Chimp behaviour is dwindling with human interference
Chimpanzees are losing their distinctive behaviours in areas of high human activity, new research suggests.
The international team of researchers warned that some traits, which have yet to be noticed in the animals, could disappear without intervention.The behaviours of chimpanzees, for example the tools they use and gestures they communicate with, vary between groups. ‘The analysis revealed a strong and robust pattern – chimpanzees had reduced behavioural diversity at sites where human impact was high,’ lead author Dr Ammie Kalan said.‘On average, chimpanzee behavioural diversity was reduced by 88% when human impact was highest compared to locations with the least human impact.’
‘Our results suggest that chimpanzee populations are losing their characteristic sets of behavioural traits and that a number of not yet discovered behaviours may be lost without having ever been described,’ the authors wrote.
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