Japan researchers find chimps caring for disabled infantStaff writer ▼ | November 13, 2015
A chimpanzee mother cared for her disabled infant in the wild in Tanzania, Japanese researchers reported. They hope will help in understanding the evolution of social care in humans.
Social care To understanding the evolution of social care
"The observed infant exhibited symptoms resembling Down syndrome, similar to those reported previously for a captive chimpanzee," they said in an abstract of the study published Monday in the online edition of Primates, an international journal of primatology.
"The mother's compensatory care for her infant's disabilities and allomothering of the infant by its sister might have helped it to survive for 23 months in the wild" when the infant disappeared and was believed to have died, they said.
Allomothering refers to care of infants performed by those other than the biological mother.
The mother and the sister of the chimpanzee supported its body with their arms when the mother was breastfeeding it, Michio Nakamura, associate professor at Kyoto University's Wildlife Research Center, told AFP on Wednesday.
"Usually, a chimpanzee baby can hang onto their care-giver by itself, but this infant's legs were not powerful enough," he said.
"It is the first time it was observed in the wild that a disabled chimpanzee was receiving social care." ■