霊長類行動学13. 父子関係 - 明日とロボット

e.g.,
- all Callitrichids - classic case
- Aotus
- Hylobates syndatylus
- Macaca Sylvanus

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.

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?)

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

i.e., "infant use", "infant carrying", "counter carrying", "tripartite velations", "triatic male infant interactions"
e.g.,
- Papio
- Therapeticus

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