Japanese snow monkeys have learned to fish for food 
By Andrei Ionescu JP Source: earth 1/13/2023
Andrei Ionescu
The Japanese macaque (Macaca fuscata) is found on the main islands of Japan, except Hokkaido, and is the most northerly occurring non-human primate in the world. In addition, in parts of its range it inhabits sub-alpine regions of the Japanese Alps (elevation 1500–1600 m), which become extremely cold and harsh during winters. Since the monkeys have little access to their preferred diet of fruits, seeds, flowers and leaves when snow covers the ground, scientists have wondered what they eat in order to survive.
 

Previous research involving the DNA analysis of fecal samples from macaques living in Chubu Sangaku National Park during winter revealed evidence not only of the bark and leaves of bamboo (that stand out above the snow), but also of freshwater fish, mollusks and aquatic arthropods. It is very rare for monkeys to eat fish, unless the fish are dead or dying, trapped in receding pools. A research team led by scientists from Shinshu University therefore decided to investigate how and where the macaques are catching fish to supplement their winter diet.

 
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