知识 每天一分钟VOA、BBC听力 第514期 2019-06-12 创建 播放:14093

介绍: A water-proof drone is being used by Australian scientists to collect the highly-treasured nasal mucus of migrating whales. The snot is rich with fresh DNA, viruses and bacteria, and is collected by a drone that hovers over the blowholes of humpback whales as they embark on their epic annual journey along Aus...

介绍: A water-proof drone is being used by Australian scientists to collect the highly-treasured nasal mucus of migrating whales. The snot is rich with fresh DNA, viruses and bacteria, and is collected by a drone that hovers over the blowholes of humpback whales as they embark on their epic annual journey along Australia's east coast. From Sydney, Phil Mercer reports.

Whales, like all mammals need air, and come to the surface to breathe through a blowhole.
Vanessa Pirotta, a marine biologist at Macquarie University, says that nasal mucus indicates the health of the whale.
It is the juicy biological mixture that you see as a whale takes a breath as they surface from the water, she said. You often see that plume and it sounds like this like sounds of sharp breaths as a whale breathes because, after all, they are mammals like you and I and they have two nostrils, and it is the humpback whale that I am talking about. So as they take a breath it is a lot of lung bacteria coming out from their lungs, which we can collect to provide a snapshot of whale health.

澳大利亚科学家正在使用防水无人机来收集极为宝贵的鼻涕,这些鼻涕来源于迁徙中的鲸鱼。鼻涕里富含新鲜的DNA(脱氧核糖核酸)、病毒、细菌。鼻涕是由无人机收集的。无人机就盘旋在座头鲸上方的气孔处。收集期间正值鲸鱼们开启年度史诗级之旅——沿着澳大利亚东海岸迁徙。下面请听我台记者菲尔从悉尼发回的报道。
鲸鱼和所有哺乳动物一样,都需要空气。鲸鱼来到水面呼吸是通过气孔实现的。
瓦内萨是澳大利亚麦考瑞大学的一名海洋生物学家。她表示,鼻涕可以体现鲸鱼的健康状况。

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