Intergroup encounters in wild moor macaques (<Emphasis Type="Italic">Macaca maurus</Emphasis>) |
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Authors: | Kyoko Okamoto Shuichi Matsumura |
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Institution: | (1) Kyoto University, Japan;(2) Present address: Faculty of Humanities, Tokai-Gakuen University, Nakahira, Tenpaku, 464-8514 Nagoya, Japan;(3) Present address: Department of Zoology, University College Dublin, Belfield, Dublin 4, Ireland |
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Abstract: | We studied intergroup encounters among moor macaques at the Karaenta Nature Reserve, South Sulawesi, Indonesia. Group B has
been observed on the basis of individual identification since 1988. We analyzed 85 encounters between members of Group B and
members of neighboring groups from September 1990 to November 1998. The average frequency of intergroup encounters was 0.035/hour.
Neither the presence of females in estrus nor rainfall had an effect on encounter frequency. Behaviors of moor macaques during
intergroup encounters differed from those of Japanese macaques. In moor macaques, no intergroup interactions with body contact
were observed during encounters, and females never directed aggression toward members of different groups. The present study
did not confirm the prediction of the model ofvan Schaik (1989). Extension of the existing models is required to explain the difference in female dominance styles among macaques
by socioecological factors. |
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Keywords: | Intergroup encounter Between-group competition Moor macaques Macaca maurus |
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