Wild chimpanzees have been captured on camera indulging in a rather unusual behavior – eating and sharing fruit containing alcohol. This groundbreaking discovery was made by researchers who placed cameras in Guinea-Bissau’s Cantanhez National Park and observed the chimps sharing fermented African breadfruit.
The scientists behind the study are intrigued by the implications of this finding. They are now questioning whether and why chimpanzees deliberately seek out alcohol. Drawing parallels to human behavior, they believe that consuming alcohol may have benefits for social bonding, similar to how it affects humans.
Anna Bowland, a researcher from the University of Exeter, explained, “For humans, we know that drinking alcohol leads to a release of dopamine and endorphins, resulting in feelings of happiness and relaxation. Sharing alcohol, such as through traditions like feasting, helps to form and strengthen social bonds. So, now that we know wild chimpanzees are consuming ethanolic fruits, the question arises: could they be experiencing similar benefits?”
The researchers used motion-activated cameras to capture footage of chimps sharing fermented fruits on multiple occasions. The alcohol content of the fruits was tested, with the highest level found to be equivalent to 0.61 per cent strength. Given that 60-85% of a chimp’s diet consists of fruit, the researchers believe that the cumulative consumption of low levels of alcohol from various sources could be significant.
It is unlikely that the chimps are getting drunk from consuming fermented fruits, as this would not be advantageous for their survival. The impact of alcohol on their metabolism remains unknown, but recent discoveries of a molecular adaptation in the common ancestor of African apes suggest that eating fermented fruits may have ancient origins in species including humans and chimps.
Dr. Kimberley Hockings, also from the University of Exeter, highlighted the significance of this behavior. She stated, “Chimps don’t share food all the time, so this behavior with fermented fruit might be important. We need to find out more about whether they deliberately seek out ethanolic fruits and how they metabolize it, but this behavior could be the early evolutionary stages of ‘feasting’. If so, it suggests the human tradition of feasting may have its origins deep in our evolutionary history.”
The research paper detailing this fascinating discovery, titled “Wild Chimpanzees Share Fermented Fruits,” has been published in the journal Current Biology.
In conclusion, this study sheds light on the complex behaviors of wild chimpanzees and raises intriguing questions about the evolutionary origins of alcohol consumption in humans and chimps. The parallels drawn between their behavior and human traditions highlight the interconnectedness of all living beings on Earth.
