A group of tropical butterflies may have evolved an extraordinary way to stay healthy for longer by slowing the aging process itself, according to a University of Bristol-led study published June 16 in Nature Communications.
The butterflies belong to the Heliconius tribe, a group found across the rainforests of Central and South America. Researchers say these insects rank among the longest-lived butterflies ever documented and could become an important model for studying the biology of longevity.
Most butterflies live only a few weeks as adults. In contrast, the study found that some Heliconius species survive about three times longer than their closest relatives on average, with certain individuals living for nearly a year. One of the most striking examples involved Heliconius hewitsoni, which reached a maximum lifespan of 348 days. A closely related species, Dione juno, survived only 14 days, creating a 25-fold difference in maximum lifespan.
The results suggest that Heliconius butterflies have evolved a distinctive lifespan-extending strategy that could offer new clues about how aging slows down in nature.
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