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Jayme Lewthwaite

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Postdoctoral Fellow, Entomology, Carleton University

Whereas most adult butterflies rely entirely on sugary nectar to fuel them, butterflies in the Heliconius genus have evolved to also eat pollen. Pictured here is an Agraulis vanillae. (Wikimedia Commons/ Christina Butler)

August 3, 2026

Some tropical butterflies live surprisingly long lives. Is it their high‑protein diet?

Jayme Lewthwaite, Carleton University and Arne Mooers, Simon Fraser University

Heliconius butterflies eat high-protein pollen and seem to age well.

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Joined July 3, 2026