The biological impacts of the Fukushima nuclear accident on the pale grass blue butterfly

http://www.nature.com/srep/2012/120809/srep00570/full/srep00570.html   

The collapse of the Fukushima Dai-ichi Nuclear Power Plant caused a massive release of radioactive materials to the environment. A prompt and reliable system for evaluating the biological impacts of this accident on animals has not been available. Here we show that the accident caused physiological and genetic damage to the pale grass blue Zizeeria maha, a common lycaenid butterfly in Japan...............

Adult butterflies collected in September 2011 showed more severe abnormalities than those collected in May. Similar abnormalities were experimentally reproduced in individuals from a non-contaminated area by external and internal low-dose exposures. We conclude that artificial radionuclide from the Fukushima Nuclear Power Plant caused physiological and genetic damage to this species.

.