do young chimpanzees suffer from post traumatic stress after been seperated from their parents ?


chimpanzees ,chimps

from research organizations
Early maternal loss has lifelong effects on
chimpanzees
November 10, 2015
University of Vienna
Wild-caught
chimpanzees, who
were orphaned and imported from Africa in
their early infancy, exhibit an impaired
social behavior also as adults. So far, long-
term effects of early traumatic experiences
on social behavior were known only for
humans and socially isolated chimpanzees.
Wild-caught chimpanzees, who were orphaned
and imported from Africa in their early infancy,
exhibit an impaired social behaviour also as
adults. So far long-term effects of early
traumatic experiences on social behaviour
were known only for humans and socially
isolated chimpanzees. An Austrian-Dutch
research team led by Elfriede Kalcher-
Sommersguter and Jorg Massen published
these results in the scientific journal Scientific
Reports.
Between 1950 and 1980 thousands of
chimpanzee infants were wild-caught in West-
Africa and exported to Europe, Japan, and the
USA, where these chimpanzees have been used
in biomedical research. But also many zoos
comprise wild-caught chimpanzees: the so-
called founder populations.
The new study shows that chimpanzees, who
were maternally deprived within their first two
years of life, were restricted in their social
grooming behaviour even decades later. Social
grooming is highly important for the
establishment and maintenance of social
relationships within groups of chimpanzees.
“The orphaned chimpanzees had a lower
number of partners they groomed and were
less active than were chimpanzees reared by
their mothers,” says Elfriede Kalcher-
Sommersguter of the University of Graz.
These deficits in social grooming are not only
found in chimpanzees that were kept singly
caged for decades in a biomedical laboratory,
before being re-socialised, but also in
individuals, who, after being orphaned, grew
up in social groups in a zoo. “The severity of
the effects of early maternal loss on later
social relationships becomes evident by the
fact that we found deficits even in
chimpanzees that have lived in social groups
for up to 40 years now,” reports Jorg Massen
of the University of Vienna.
http://www.sciencedaily.com/releases/2015/11/151110120232.htm

I’m already feeling sorry for all this chimpanzees, if possible scientists should stop seperating the chimpanzees from their parents till they are older

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