| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
The objective of this study was to evaluate the effect of radioactive materials on the Japanese large field mouse, Apodemus speciosus, by analyzing age distribution, growth, exposure dose, and chromosome aberrations of mice.
The ratio of mice born before and after the F1-NPP accident was significantly low in the Fukushima population. However, our results showed that the population of mice in Fukushima has recovered. The growth of mice is not significantly different in examined areas. There were no radiation-specific chromosomal abnormalities in the mice examined. The external dose of mice in the evacuation area was lower than the air and soil dose rates. Although radiation doses in contaminated areas have been decreasing, exposure doses in mice had not decreased.
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