Alcohol in the Wild; Animals and Humans Share Alcohol Consumption

A recent study shows that alcohol, which has been recognized as part of human culture, is also prevalent in the animal kingdom. This study, conducted by the University of Exeter in the UK and published in the journal 'Trends in Ecology and Evolution', emphasizes that alcohol naturally exists in every habitat on Earth and many animals regularly consume this substance. Anna Boland, one of the researchers of this study, states: 'This discovery indicates that our human-centered attitude towards alcohol needs to change. Ethanol is abundant in the natural world, and its consumption by animals can raise new questions about ecological behaviors.' When fruits fall and rot, yeasts present in the air and in the fruit itself convert its sugars into ethanol. This is why sometimes rotten fruits may smell like beer or wine. These fruits usually do not produce more than one to two percent alcohol, but scientists have found that some rotting palm fruits in Panama contain over 10 percent alcohol, which is roughly equivalent to the alcohol found in wine. However, even one to two percent alcohol is sufficient for a small bird or mammal to experience a risky sense of euphoria. Researchers emphasize that they do not know whether animals seek intoxication and euphoria from alcohol. Scientists at least know that drinking alcohol in human societies facilitated social relationships and even contributed to the creation of the first cities. This research also focuses on the role of alcohol in animal behavior. For example, fruit flies living in ethanol-rich environments use this substance as a defense mechanism against parasites. Studies have also shown that male fruit flies, if rejected by female flies during mating attempts, turn to alcohol consumption, and female fruit flies show less strictness in mating with male flies after drinking alcohol. Additionally, researchers at Tel Aviv University, led by Eran Levin, have recently discovered that eastern honeybees may be the only animals capable of consuming unlimited amounts of alcohol without negative effects on mortality or behavior. Dr. Sofia Boucheti, one of the authors of this study, states: 'They can consume up to 80% ethanol solution without any negative impact on their mortality or behavior.' These findings not only add to our knowledge about alcohol tolerance in animals but also present new challenges for a better understanding of the evolution of alcohol consumption in the natural world. Matthew Krigan, from Central Florida College, who collaborated on this research, stated: 'One of our next steps is to test whether animals in the wild prefer food containing ethanol or only consume it when ethanol levels are very low and undetectable.'