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Ultraviolet rays don't just bronze sunseekers on the beach. Underwater, they can give hammerhead sharks a suntan. And worse—give fish skin cancer. So says a study in the journal PLOS ONE.
紫外線不僅能將沙灘上的游客曬成古銅色，還能將水下的雙髻鯊染成棕色。但更糟糕的是，紫外線會致使魚類患上皮膚癌。正如發(fā)表在《公共科學圖書館-綜合》期刊上的一篇研究報告所說。
Researchers caught 136 coral trout in the southern Great Barrier Reef. Fifteen percent of them had black lesions on their skin: melanoma. Pathogens, toxic chemicals or UV rays can all cause melanoma. But DNA tests ruled out the presence of pathogens. And the fish were caught in the pristine waters of a marine sanctuary, so pollution wasn't to blame.
研究人員在大堡礁南部捕捉了136條鱒魚。其中15%的鱒魚皮膚上出現(xiàn)黑色病變，即黑素瘤。病原體，有毒化學物質或者紫外線都能引發(fā)這種病變。但是DNA檢測結果排除了病原體感染的可能性。并且這些魚都來自于海洋保護區(qū)里的原始海域，所以不能將其歸咎于污染。
Turns out, the trouts' cancer cells looked just like those of fish who'd been hit with UV radiation in the lab. So the researchers concluded that sunshine was the culprit. Makes sense, they say, because these trout live near the world's biggest hole in the ozone layer—meaning more exposure to UV rays.
事實證明，這些鱒魚的病變細胞看起來與實驗室里受紫外線輻射后的魚類似。因此研究人員推斷陽光是罪魁禍首。他們認為這符合情理，因為這些鱒魚生活在世界上臭氧層空洞最大的區(qū)域附近，這意味著它們接觸到了更強的紫外線。
Another recent study, this one in the journal Science, says the severe storms delivered by climate change could punch new holes in the ozone layer, upping our dose of radiation on land and at sea. And that's no fish story.
另一個近期發(fā)表在《科學雜志》上的研究表明，由于氣候變化導致的猛烈風暴會造成新的臭氧層空洞，增加陸地和海洋的紫外線輻射劑量。到時故事就發(fā)展成沒有魚了。
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