英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

科学美国人60秒 SSS 鸟喙形状不仅仅取决于饮食

时间:2020-03-10 23:47来源:互联网 提供网友:nan   字体: [ ]
特别声明:本栏目内容均从网络收集或者网友提供,供仅参考试用,我们无法保证内容完整和正确。如果资料损害了您的权益,请与站长联系,我们将及时删除并致以歉意。
    (单词翻译:双击或拖选)

This is Scientific American's 60-second Science, I'm Annie Sneed.

这里是科学美国人——60秒科学系列,我是安妮·斯尼德。

The beak1 shapes of different species of Galapagos finches played an important part in Darwin's conception of natural selection.

加拉帕戈群岛不同雀类的鸟喙形状在达尔文的自然选择学说中扮演了重要角色。

"In our field there is this presumption2 that the beak shape ... in birds is quite correlated with what they eat and how they eat it—so, their feeding ecologies."

“我们的研究领域存在这样一种假设:鸟喙形状与其食物及进食方式息息相关,也就是与它们的摄食生态有关。”

Guillermo Navalón, a PhD student at the University of Bristol in the U.K. and a co-author of a new study that found that the connection between beak shape and diet isn't as tight as we thought. The study is in the journal Evolution.

英国布里斯托尔大学的博士生吉尔莫·纳瓦隆说到,他也是一项新研究的作者之一,该研究发现,鸟喙形状与饮食之间的联系并不像我们我们想象的那样紧密。这项研究发表在《进化》期刊上。

Navalón and his colleagues analyzed3 photographs of museum specimens4 of 176 bird skulls5. They looked at beak shape and size in almost all of the orders of modern birds and compared the beaks6 with other factors, such as feeding behavior and body size. And they found that the beak shape was indeed somewhat tied to what birds feed on and how they eat it—but the relationship was actually surprisingly weak, accounting7 for just 12 percent of beak shape variation.

纳瓦隆和同事分析了博物馆中176个鸟类头骨标本的照片。他们研究了几乎所有现代鸟的鸟喙形状和大小,并将鸟喙与摄食行为及体型大小等其它因素进行了比较。他们发现,鸟喙形状的确在某种程度上与鸟类的饮食和进食方式有关——但这种关联实际上出奇地微弱,只在鸟喙形状变化因素中占12%。

"The explanation that we extract from there is that the beaks are basically surrogate hands in the birds. They are used for a plethora8 of different functions beyond feeding ecology. Like the beak in general in birds have many other functions, so they use it for display, nest construction, singing, thermoregulation in some cases like toucans9 or like hornbills ... so there is like a lot of factors that probably have intervened in the evolution of beaks in birds."

“我们从中获得的解释是,鸟喙基本上是鸟类的‘替代手’。除了摄食生态之外,鸟喙还有其它多种用途。正如鸟喙通常还有许多其它功能一样,鸟会用鸟喙来进行展示、筑巢、唱歌,巨嘴鸟或犀鸟等也会用鸟喙来调节温度,因此,可能有许多因素干预了鸟喙的进化。

Thanks for listening for Scientific American — 60-Second Science. I'm Annie Sneed.


点击收听单词发音收听单词发音  

1 beak 8y1zGA     
n.鸟嘴,茶壶嘴,钩形鼻
参考例句:
  • The bird had a worm in its beak.鸟儿嘴里叼着一条虫。
  • This bird employs its beak as a weapon.这种鸟用嘴作武器。
2 presumption XQcxl     
n.推测,可能性,冒昧,放肆,[法律]推定
参考例句:
  • Please pardon my presumption in writing to you.请原谅我很冒昧地写信给你。
  • I don't think that's a false presumption.我认为那并不是错误的推测。
3 analyzed 483f1acae53789fbee273a644fdcda80     
v.分析( analyze的过去式和过去分词 );分解;解释;对…进行心理分析
参考例句:
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程,因为对他来说,爱是个不可分析的迷。 来自《简明英汉词典》
4 specimens 91fc365099a256001af897127174fcce     
n.样品( specimen的名词复数 );范例;(化验的)抽样;某种类型的人
参考例句:
  • Astronauts have brought back specimens of rock from the moon. 宇航员从月球带回了岩石标本。
  • The traveler brought back some specimens of the rocks from the mountains. 那位旅行者从山上带回了一些岩石标本。 来自《简明英汉词典》
5 skulls d44073bc27628272fdd5bac11adb1ab5     
颅骨( skull的名词复数 ); 脑袋; 脑子; 脑瓜
参考例句:
  • One of the women's skulls found exceeds in capacity that of the average man of today. 现已发现的女性颅骨中,其中有一个的脑容量超过了今天的普通男子。
  • We could make a whole plain white with skulls in the moonlight! 我们便能令月光下的平原变白,遍布白色的骷髅!
6 beaks 66bf69cd5b0e1dfb0c97c1245fc4fbab     
n.鸟嘴( beak的名词复数 );鹰钩嘴;尖鼻子;掌权者
参考例句:
  • Baby cockatoos will have black eyes and soft, almost flexible beaks. 雏鸟凤头鹦鹉黑色的眼睛是柔和的,嘴几乎是灵活的。 来自互联网
  • Squid beaks are often found in the stomachs of sperm whales. 经常能在抹香鲸的胃里发现鱿鱼的嘴。 来自互联网
7 accounting nzSzsY     
n.会计,会计学,借贷对照表
参考例句:
  • A job fell vacant in the accounting department.财会部出现了一个空缺。
  • There's an accounting error in this entry.这笔账目里有差错。
8 plethora 02czH     
n.过量,过剩
参考例句:
  • Java comes with a plethora of ready-made types.Java配套提供了数量众多的现成类型。
  • A plethora of new operators will be allowed to enter the market.大批新的运营商将获准进入该市场。
9 toucans 1bed8326dd2ce6bc3b3e4bb405c5a491     
n.巨嘴鸟,犀鸟( toucan的名词复数 )
参考例句:
  • Against it, parakeets and toucans and blue-winged macaws swoop. 晨光下,小鹦鹉、巨嘴鸟和翅膀鲜蓝的金刚鹦鹉展翼翱翔。 来自互联网
  • Toucans also have a narrow, feather-like tongue. 巨嘴鸟也有狭窄部份,像羽毛一样的舌。 来自互联网
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   科学美国人60秒  英语听力  sss
顶一下
(0)
0%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴