Hibernation linked to longer lifespan of bats
Why bats?
A mammals lifespan tends to be linked to its body size. So in theory, the larger the species, the longer it will live. Bats seem to be an exception to this rule with an unusually long lifespan for their body size. Some are shown to live more than four times longer than similar sized mammals.
The big brown bat (Eptesicus fuscus) is the most common bat in North America. A 2022 study on a colony of bats in Ontario, Canada has been looking into their unusually long lifespan of up to 19 years and found a link between longevity, biological ageing and hibernation!
A previous study had contributed to the discovery of “longevity” genes. The more recent research suggests that these genes are very closely associated to those related to hibernation.
How do they know?
A biological process involved in the way in which genes are expressed, called DNA methylation, was measured to find that changes in this process took place in certain...




