10-year-old's experiment reveals butterflies remember caterpillar life

Jo Nagai, a 10-year-old student from Kobe, Japan, has made a groundbreaking discovery in the field of entomology. His experiment, which even professional entomologists hadn't managed to conduct, revealed that butterflies retain memories from their time as caterpillars, surviving the dramatic transformation of metamorphosis.

Jo, a scholar of the Son Masayoshi Philanthropic Foundation, observed that butterflies he had raised from caterpillars would return to land on his hand, unlike wild butterflies. This led him to design an experiment using simple household materials, guided by research from Dr. Martha Weiss at Georgetown University. He exposed swallowtail caterpillars to the scent of lavender while applying a mild vibration, training them to associate the smell with the sensation.

After the caterpillars metamorphosed into butterflies, Jo tested them in a Y-shaped tube maze. Around 70% of the butterflies avoided the lavender scent, suggesting that the memory formed as caterpillars had survived the transformation. Jo also tested the offspring and grandchildren of these butterflies, finding that they too showed an increased tendency to avoid the lavender scent, hinting at transgenerational epigenetic inheritance.

While scientists caution that the conclusion is preliminary and requires further study, Jo's findings have sparked significant interest. His work combines childhood curiosity with rigorous scientific investigation, earning him widespread praise for his dedication and innovative thinking.