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神奇的物种:弓头鲸双语阅读

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北极海冰下方,在一月的极夜的毯子,弓头鲸最喜欢唱歌。
 
而座头鲸已经收到了最多的关注,原来他们须鲸表亲能够有一个更大的剧目。
 
斯瓦尔巴德岛附近的北极露脊鲸种群的研究表明,他们的音乐电话可以作为那些鸣禽不同。
 
这将使它们在鲸鱼种群中,甚至哺乳动物中都是独一无二的。
 
在三年的时间里,斯匹次卑尔根种群的鲸鱼产生了184种独特的歌曲类型。声音进行检测,一天24小时在每年的冬季。
 
“字母的北极有成千上万封信就可以告诉我们,“Prof Kate Stafford,该研究发表在皇家学会学报上发表的第一作者,告诉英国广播公司新闻。
 
“我真的认为座头鲸的歌就像古典音乐一样。”。非常有序。他们可能会持续20到30分钟。一个人[头]的歌可能只有45秒到2分钟长,但他们会重复这首歌一遍又一遍,”她补充说。
 
座头鲸是已知的类似的歌曲唱过一个赛季,但对弓头鲸,歌曲类型只持续了几个小时或几天之前改变。
 
这些复杂的歌曲是不寻常的,因为大多数哺乳动物有不同的,重复的调用,不改变。
 
虽然很少有关于北极的人群,认为男性歌唱在繁殖季节可能。
 
与突破长达半米的冰的能力,和200年的潜在寿命,弓头鲸可以看起来很强大。


Beneath the Arctic sea ice, in the blanket of January’s polar night, bowhead whales most prefer to sing.

While the songs of humpback whales have long received the most attention, it turns out that their baleen cousins could have a far greater repertoire.

A study of a bowhead population near Svalbard has shown that their musical calls may be as varied as those of songbirds.

This would make them unique among whale populations, and possibly even mammals.

Over the course of three years, the whales of the Spitsbergen population produced 184 unique song types. The vocalisations were detected 24 hours a day throughout most of the winter each year.

"The alphabet for the bowhead has got thousands of letters as far as we can tell," Prof Kate Stafford, lead author of the study published in the Proceedings of the Royal Society, told BBC News.

"I really think of humpback whale songs as being like classical music. Very ordered. They might last 20 - 30 minutes. An individual [bowhead] song might only be 45 seconds to 2 minutes long, but they’ll repeat that song over and over again," she added.

Humpback whales are known to sing similar songs across a single season, but for bowheads, song types only lasted a few hours or days before changing.

These complex songs are unusual, as most mammals have distinct, repetitive calls which do not vary.

Although less is known about bowhead populations, the authors think it likely that males do the singing during the breeding season.

With the ability to break through up to half a metre of ice, and a potential lifespan of 200 years, bowheads can seem quite formidable.

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