The March 2011 nuclear accident at the Fukushima Dai-ichi nuclear power plant has caused mutations in the pale grass blue (Zizeeria mahaI), a common Japanese butterfly.

Zizeeria maha serica (pale grass blue butterfly)


Researchers have found changes in the eyes, and in leg, antennae and wing shapes, and these are being passed on to the next generation.

See the paper in Scientific Reports.