«Breaking News» Human activity is changing the behaviour of chimps

Chimpanzees are losing their distinctive behaviours in areas of high human activity, new research suggests. 

It warns some of their traits could be lost forever if no action is taken. 

This includes the extraction and consumption of termites, ants, algae, nuts and honey, as well as the use of tools for hunting and digging. 

The behaviours of chimpanzees, for example the tools they use and gestures they communicate with, vary between groups.  

Use of stones, pools and caves was also considered. 

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Chimpanzees are losing their distinctive behaviours in areas of high human activity, new research suggests. It warns some of their traits could be lost forever if no action is taken 

A study of 144 different wild groups in 15 countries found the range of behaviours shown by the animals was reduced in areas where humans had made the biggest mark.  

Existing research suggests they may learn from members of their community, meaning each group is culturally different, much like humans. 

Data on 31 chimpanzee behaviours across the groups was compiled for the study. 

It found that chimpanzee communities in areas with a high degree of human impact were on average 88 per cent less likely to exhibit the behaviours than groups in areas with the least human impact.

Human impact was measured using factors such as human population density, roads and rivers. 

'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. 

'This pattern was consistent, independent of the grouping or categorisation of behaviours. 

'On average, chimpanzee behavioural diversity was reduced by 88% when human impact was highest compared to locations with the least human impact.' 

Existing research suggests they may learn from members of their community, meaning each group is culturally different, much like humans. Data on 31 chimpanzee behaviours across the groups was compiled for the study

The researchers suggest that chimpanzee populations in areas with high human activity may be smaller, making it hard to pass on certain traits between generations. 

The animals may stop displaying some behaviours to avoid attracting human attention and climate change could also be impacting behaviours, they said.

'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. 

They suggest 'chimpanzee cultural heritage sites' are needed to protect these diverse sets of behaviours. 

'Specific interventions are needed to protect their natural resources and tool-use sites in order to maintain behavioural plasticity and safeguard their capacity for cultural evolution,' the authors wrote. 

The study, led by the Max Planck Institute for Evolutionary Anthropology and the German Centre for Integrative Biodiversity Research, has been published in the journal Science. 

WHO IS SMARTER: CHIMPS OR CHILDREN?

Most children surpass the intelligence levels of chimpanzees before they reach four years old.

A study conducted by Australian researchers in June 2017 tested children for foresight, which is said to distinguish humans from animals.

The experiment saw researchers drop a grape through the top of a vertical plastic Y-tube.

They then monitored the reactions of a child and chimpanzee in their efforts to grab the grape at the other end, before it hit the floor.

Because there were two possible ways the grape could exit the pipe, researchers looked at the strategies the children and chimpanzees used to predict where the grape would go.

The apes and the two-year-olds only covered a single hole with their hands when tested.

But by four years of age, the children had developed to a level where they knew how to forecast the outcome.

They covered the holes with both hands, catching whatever was dropped through every time.

Link hienalouca.com

https://hienalouca.com/2019/03/07/human-activity-is-changing-the-behaviour-of-chimps/
Main photo article Chimpanzees are losing their distinctive behaviours in areas of high human activity, new research suggests. 
It warns some of their traits could be lost forever if no action is taken. 
This includes the extraction and consumption of termites, ants, algae, nuts and honey, as well as the use of t...

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