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2011-10-19

霊長類行動学13. 父子関係

霊長類行動学もくじ

Male infant interactions

  • 5 classifications of male and infant interaction
    • 1. Intensive
    • 2. affiliative
    • 3. Occasional Affiliative
    • 4. Tolerance
    • 5. Use and Abuse

1. Intensive

Callitrichids
  • mothers regularly have twins
  • in total up to 25% of mother's weight at birth
  • high energetic demand to produce high protein milk
  • carrying infant around and catching bugs cost too much on top of it
  • so males provide share patterning by doing including
    • carry offspring
    • grooming
    • protect
    • confort
    • everything except nursing
  • mating patterns like polyandry or monogamy is rare. but in this case,
    • small
    • twin
    • diet is insect
  • so, males are FORCED not to be polygyny.
Hylobates
  • male carries and protect
Macaca Sylvanus
  • Weird
  • Promiscuous mating
    • like other macaque, male dominance hierarchy
    • distinct mating season, agonistic hierarchy
    • live in high altitude - Atlus mountain (North Africa)\
    • eat pine nale
  • form coalition, male bonding in spite of its hierarchy
    • female roam around and mate all males in order
  • male carries and protect children
    • ritual male interaction
    • passing children around between males. (play with kids?)

2. Affiliative

  • e.g.,
  • Affiliative behavior is
    • not same as parental care
    • male affiliative bond with kids
      • know he is my children
      • take playground, etc
    • but no substantial parental care
    • characterized by spatial proximity
    • species specific things

3. Occasional Affiliative

  • Short-end of affiliative
    • i.e., like affiliative, but less frequent. less consistantly.
  • e.g., Chimp, Gerad
  • in multi male species, they become affiliative
    • when dominant male lose status
      • to avoid new dominant to kill his children
    • when new male moves into group
      • suddenly all become affiliative to protect their children

  • Interesting example
    • Therapithecus
      • young male affiliate with kids, but the kids is a young female for future mating opportunity.
        • no tension between her father because the female is his daughter

4. Tolerance -- most are

  • common pattern
  • don't really care, don't kill
    • neutral

5. Use and Abuse

  • two types
  • 1. agonistic buffering - use
  • 2. infanticide - abuse

Agonistic buffering - "kidnapping"
  • i.e., "infant use", "infant carrying", "counter carrying", "tripartite velations", "triatic male infant interactions"
  • e.g.,
  • happen in all multi-male group
  • 1. kidnapping
    • male picks up a child the opponent likes to reduce tention
    • 子供を人質にとって攻撃をやめさせる。
  • 2. variant - "passport"
    • use children as a passport to approach to hateful other male
  • 3. variant
    • affiliate with kids to approach female
    • humans do the same thing

霊長類行動学もくじ

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