山羊比人们先前预期聪明
文章来源:未知 文章作者:enread 发布时间:2014-03-27 07:13 字体: [ ]  进入论坛
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Goats learn how to solve complicated tasks quickly and can recall how to perform them for at least 10 months, which might explain their remarkable1 ability to adapt to harsh environments, say researchers at Queen Mary University of London. Writing in the journal Frontiers in Zoology2 today (Wednesday 26 March), the scientists trained a group of goats to retrieve3 food from a box using a linked sequence of steps; first by pulling a lever(杠杆) with their mouths and then by lifting it to release the reward.
 
The goats' ability to remember the task was tested after one month and again at 10 months. They learned the task within 12 trials and took less than two minutes to remember the challenge.
 
"The speed at which the goats completed the task at 10 months compared to how long it took them to learn indicates excellent long-term memory," said co-author Dr Elodie Briefer, now based at ETH Zurich.
 
Before each learning session, some of the goats had the opportunity to watch another goat to demonstrate the task.
 
Dr Briefer added: "We found that those without a demonstrator were just as fast at learning as those that had seen demonstrations4. This shows that goats prefer to learn on their own rather than by watching others."
 
This is the first time that scientists have investigated how goats learn complex physical cognition tasks, which could explain why they are so adaptable5 to harsh environments and good at foraging6 for plants in the wild, for example.
 
Co-author Dr Alan McElligott from Queen Mary's School of Biological and Chemical Sciences, commented: "Our results challenge the common misconception that goats aren't intelligent animals -- they have the ability to learn complex tasks and remember them for a long time.
 
"This could explain why they are so successful in colonising new environments, though we would need to perform a similar study with wild goats to be sure."
 
The research was supported through a Swiss Federal Veterinary Office grant and Swiss National Science Foundation fellowship. The data was collected at Buttercups Sanctuary7 for Goats in Kent.


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1 remarkable 8Vbx6     
adj.显著的,异常的,非凡的,值得注意的
参考例句:
  • She has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。
  • These cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。
2 zoology efJwZ     
n.动物学,生态
参考例句:
  • I would like to brush up my zoology.我想重新温习一下动物学。
  • The library didn't stock zoology textbooks.这家图书馆没有动物学教科书。
3 retrieve ZsYyp     
vt.重新得到,收回;挽回,补救;检索
参考例句:
  • He was determined to retrieve his honor.他决心恢复名誉。
  • The men were trying to retrieve weapons left when the army abandoned the island.士兵们正试图找回军队从该岛撤退时留下的武器。
4 demonstrations 0922be6a2a3be4bdbebd28c620ab8f2d     
证明( demonstration的名词复数 ); 表明; 表达; 游行示威
参考例句:
  • Lectures will be interspersed with practical demonstrations. 讲课中将不时插入实际示范。
  • The new military government has banned strikes and demonstrations. 新的军人政府禁止罢工和示威活动。
5 adaptable vJDyI     
adj.能适应的,适应性强的,可改编的
参考例句:
  • He is an adaptable man and will soon learn the new work.他是个适应性很强的人,很快就将学会这种工作。
  • The soil is adaptable to the growth of peanuts.这土壤适宜于花生的生长。
6 foraging 6101d89c0b474e01becb6651ecd4f87f     
v.搜寻(食物),尤指动物觅(食)( forage的现在分词 );(尤指用手)搜寻(东西)
参考例句:
  • They eke out a precarious existence foraging in rubbish dumps. 他们靠在垃圾场捡垃圾维持着朝不保夕的生活。 来自《简明英汉词典》
  • The campers went foraging for wood to make a fire. 露营者去搜寻柴木点火。 来自辞典例句
7 sanctuary iCrzE     
n.圣所,圣堂,寺庙;禁猎区,保护区
参考例句:
  • There was a sanctuary of political refugees behind the hospital.医院后面有一个政治难民的避难所。
  • Most countries refuse to give sanctuary to people who hijack aeroplanes.大多数国家拒绝对劫机者提供庇护。
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