In 1954, a four-year-old female Japanese macaque named Imo on Koshima Island, Miyazaki Prefecture, began carrying sweet potatoes from a sandy beach to a stream, and dipping them in the water before eating them. Later, Imo learned to use seawater to season food with salt. She took wheat that had been scattered on the beach and put it into the seawater, she then collected the floating wheat and ate it. This new behavior was gradually transmitted to the other members of the group. It was labeled “pre-cultural behavior” and it garnered international attention.

■References (Books, papers, Web articles, etc.)
『ニホンザルの生態』　　河合雅雄　（河出書房、1964）

Related iCards： Imanishi extends the concept of ”Culture” (Vol 1.)

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■The References list of “Evolution of Human Sociality”