Intergroup Encounters of Chimpanzees (Pan troglodytes) from the Female Perspective

Chie Hashimoto, Mina Isaji, Keiko Mouri & Hiroyuki Takemoto

Introductionc

Intergroup encounters in primates range from peaceful to violent. For example, although intergroup encounters in chimpanzees occasionally involve lethal attacks, many peaceful encounters involving females have been reported for western chimpanzees (Pan troglodytes verus) in Tai (Boesch et al.2008). For eastern chimpanzees (P. t. schweinfurthii), however, there is only one detailed report of a peaceful encounter involving females from Mahale (Kawanaka 1982). The dearth in reports on peaceful encounters might be because most reports have focused on infanticide and severe or fatal aggression with males as aggressors or victims, whereas calm and peaceful encounters of parties of one or more females with their offspring are less likely to be reported. This study aims to fill some of these gaps by providing new information on eastern chimpanzees in Kalinzu, as well as a compilation of reported studies on intergroup encounters involving females of both eastern and western chimpanzees.

Bibliographic information

International Journal of Primatology
https://doi.org/10.1007/s10764-020-00145-8

2020/04/06 Primate Research Institute