, Volume 39, Issue 3, pp 365–374

Comparative study of grooming relationships among wild Japanese macaques in Kinkazan A troop and Yakushima M troop

  • Hiroyuki Takahashi
  • Takeshi Furuichi

DOI: 10.1007/BF02573084

Cite this article as:
Takahashi, H. & Furuichi, T. Primates (1998) 39: 365. doi:10.1007/BF02573084


The influences of socionomic sex ratio (SSR; adult males/adult female) and troop size upon male-male, female-female, and male-female grooming relationships were examined and compared between two wild Japanese macaque troops (Kinkazan A and Yakushima M troops) in Japan. The Yakushima M troop was smaller and had a higher-SSR than the Kinkazan A troop. Between the troops, (1) the male-male grooming frequency and number of partners were greater in the Yakushima M troop than in the Kinkazan A troop; (2) the female-female grooming frequency and number of partners were not different; and (3) the male-female grooming frequency and number of partners were not different. Based on these features, the patterns of female-female and male-female grooming relationships appear to be independent of SSR and troop size variations. In contrast, male-male grooming relationships are influenced by both factors, especially SSR. Frequent grooming interactions among males may be useful for the continued coexistence of relatively many males especially in a higher-SSR troop.

Key words

Macaca fuscataGrooming relationshipsSocionomic sex ratioTroop sizeNon-provisioning

Copyright information

© Japan Monkey Centre 1998

Authors and Affiliations

  • Hiroyuki Takahashi
    • 1
  • Takeshi Furuichi
    • 2
  1. 1.Primate Research InstituteKyoto UniversityInuyama, AichiJapan
  2. 2.Meiji-Gakuin UniversityYokohamaJapan