後援：ＨＯＰＥ

演者：Luc-Alain Giraldeau教授（ケベック大学）

Animals that live in groups and forage together seem to develop exploitative　relationships. Some individuals search for food, others wait for searchers to find this food.

This leads to a game between two strategies, producer (searchers) and scroungers (waiters). Game theory models of this phenomena were successfully constructed and used to test this prediction using small south-east Asian birds in the lab. A series of potential problems with the idea that animals use information generated by others is also discussed. The same producer-scrounger game type was develop for information use and it was found that when animals use the information generated by others, the group as a whole ends up with much less information. There are also other problems with social information, some of which involve potential informational cascades.

Recent books by the author:
Bolhuis, J and L.-A. Giraldeau (eds). 2005. The Behavior of Animals : Mechanisms, Function and Evolution. Blackwell, New York.

Giraldeau L-A. 2004 Evolution and the central nervous system. Brain Behavior and Evolution,Vol 63 No 4.

Giraldeau, L-A. and T. Caraco. 2000. Social Foraging Theory. Princeton University Press.

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