2020
DOI: 10.1038/s41598-020-72882-y
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Observation of morphological abnormalities in silkworm pupae after feeding 137CsCl-supplemented diet to evaluate the effects of low dose-rate exposure

Abstract: Since the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, morphological abnormalities in lepidopteran insects, such as shrinkage and/or aberration of wings, have been reported. Butterflies experimentally exposed to radiocesium also show such abnormalities. However, because of a lack of data on absorbed dose and dose–effect relationship, it is unclear whether these abnormalities are caused directly by radiation. We conducted a low dose-rate exposure experiment in silkworms reared from egg to fully deve… Show more

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Cited by 6 publications
(8 citation statements)
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“…These results were in contrast to previous field-based studies. However, these results are consistent with a similar study in Tanaka et al (2020) [ 50 ], in which 137 CsCl was given to silkworms. These key experiments [ 49 , 50 ] have demonstrated that these lepidopteran insects and possibly other insects are resistant against relatively low-dose radioactive exposure itself under experimental conditions in the laboratory despite their vulnerability in the field.…”
Section: Introductionsupporting
confidence: 93%
See 1 more Smart Citation
“…These results were in contrast to previous field-based studies. However, these results are consistent with a similar study in Tanaka et al (2020) [ 50 ], in which 137 CsCl was given to silkworms. These key experiments [ 49 , 50 ] have demonstrated that these lepidopteran insects and possibly other insects are resistant against relatively low-dose radioactive exposure itself under experimental conditions in the laboratory despite their vulnerability in the field.…”
Section: Introductionsupporting
confidence: 93%
“…However, these results are consistent with a similar study in Tanaka et al (2020) [ 50 ], in which 137 CsCl was given to silkworms. These key experiments [ 49 , 50 ] have demonstrated that these lepidopteran insects and possibly other insects are resistant against relatively low-dose radioactive exposure itself under experimental conditions in the laboratory despite their vulnerability in the field. This discrepancy between field-based and laboratory-based results is called the field–laboratory paradox [ 51 ], which led us to propose that the biological effects on the pale grass blue butterfly in Fukushima in the field are mediated by “field effects”, one of which is mediated by ecological interactions with its host plant [ 43 , 44 , 45 , 46 , 51 ].…”
Section: Introductionsupporting
confidence: 93%
“…Later, this interpretation turned out to be incorrect; the pale grass blue butterfly was resistant to high levels of 137 Cs ingestion from an artificial diet (Gurung et al, 2019). High radiation resistance of lepidopteran insects was also confirmed by the silkworm moth in a similar feeding experiment (Tanaka et al, 2020).…”
Section: Biological Systems To Study In the Laboratorymentioning
confidence: 99%
“…8 The absorbed dose rate of internal exposure (0.81 mGy/day) was higher than that of external irradiation (0.21 mGy/day). 9 It has been reported that I-125 seeds was safe and effective in a variety of different tumors, such as head and neck cancer, 10 parotid adenoid cystic carcinoma, 11 high-grade gliomas, 12 papillary thyroid carcinoma recurrence, 13 and even in vulvar squamous cell cancer. 14 In this article, we described a case with LUSC patient who was treated using I-125 seeds in our department in recent years.…”
Section: Introductionmentioning
confidence: 99%