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Morphological reproductive characteristics of testes and fertilization capacity of cryopreserved sperm after the Fukushima accident in raccoon (${it Procyon lotor}$)

福島第一原子力発電所事故後のアライグマの精巣の形態学的生殖特性および凍結保存された精子の受精能力

小松 一樹*; 岩崎 亜美*; 村田 康輔*; 山城 秀昭*; Goh, V. S. T.*; 中山 亮*; 藤嶋 洋平*; 小野 拓実*; 木野 康志*; 清水 良央*; 高橋 温*; 篠田 壽*; 有吉 健太郎*; 葛西 宏介*; 鈴木 正敏*; Grazia Palmerini, M.*; Belli, M.*; Macchiarelli, G.*; 岡 壽崇  ; 福本 学*; 吉田 光明*; 中田 章史*; 三浦 富智*

Komatsu, Kazuki*; Iwasaki, Tsugumi*; Murata, Kosuke*; Yamashiro, Hideaki*; Goh, V. S. T.*; Nakayama, Ryo*; Fujishima, Yohei*; Ono, Takumi*; Kino, Yasushi*; Shimizu, Yoshinaka*; Takahashi, Atsushi*; Shinoda, Hisashi*; Ariyoshi, Kentaro*; Kasai, Kosuke*; Suzuki, Masatoshi*; Grazia Palmerini, M.*; Belli, M.*; Macchiarelli, G.*; Oka, Toshitaka; Fukumoto, Manabu*; Yoshida, Mitsuaki*; Nakata, Akifumi*; Miura, Tomisato*

福島第一原子力発電所事故後、野生アライグマは長期的な低線量率被ばくを受けた。捕獲したオスの野生アライグマの精巣の形態的特徴と、凍結保存精子の体外受精能力を調べたところ、長期的・低線量率被ばくはアライグマの生殖特性および機能に悪影響を及ぼしていないことがわかった。

We have established an archive system of livestock and wild animals from the surrounding ex-evacuation zone. Wildlife within the alert zone have been exposed to low-dose-rate (LDR) radiation for a long and continuous time. In this study, we analysed the morphological characteristics of the testes and in vitro fertilization (IVF) capacity of cryopreserved sperm of raccoons from the ex-evacuation zone of the FDNPP accident. This study revealed that the chronic and LDR radiation exposure associated with the FDNPP accident had no adverse effect on the reproductive characteristics and functions of male raccoons.

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