珊瑚幼虫通过声波寻找安家之处(有声)
How do baby coral find a new home in the open ocean? They listen – very closely—for reef sounds.
Scientists at the University of Bristol in England had already discovered in the last few years that baby fish who live among coral use sound to find the reefs. So they decided 1 to check out the coral larvae 2 themselves. These are tiny creatures, the size of a flea 3.
The researchers created so-called choice chambers 4. When the chambers were silent, the larvae floated about, equally distributed. But when the scientists played sounds of reefs, featuring the murmurs 5 of fish and crustaceans 6, the larvae swarmed 7 towards the speakers.
What’s even more interesting – fish larvae have anatomical features for detecting sound. But coral larvae have no such features. So how are they hearing? The researchers hypothesize that the sound waves are intercepted 8 by cilia, hairlike structures, on the larvae. The work was published in the journal Public Library of Science ONE. [Mark J. A. Vermeij et al.
Here’s why this is important. Coral reefs around the world are threatened. Coral larvae could be deterred 9 by noise from human sources. So managing noise pollution could be one more angle in the effort to save the reefs
- This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
- There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
- Larvae are parasitic on sheep.幼虫寄生在绵羊的身上。
- The larvae prey upon small aphids.这种幼虫以小蚜虫为食。
- I'll put a flea in his ear if he bothers me once more.如果他再来打扰的话，我就要对他不客气了。
- Hunter has an interest in prowling around a flea market.亨特对逛跳蚤市场很感兴趣。
- The body will be removed into one of the cold storage chambers. 尸体将被移到一个冷冻间里。 来自《简明英汉词典》
- Mr Chambers's readable book concentrates on the middle passage: the time Ransome spent in Russia. Chambers先生的这本值得一看的书重点在中间：Ransome在俄国的那几年。 来自互联网
- They spoke in low murmurs. 他们低声说着话。 来自辞典例句
- They are more superficial, more distinctly heard than murmurs. 它们听起来比心脏杂音更为浅表而清楚。 来自辞典例句
- These crustaceans provide a valuable food source for some fish. 这些甲壳纲动物是某些鱼类重要的食物来源。 来自《简明英汉词典》
- When the tide ebbs it's a rock pool inhabited by crustaceans. 退潮时，它便成为甲壳动物居住的岩石区潮水潭。 来自辞典例句
- When the bell rang, the children swarmed out of the school. 铃声一响，孩子们蜂拥而出离开了学校。
- When the rain started the crowd swarmed back into the hotel. 雨一开始下，人群就蜂拥回了旅社。
- Reporters intercepted him as he tried to leave the hotel. 他正要离开旅馆，记者们把他拦截住了。
- Reporters intercepted him as he tried to leave by the rear entrance. 他想从后门溜走，记者把他截住了。