan, Central Kalimantan: A young female, who had recently lost her infant, attacked an old resident female. The interaction’s unique feature was that the attacking female was supported by an unflanged male, who had been in consort with her during the week preceding the attack and was responsible for the lethal injuries to the victim. The victim received protection from a flanged male who was probably attracted to the noise generated by the fight. We conclude that even in a species in which coercion is frequently observed in male-female interactions, female leverage over males can coax males into providing services, such as coalitionary support.

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 Dates: 2016-02-03
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1007/s00265-015-2053-3
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Title: Behavioral Ecology and Sociobiology
Source Genre: Journal
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Publ. Info: Heidelberg : Springer-Verlag
Pages: - Volume / Issue: 70 (4) Sequence Number: - Start / End Page: 459 - 466 Identifier: ISSN: 0340-5443
CoNE: https://pure.mpg.de/cone/journals/resource/954925518617