The use of stone tools by macaques in Thailand has reduced the size and population density of coastal shellfish; previously it was thought that tool-assisted overharvesting effects resulted uniquely from human activity.

中文翻译：

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猴子过度捕捞贝类

泰国猕猴使用石器减少了沿海贝类的体型和种群密度；以前，人们认为工具辅助的过度采伐效应是人类活动唯一导致的。