I start biological monitoring in Tokyo Japan to know effects of Fukushima Dai-ichi nuclear power plant accident. However, I cannot find any effect of the accident at the moment, I think we have to continue to observe all species carefully to prevent health effects to human beings.
A beetle and 2 stag beetles are found at the park in Tokyo, Japan. They are healthy. And they have no abnormality.（June 27, 2012）