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Chimpanzees in Uganda have overhunted red colobus monkeys, causing their local population to fall to one-tenth of what it was just 33 years ago, a new study has found. This is the first time a non-human primate has been shown to overhunt another, leading to a population decline.
The number of red colobus killed by the chimpanzees in Kibale National Park had increased from an estimated 167 per year in the late 1990s to 322 in 2002. During that time, the chimpanzees killed between 15 and 53 per cent of the red colobus population each year, taking a particularly heavy toll on young animals that had not yet reproduced.
Watts says the chimps are now hunting less than they did, so young males are not getting as many opportunities to acquire the skill. That means the red colobus may not face as great a threat from them in the near future, and so could yet bounce back.
"Observations of fishing by orangutans raise the likelihood that hominids ate meat, including fish, before the emergence of the Homo genus around 2.5 million years ago", said anthropologist David Braun of the University of Cape Town in South Africa. Anthropologists have traditionally held that meat-eating first assumed prominence among early Homo species and fueled brain expansion.
Originally posted by Griffo
reply to post by Blaine91555
I saw this article a few weeks ago about orang-utans that stated something similar
"Observations of fishing by orangutans raise the likelihood that hominids ate meat, including fish, before the emergence of the Homo genus around 2.5 million years ago", said anthropologist David Braun of the University of Cape Town in South Africa. Anthropologists have traditionally held that meat-eating first assumed prominence among early Homo species and fueled brain expansion.
Orangutans Use Simple Tools to Catch Fish