BOUNDARY PATROLS AND INTERGROUP ENCOUNTERS IN WILD CHIMPANZEES

By David P Watts, John C. Mitani. 2001

354 citations recorded by the source corpus.

Subfields: Developmental Biology, Ecology, Evolution, Behavior and Systematics, Social Psychology

View Paper: https://www.semanticscholar.org/paper/39a65b8bb7e2fb9e7bb937b423245b0f708290ae

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Citations in the corpus

Correlates of territorial boundary patrol behaviour in wild chimpanzees (2005, background): “Patrols include 8–13 individuals on average and are primarily a male activity, with the extent of female participation varying across sites (Goodall 1986; Boesch & Boesch-Achermann 2000; Watts & Mitani 2001).”
Ecological and social factors affect the occurrence and outcomes of intergroup encounters in chimpanzees (2012, positive): “Following Watts & Mitani (2001), we predicted that males with higher dominance rank, and thus higher probability of siring offspring (Wroblewski et al. 2009), would have a stronger motivation for defending the territory from foreign males.”
Human Culture in Evolutionary Perspective (2010, background): “Chimpanzees in particular have violent, sometimes deadly, encounters with their neighbors, and indeed males often go on so-called border patrol to check for any foreigners that might be encroaching on their territory (Watts & Mitani, 2001 ).”
Factors affecting individual participation in group-level aggression among non-human primates (2007, neutral): “Similarly, it is the quality of a social relationship that seems to influence male chimpanzee willingness to invest in dangerous patrols: Watts & Mitani (2001) report that males are more likely to join a boundary patrol if it contains males with whom they frequently groom and form intra-group…”
Chimpanzees (Pan troglodytes) modify grouping and vocal behaviour in response to location-specific risk (2007, neutral): “Chimpanzees attend closely to pant-hoots and other calls from foreign chimpanzees (Goodall, 1986; Watts & Mitani, 2001).”
The evolutionary anthropology of war (2017, background): “However, individuals that stand to benefit most provide the most effort: males with higher mating success (and thus more offspring to protect and feed) participate in boundary patrols more frequently (Watts and Mitani, 2001), and higher-ranking males travel further into potentially dangerous border ”
Comparative Feeding Ecology of Two Communities of Chimpanzees (Pan troglodytes) in Kibale National Park, Uganda (2011, background): “Researchers have continuously observed the community since then (Mitani and Watts 1999, 2005; Watts 1998; Watts and Mitani 2001; Watts et al. 2006).”
Social influences on ranging patterns among chimpanzees (Pan troglodytes verus) in the Taï National Park, Côte d'Ivoire (2003, methodology): “Values are mainly estimates and taken from Goodall (1986) for Gombe; Chapman and Wrangham (1993) for Kibale; Nishida (1979) for Mahale 1974, Hasegawa and Hiraiwa-Hasegawa (1983) for Mahale 1982, and Watts and Mitani (2001) for Ngogo.”
INTERGROUP RELATIONS IN CHIMPANZEES (2003, background): “At both Ngogo and Ta¨ı, parties containing many males were more likely to approach intruders (Boesch & Boesch-Achermann 2000, Watts & Mitani 2001).”
Coalitions in theory and reality: a review of pertinent variables and processes (2015, background): “Group-wide coalitions can be very large (e.g. average size in 115 chimpanzees: 13, Watts & Mitani, 2001; hyenas: 14, Smith et al., 2010; human band and tribal level 116 raiding parties range from 10 - 100, Walker & Bailey, 2013; Mathew & Boyd, 2011), in contrast to 117 within-group coalitions,…”
Engineering cooperation in chimpanzees: tolerance constraints on cooperation (2006, background): “Patrolling chimpanzees will also occasionally enter the territory of a neighbouring group and coordinate attacks on its members that can be lethal (Goodall et al. 1979; Wrangham 1999; Boesch & BoeschAchermann 2000; Watts & Mitani 2001; Wilson et al. 2001).”
Demographic and social constraints on male chimpanzee behaviour (2002, neutral): “Male chimpanzees cooperate to compete with conspecifics both within and between communities (Goodall et al. 1979; Nishida 1983; Nishida et al. 1985; Morin et al. 1994; Nishida & Hosaka 1996; Watts & Mitani 2001).”
Evolution and development of boys’ social behavior (2003, background): “One of our closest relatives, the chimpanzee (Pan troglodytes), also engages in male–male coalitional competition (de Waal, 1982; Goodall, 1986; Mitani & Watts, 2001; Watts & Mitani, 2001).”
The ontogeny of human prosociality: behavioral experiments with children aged 3 to 8 (2012, background): “Many studies have found that chimpanzees engage in cooperative behavior such as patrolling territorial boundaries and attacking neighboring groups (Watts & Mitani, 2001), hunting small prey collaboratively (Boesch & Boesch, 1989) and sharing meat and other foods (Nishida & Turner, 1996; Mitani &…”
Why do male chimpanzees defend a group range (2004, background): “…opposing groups, and violent and sometimes lethal aggression if a large group from one social group (termed community) encounters single or small parties of individuals from another (Goodall et al. 1979; Goodall 1986; Manson & Wrangham 1991; Boesch & Boesch-Achermann 2000; Watts & Mitani 2001).”
Dear enemies or nasty neighbors? Causes and consequences of variation in the responses of group-living species to territorial intrusions (2018, background): “…U niversity of Bristol Library user on 12 Septem ber 2018 Christensen and Radford • Territorial responses in group-living species different borders, a common territorial behavior (Watts and Mitani 2001), could be influenced by recent intrusion rates by neighbors with whom these borders are shared.”