Envy the whale: a new study finds that toothed whales can reduce their own auditory sensitivity when they expect a loud sound.

Once shorewards of the breakers cetaceans and odontocetes could interpret relative quite as deeper water, and swim shorewards to their sad suicides.

一旦捕捉到向岸碎浪的轻响，海豚和齿鲸可能会由于那种相对的安静而误以为是深水区，并岸边游去，导致令人痛惜的自杀。

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When this split occurred, body sizes for some decreased and brain sizes increased, especially in the ancestors of modern dolphins.

那时，齿鲸亚目（该目包括海豚、齿鲸、抹香鲸、喙鲸等成员）从古鲸亚目中分离出来，而其中的一些成员，特别是现代海豚的祖先，体型减小，大脑体积增大。

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In combination with some relevant sequences from GenBank, 22 individuals of cetaceans including 13 species of seven families from toothed whales and one species of one family from baleen whales were included in the present analysis.

结合GenBank检索得到的相关序列，本文涉及的数据包括齿鲸7个科13个种，须鲸1个科1个种共22个个体。

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In addition, molecular biological techniques have been applied to address phylogenetic relationships among families within the suborder Mysticeti or Odontoceti, and within families, especially within the families Delphinidae and Phocoenidae, and river dolphins.

此外，分子生物学技术还被用于解决须鲸亚目和齿鲸亚目内科间以及科内种间的系统发生关系，特别是齿鲸亚目的海豚科、鼠豚科和淡水豚类。

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And, like all sengis, she's so active, she's permanently hungry.

和所有的象鼩鼱一样，它因为活动量极大所以时时刻刻都觉得饿

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But scientists have only just discovered a new species of elephant shrew or round-eared sengi-in the remote deserts of south western Africa.

但科学家在遥远的西非南部刚刚发现了象鼩的一个新品种圆耳象鼩。

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It used to be called an elephant shrew,

这种动物以前叫做象鼩鼱

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Colugos glidebetween trees using their patagium, or flaps of skin between their front and hind legs and extending to the tail and the neck.

鼯猴利用它们的翼膜在树之间滑翔，该翼膜是它们前后肢之间并一直延伸到尾部和颈部的片状悬垂物。

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That's because colugos prepare for a launch by climbing higher up the tree. And climbing's a lot more strenuous than walking.

这是因为飞鼯猴在准备滑行之前要爬上高高的树，并且爬行比行走更耗体力。

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So researchers tested that idea using colugos-mammals from Southeast Asia that turn into giant skin sails when they stretch out their legs.

因此研究人员用飞鼯猴——一种来自东南亚的哺乳动物，当它们滑行时会伸展出四肢，变成一张巨大的翼膜。

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The flying lemur is not alemur, but the four species of Cynocephalidae are the closes trelated family to primates.

鼯猴并不是狐猴，但鼯猴科的四个物种是灵长类动物最近的亲戚。

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The data packs revealed that each colugo glided an average of a quarter-mile each night.

数据报显示每只飞鼯猴平均一个夜里要滑翔1/4英里。

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Colugosare even webbed between their toes.

鼯猴的趾间甚至都有膜。

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The scientists placed accelerometers onto the backs of six compliant colugos.

科学家在六只飞鼯猴背上安装了加速度计。

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The coastal hypothesis suggests an economy based on marine mammal hunting, saltwater fishing gathering, and the use of watercraft.

沿岸走廊的假设提出了一个基于捕猎海洋哺乳动物、聚集海水捕鱼、使用船只的经济模式。

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The plans incorporated methods used to train marine mammals and included operant conditioning techniques with a positive approach to modifying behavior.

计划包括训练海洋哺乳动物的方法和训练员纠正动物行为的技巧。

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Previous research suggested that these marine mammals could dull their hearing before uttering outgoing echolocation clicks, which are very loud.

之前的研究显示这些海洋哺乳动物向外发射很吵的回声时，他们就可以让听觉变得迟钝。

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The Marine Mammal Center again picked him up and released him in the Farallons, 27 miles from San Francisco.

海洋哺乳动物中心人员只好再把他救起，载到距旧金山27英里的法拉隆岛上放生。

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Great whites have and teeth that are perfect for a powerful on prey ranging from small fish to large marine.

大白鲨的嘴巴和牙齿是一副功能强大的捕猎工具：猎物从小型鱼类到大型海洋哺乳动物。

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People are captivated by these exceedingly intelligent marine mammals, but dolphins pay a very high price for human curiosity.

人们对这种十分聪慧的海洋哺乳动物非常着迷，但海豚却为人类的好奇心付出了宏大的代价。

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