Pollen-eating Butterflies May Unlock Secrets to Longevity

WHO:

ScienceAlert - Researchers studying butterfly lifespans, specifically members of the Heliconiini tribe.

Phys.org - University of Bristol researchers involved in the study of butterfly longevity.

WHAT:

ScienceAlert - Researchers found a significant variation in lifespans among closely related butterflies, with one species living 25 times longer than others.

ScienceAlert - The maximum reported lifespan of the Heliconius hewitsoni butterfly is 348 days, the longest recorded in scientific literature.

ScienceAlert - The butterfly species Dione juno has a maximum lifespan of 14 days.

ScienceAlert - The average maximum lifespan of pollen-consuming butterflies is around 177 days, compared to approximately 58 days for non-pollen consumers.

Phys.org - Heliconius butterflies are among the longest-lived species ever recorded.

WHERE:

ScienceAlert - Butterflies of the Heliconius tribe are found throughout the tropical rainforests of South and Central America.

WHEN:

ScienceAlert - The study was published in Nature Communications.

WHY:

ScienceAlert - The long lifespans of Heliconius butterflies may be attributed to their unique diet of pollen, which is rich in beneficial fats and amino acids.

HOW:

ScienceAlert - Researchers compiled maximum reported lifespans using data from field studies, public butterfly houses, and mark-release-recapture programs.

ScienceAlert - A pollen-manipulation experiment was conducted, showing that Heliconius hecale butterflies outlived a different genus, Dryas iulia, even when deprived of pollen.

(UPDATED June 17, 2026 08:51 UTC)

Researchers from the University of Bristol have made a fascinating discovery about butterfly lifespans, revealing that some species within the Heliconiini tribe can live dramatically longer than others, with the Heliconius hewitsoni butterfly reaching a maximum lifespan of 348 days, while the Dione juno species only lives for 14 days. This study highlights that the average lifespan of pollen-consuming butterflies is around 177 days, significantly longer than the approximately 58 days for those that do not consume pollen, suggesting that their unique diet rich in beneficial fats and amino acids plays a crucial role in their longevity. The findings, published in Nature Communications, were based on extensive data gathered from field studies and experiments, including a notable pollen-manipulation test that demonstrated the Heliconius hecale butterflies outliving a different genus even without access to pollen.