By comparing the differences between butterflies collected in different locations, the team found that butterflies in radioactive areas had much smaller wings and their eyes grew abnormally.
“In the past, it was believed that insects are highly resistant to radiation. Therefore, the results of the study this time are surprising ”- Professor Joji Otaki, of Ryukyus University (Okinawa) – head of the research team, told the BBC.
Then, Professor Otaki’s group had the butterflies mated together in a laboratory 1,750km away from Fukushina to suppress the effects of radiation in the environment. The next generation of butterflies developed unprecedented anomalies on their parents like malformed beards.