Tropical Butterflies' Unique Lifespan Offers Clues to Longevity

WHO:

KSL News - Dr. Jessica Foley, lead author and postdoctoral scholar at Tufts University's Jean Mayer USDA Human Nutrition Research Center on Aging in Boston.

KSL News - Dr. Jaret C. Daniels, curator and interim associate director for the McGuire Center for Lepidoptera and Biodiversity at the Florida Museum of Natural History.

WHAT:

Science Daily - Heliconius butterflies have evolved an extraordinary lifespan, living several times longer than closely related species.

KSL News - The Dione juno butterfly lives for 14 days after reaching adulthood, while Heliconius hewitsoni lives for 348 days, nearly 25 times longer.

KSL News - Other Heliconius species have lifespans ranging from 106 to 277 days.

KSL News - The study published in the journal Nature Communications examined lifespan and aging patterns across the Heliconius genus.

WHERE:

KSL News - Heliconius butterflies inhabit the tropical rainforests of South and Central America.

WHEN:

KSL News - The study was published on a Tuesday in the journal Nature Communications.

WHY:

KSL News - The research aims to understand the evolutionary basis of lifespan differences, which may provide insights relevant for healthy aging in humans.

KSL News - The extended adulthood of Heliconius butterflies may be due to their consumption of an enhanced diet, rather than relying purely on carbohydrates.

HOW:

KSL News - Researchers combined an expansive dataset from commercial butterfly houses and mark, release, and recapture studies, as well as controlled experiments.

KSL News - The researchers used a device called "The Pullinator" to measure age-related decline in older butterflies through a grip-strength test.

KSL News - The study found that even when pollen was withheld, Heliconius butterflies lived much longer than their non-pollen feeding relatives.

(UPDATED June 22, 2026 16:30 UTC)

A new study published in the journal Nature Communications reveals that Heliconius butterflies have evolved to live significantly longer than their closely related species, with some individuals, like Heliconius hewitsoni, reaching lifespans of 348 days, nearly 25 times longer than the 14-day lifespan of the Dione juno butterfly. Researchers, including Dr. Jessica Foley from Tufts University and Dr. Jaret C. Daniels from the Florida Museum of Natural History, conducted extensive experiments and analyzed data from butterfly houses to understand the evolutionary basis for these lifespan differences, which may offer insights into healthy aging in humans. The study suggests that the extended adulthood of Heliconius butterflies could be linked to their enhanced diet, as they continue to thrive even when pollen is withheld, unlike their non-pollen feeding relatives.