Abstract
Dominance relationships among male chimpanzees in the Mahale Mountains National Park, Tanzania, were analyzed. Although all adolescent males were unequivocally subordinate to all adult males, dominance relationships within the age classes were much less clear. Especially among adolescent males, few pant-grunts or agonistic interactions occurred. While adolescent males frequently pant-grunted at adult males, these latter males, except the alpha and the youngest, rarely pant-grunted to one another. This suggests that a difference of social status exists between adolescent and adult males. Adult males rarely display overt dominance to one another probably because the presence of other males affects their interactions. Moreover, they seem to try to keep their dominance relationship ambiguous when making it overt is not advantageous to them. This may be a political way for males to coexist with one another in a unit-group.
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Hayaki, H., Huffman, M.A. & Nishida, T. Dominance among male chimpanzees in the Mahale Mountains National Park, Tanzania: A preliminary study. Primates 30, 187–197 (1989). https://doi.org/10.1007/BF02381303
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DOI: https://doi.org/10.1007/BF02381303