Spatiotemporal abnormality dynamics of the pale grass blue butterfly: three years of monitoring (2011-2013) after the Fukushima nuclear accident.
Spatiotemporal abnormality dynamics of the pale grass blue butterfly: three years of monitoring (2011-2013) after the Fukushima nuclear accident.
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DOI：
10.1186/s12862-015-0297-1
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发表时间：
2015-02-10
影响因子：
3.4
通讯作者：
Otaki JM
中科院分区：
文献类型：
--
作者：
Hiyama A;Taira W;Nohara C;Iwasaki M;Kinjo S;Iwata M;Otaki JM
需要对2011年3月福岛核事故造成的放射性污染的生物影响进行长期监测，以了解生活在污染地区的生物体发生了什么情况。在这里，我们调查的异常率（AR）在两个领域捕获的成年人群体和实验室饲养的后代种群的浅草蓝蝶，Zizeeria maha，这一代时间约为一个月的空间和时间的变化。3年来（2011-2013年），我们每年春季和秋季对7个地点（福岛、元宫、广野、磐城市、高、水户和筑波）进行了监测。这些地区的成人AR迅速增加，并在2011年秋季达到峰值，这在未受污染的地区没有观察到。在后代中，总AR，其中包括幼虫，预蛹和蛹阶段的死亡和成虫阶段的形态异常，在2011年秋季或2012年春季达到峰值，远高于亲本田间种群的水平，表明田间种群可能发生了高死亡率和异常。重要的是，田间和后代种群的AR升高分别在2012年秋季和2013年春季恢复到正常水平。不仅在每分钟捕获的个体数的时空动态中，而且在成虫异常率与地面辐射剂量或距电厂的距离之间的相关系数的时间动态中，也得到了类似的结果。这些结果表明，在早期几代人中，不利的生理和遗传影响发生和积累，随后减少并稳定在正常水平，提供了当今核事故后生物动态的最全面记录。本研究还表明，在评估人工污染对野生生物的生物学影响时，考虑世代时间和适应性进化的重要性。本文的在线版本（doi：10.1186/s12862-015-0297-1）包含补充材料，可供授权用户使用。
Long-term monitoring of the biological impacts of the radioactive pollution caused by the Fukushima nuclear accident in March 2011 is required to understand what has occurred in organisms living in the polluted areas. Here, we investigated spatial and temporal changes of the abnormality rate (AR) in both field-caught adult populations and laboratory-reared offspring populations of the pale grass blue butterfly, Zizeeria maha, which has generation time of approximately one month. We monitored 7 localities (Fukushima, Motomiya, Hirono, Iwaki, Takahagi, Mito, and Tsukuba) every spring and fall over 3 years (2011–2013). The adult ARs of these localities quickly increased and peaked in the fall of 2011, which was not observed in non-contaminated localities. In the offspring generation, the total ARs, which include deaths at the larval, prepupal, and pupal stages and morphological abnormalities at the adult stage, peaked either in the fall of 2011 or in the spring of 2012, with much higher levels than those of the parent field populations, suggesting that high incidence of deaths and abnormalities might have occurred in the field populations. Importantly, the elevated ARs of the field and offspring populations settled back to a normal level by the fall of 2012 and by the spring of 2013, respectively. Similar results were obtained not only in the spatiotemporal dynamics of the number of individuals caught per minute but also in the temporal dynamics of the correlation coefficient between the adult abnormality rate and the ground radiation dose or the distance from the Power Plant. These results demonstrated an occurrence and an accumulation of adverse physiological and genetic effects in early generations, followed by their decrease and leveling off at a normal level, providing the most comprehensive record of biological dynamics after a nuclear accident available today. This study also indicates the importance of considering generation time and adaptive evolution in evaluating the biological impacts of artificial pollution in wild organisms. The online version of this article (doi:10.1186/s12862-015-0297-1) contains supplementary material, which is available to authorized users.
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影响因子：
3.7
作者：
Hiyama A;Taira W;Otaki JM
通讯作者：
Otaki JM
影响因子：
4.6
作者：
Hiyama, Atsuki;Nohara, Chiyo;Kinjo, Seira;Taira, Wataru;Gima, Shinichi;Tanahara, Akira;Otaki, Joji M.
通讯作者：
Otaki, Joji M.
影响因子：
3.4
作者：
Otaki JM;Hiyama A;Iwata M;Kudo T
通讯作者：
Kudo T
影响因子：
4.6
作者：
Iwata M;Hiyama A;Otaki JM
通讯作者：
Otaki JM
影响因子：
4.6
作者：
Murakami M;Ohte N;Suzuki T;Ishii N;Igarashi Y;Tanoi K
通讯作者：
Tanoi K