@misc{oai:repo.qst.go.jp:00069376,
 author = {Nakamori, Taizo and Yoshida, Satoshi and Kubota, Yoshihisa and Ban-nai, Tadaaki and Fujimori, Akira and 中森 泰三 and 吉田 聡 and 久保田 善久 and 坂内 忠明 and 藤森 亮},
 month = {Jun},
 note = {An understanding of the effects of ionizing radiation on non-human biota is required by the International Commission on Radiological Protection for the radiological protection of the environment. Because of their ecological importance, soil invertebrates are used for ecological impact assessments of terrestrial ecosystem pollutants. For chemical substances, single-species laboratory tests are used for ecological impact assessments, and standard tests using earthworms and springtails have been developed by the Organization for Economic Cooperation and Development and the International Organization for Standardization. We applied similar test protocols to examine dose-effect relationships for gamma radiation on survival and reproduction in the earthworm Eisenia fetida (Oligochaeta) and in the springtail Folsomia candida (Collembola). Animals were acutely irradiated at increasing doses of gamma radiation, and subsequent survival and number of neonates produced by irradiated specimens were examined. Reproduction was more sensitive to gamma radiation than survival. The 50% effective doses (ED50) for reproduction were at 11 and 22 Gy in E. fetida and F. candida, respectively. Gene expression was also examined in a speedy assay. A novel technology, High-Coverage Expression Profiling (HiCEP), was applied to detect radiation responsive genes in F. candida. Some genes were up-regulated more than ten fold by acute gamma irradiation at ED50 for reproduction but little by cadmium exposure. These data establish important baselines for the radiological protection of terrestrial ecosystems, and suggest that gene expression in soil invertebrates may be useful to distinguish between impacts of radiation and chemicals in contaminated soils., The First International Conference on Radioecology and Environmental Radioactivity},
 title = {Effects of acute gamma irradiation on soil invertebrates in laboratory tests},
 year = {2008}
}