Tokyo Electric Power Fukushima Dai-Ichi Nuclear Power Station in Fukushima-Ken, Japan was destroyed due to a magnitude 9 earthquakes in the ocean north east of the Island of Honshu in Japan that produced a historical Tsunami on 11 March 2011. Due to a nuclear meltdown, hydrogen explosions damaged buildings housing reactors, cooling water from the reactor core was contaminated, and huge amounts of radioisotopes were released into the atmosphere and marine waters. Currently, offshore fishing in FUKUSHIMA-KEN, Japan is prohibited because the majority of fish still contain excessive amounts of radioisotopes. Tokyo University of Marine Science and Technology measured the amounts of radioisotopes found in fishes offshore of IWAKI-SHI, located south of the destroyed Nuclear Power Station in FUKUSHIMA-KEN, Japan. Some of these data indicated that female Okamejei kenojei (English Name: Common skete; Japanese Name: KOMON KASUBE) had a negative linear relationship between fish weight and 137Cs/134Cs ratio (137Cs: caesium 137, 134Cs: caesium 134). Therefore, female Okamejei kenojei have the ability to accumulate a specific nuclide (radioisotope). To date, ultracentrifugation and diffusion methods have been used to accumulate specific nuclides for atomic fuel. However, if we could utilise the ability of Okamejei kenojei to accumulate a specific nuclide, we would have an additional method to obtain specific nuclides.

The female Okamejei kenojei (Common skete) has the ability to accumulate a specific nuclide

246th National Meeting (2013)

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