I***i
发帖数: 14557 | 1 http://www.cbsnews.com/8301-202_162-57492524/report-mutated-but
August 13, 2012 10:52 PM
Report: Mutated butterflies found near Fukushima
(CBS News) A group of scientists in Japan made a surprising discovery by
finding large numbers of specimens of pale grass blue butterflies that had
mutated.
In a report in the Scientific Reports journal, the scientists said their
research concluded that "that artificial radionuclides from the Fukushima
Nuclear Power Plant caused physiological and genetic damage to this species.
" The scientists said their findings were not expected.
"It has been believed that insects are very resistant to radiation," lead
researcher Joji Otaki from the University of the Ryukyus, Okinawa, told the
BBC. "In that sense, our results were unexpected."
A magnitude-9 earthquake in March 2011 triggered a tsunami that badly
damaged the Fukushima Dai-ichi reactors. Radiation spewed from the plant
into the ground, air and water nearby for a while until plant workers got
the leak under control.
Japanese officials have long since declared much of the surrounding area
safe for humans, and they even opened a nearby beach for swimmers, but
reports of radioactive - and now mutated - wildlife have been periodically
arising.
In May of this year, U.S. wildlife officials reported finding radioactive
tuna that had made the 6,000-mile journey from Japan. Previously, smaller
fish and plankton were found with elevated levels of radiation in Japanese
waters, although both the tuna and those sea creatures were found to have
levels of radiation below what could harm a human.
The pale grass blue butterflies (Zizeeria maha) that were mutated generally
had smaller wings and irregularly developed eyes, reports BBC.
The scientific team concluced that it wasn't just the consumption of
radioactive food that caused the mutations, but it was also mutated genetics
passed down from older generations that ate radioactive food, BBC reports.
That means that even after the residual radiation from the Fukushima
disaster faded, radiation was still affecting the species' development. | l****a
发帖数: 4017 | 2 可怕。刚看到中文版的，贴上来吧。
【环球网报道实习记者 赵朔苇】据澳大利亚新快网8月13日报道，日本研究人员称，福
岛核电站泄露的核辐射已造成了国内大量的蝴蝶品种出现畸形。科学家还怀疑其它物种
是否也已基因突变。
报道称，研究人员分别在核泄漏事件后的数周和数月内收集了几百只蝴蝶，并发现
超过10%的蝴蝶已变畸形，其翅膀变得异常小。这些蝴蝶繁殖出来的第二代，其畸形率
大增至33%，甚至有一些蝴蝶过早死亡。
科学家在英国《自然》期刊上发表文章称，相信核泄漏是引起蝴蝶基因突变的原因
。科学家们还呼吁对其它动物进行进一步研究，看看是否也有基因突变的情况出现。
据悉，日本福岛核电站于2011年3月11日因地震发生泄漏。2011年4月12日，日本政
府宣布，对福岛核电站的核泄漏等级评定为7级。这意味着它达到了与切尔诺贝利核事
故同样的等级，属于最高级别。 | i*****s
发帖数: 15215 | 3 嗯，好像是突变的不稳定，变着变着就死了。如果有越变越强大的，就大事不好了。 | l****a
发帖数: 4017 | 4 也有可能。。不过有利变异，只有少数，变异一般都是往坏的哪方面的。。。
【在 i*****s 的大作中提到】
: 嗯，好像是突变的不稳定，变着变着就死了。如果有越变越强大的，就大事不好了。
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