This Fish Emits Damaging Decibels

知道会唱歌的鸟,但是你知道还有会唱歌的鱼么?
时间:2018-01-04 单词数:3240

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导读:你听说过会唱歌的鱼么?据说生活在海洋中的石首鱼是全球叫声最响亮的鱼类。其声音比电锯更响,可能会损害其他海洋动物的耳膜。

知道会唱歌的鸟,但是你知道还有会唱歌的鱼么?_英语新闻

They’re among the most amazing events of the wild world:

它们是自然界最令人惊叹的事情之一:

Africa’s thundering herds of wildebeest.

比如非洲成群的牛羚,

The incredible migrating monarch butterflies.

让人惊叹的帝王蝶迁徙场面。

The captivating chorus ‘corvina sound’of the Gulf corvina. Wait, haven’t heard of that last one?

石首鱼的大合唱。等等,你听过这个么?

It’s a true wildlife spectacle. A fish this loud, this many fish calling.

“没错,这是真的自然景观。而且一条鱼的叫声就很响,那么如果一群鱼一起叫会是什么场面呢。”

Brad Erisman is a fisheries ecologist at the University of Texas, Austin. And to hear him tell it, the chatter of the corvina fish belongs right up there with those other great spectacles.

布拉德.埃里森曼是德克萨斯大学奥斯汀分校的渔业生态学家。他表示,石首鱼喋喋不休的声音和其他伟大的景观一样相媲美。

Every spring, he says, the fish migrate hundreds of miles to the northernmost reaches of the Sea of Cortez, the body of water between Baja, California and mainland Mexico. And there, at the Colorado River Delta, "it has this massive synchronous spawning with outgoing tides for two to three days, every other week, for three months."

他表示,每年春天石首鱼会迁移数百英里至科尔特兹海的最北端,科尔特兹海是位于巴加、加利福尼亚和墨西哥大陆之间的水域。在科罗拉多河三角洲,石首鱼每隔一周就会进行2-3天的大规模产卵,时间与离任的潮汐同步,周期要持续三个月。

And during that time, it also makes this noise, produced by flexing muscles around the swim bladder. "And it allows the swim bladder to reverberate. Much like any sort of drum, any sort of gas-filled chamber."

而就在这段时间,石首鱼因为鱼鳔附近肌肉的伸缩也会发出这种噪声。“这会让鱼鳔回响,就像一种鼓,或者其他充满气体的腔体。”

That simultaneous drumming of hundreds of thousands or even millions of fish is extremely loud. "It’s louder than if you were a meter away from the stage at a rock concert." In fact, Erisman and his colleague Timothy Rowell have found that corvina chatter rivals the decibel levels produced by whales-loud enough, even, to damage the hearing of dolphins-making it among the loudest underwater animal sounds on the planet.

成千上万甚至上百万条鱼同时发出的声音非常响亮。甚至比你站在摇滚音乐舞台1米外的声音还要响。实际上,埃里森曼和同事迪莫斯.罗威尔发现石首鱼的声音与鲸鱼产生的声音分贝不相上下-声音之大,甚至可以使海豚的听力受损-这一特点也使其成为地球上最响的水下动物声音。

The aquatic cacophony is written up in the journal Biology Letters.

该研究结果发表在《生物学快报》杂志上。

But the sound is under attack-by our teeth. "Fried, baked, put it in tacos. Pretty much any way you can think of, you can make corvina." Which spells danger for the singing fish. "It’s heavily exploited, it’s overfished, and we’re really concerned about the fishery collapsing."

但是,这种声音正也在受到我们牙齿的“攻击”。“炸、烤、夹心玉米卷。你能想象得到的很多烹饪办法,都可以用来做石首鱼料理。”我们的食用严重威胁了这个会唱歌的鱼群种类。。它被严重开采、过度捕捞,对该鱼群种类灭绝的担心也与日俱增。

But by spreading the word about the corvina’s signature sound, Erisman hopes to keep the species-and its song-from going silent.

但是,埃里斯曼希望通过描述石首鱼标志性的声音来保护此物种以及它的歌声,而不是使这种声音走向沉默。

来源:科学美国人爱语吧作者:郑大远

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