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Effects of acute gamma irradiation on soil invertebrates in laboratory tests

Published online by Cambridge University Press:  06 June 2009

J. Barescut ,
T. Nakamori ,
Y. Kubota ,
T. Ban-nai ,
Y. Fujii  and
S. Yoshida
T. Nakamori
Affiliation:
National Institute of Radiological Sciences, Chiba 263-8555, Japan
Y. Kubota
Affiliation:
National Institute of Radiological Sciences, Chiba 263-8555, Japan
T. Ban-nai
Affiliation:
National Institute of Radiological Sciences, Chiba 263-8555, Japan
Y. Fujii
Affiliation:
Yokohama National University, Yokohama 240-8501, Japan
S. Yoshida
Affiliation:
National Institute of Radiological Sciences, Chiba 263-8555, Japan
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Abstract

An understanding of the dose-effect relationships of ionising radiation for nonhuman biota establishes important baselines for the radiological protection of ecosystems. We used standard laboratory tests to examine the dose-effect relationships of gamma radiation on the survival, growth and reproduction of the earthworm, Eisenia fetida (Oligochaeta). Adult E. fetida were acutely irradiated with increasing doses of gamma radiation, and the subsequent survival, growth in wet weight and number of offspring were examined. The 50% lethal dose (LD50) was 825 Gy, and the 10% and 50% effective doses (ED10 and ED50) for growth were 20.2 and 94.7 Gy, respectively. The ED10 and ED50 for reproduction were 3.3 and 11.1 Gy, respectively.

Type
Research Article
Information
Radioprotection , Volume 44 , Issue 5: ECORAD 2008 - Radioecology and Environmental Radioactivity , 2009 , pp. 421 - 424
Copyright
© EDP Sciences, 2009

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