Hatena::Groupastrobot

male dominance hierarchy

male dominance hierarchy

f:id:astrobot:20111001160131j:image

  • たくさんのメスが中央に。オスが周りを囲む
  • linear and agnostic male dominance hierarchy (based on fighting ability)
  • higher-ranking male has a priority of access to female
  • female forms matrilineal hierarchies.
  • e.g., Macaque, Papio
  • variations
    1. Saimiri
      • form all-male units and all-female units.
      • only in a breeding season, males get fatten and start competing each other.
    2. Mandrillus
      • females choose the dominant male