时间:2019-02-14 作者:英语课 分类:2018年科学美国人1月


英语课

Baby Bats Can Learn Different Dialects


Bats are sophisticated communicators. And not just when they’re in vampire 1 form. New research finds that Egyptian fruit bats actually have regional dialects, depending on the bat chatter 2 that surrounds them as they grow up. The study is in the journal PLOS Biology.蝙蝠是复杂的传播者,而不只是当他们在吸血时才沟通。新的研究发现,埃及果蝠实际上有自己的方言,这取决于它们长大后跟蝙蝠群的交流有关。 这项研究结果发表在“PLOS生物学”期刊上。


Among humans, one person’s howdy is another one’s g’day. Wild populations of bats also display group-specific vocalizations. But how do these vocal 3 characteristics arise? Do they reflect innate 4, genetic 5 differences or are they learned? And if bat accents are acquired, who are these furry 6 fliers imitating? Their parents? Or their roost-mates?


在人类中,一个人的热情是另一个人的天。蝙蝠的野生种群也显示着这种特定群体的发声。但是,这些声乐特征是如何产生的呢?他们是否反映了先天的遗传差异特性,或者他们学到了什么呢?如果蝙蝠的口音被获得到,那么这些毛茸茸的飞行员是在模仿谁呢?他们的父母吗?还是他们的同伴们?


To find out, Yossi Yovall at Tel Aviv University and his colleagues captured 15 pregnant fruit bats and divided them into three groups, each of which was housed in its own separate box. The mothers gave birth inside these boxes and their babies, called pups, lived there for a full year. During that time, the researchers exposed the pups to a select symphony of bat sounds. Fruit bats in the wild are reared in colonies that contain dozens to thousands of individuals, so they’re used to being surrounded by a cacophony 7 of calls and other vocal communiques.


 

为了找到这个答案,特拉维夫大学的Yossi Yovall和他的同事们捕获了15只怀孕的果蝠,并将它们分成三组,每组分别安置在独立的盒子里。母亲果蝠在这些箱子里生了小果蝠,并在这里住了一整年。在那段时间里,研究人员将这些幼仔暴露在一些特定的蝙蝠声音中。在野外的果蝠在含有几十到几千个人的地域中饲养,所以他们习惯于被呼声和其他声音包围。


For one of the boxes, Yovall and his team exposed the young batlings to a selection of squeaks 8 that were biased 9 toward the higher frequencies. Pups in the second box heard lower-pitched peeps. And the third box got a random 10 sampling of fruit bat hits that was heavy on the mid-range frequencies but also included those at either end of the aural 11 spectrum 12.“And what we found is that they were influenced by the playback that they heard.”Yossi Yovall.


对于其中的一个盒子,Yovall和他的团队将小果蝠暴露在一些较高频率的吱吱声中。在第二个箱子里的小果蝠听到低音。而第三个盒子在随机取样的果蝠中,在中频范围内很重,但也包括在听觉范围的两端。“我们发现,他们受到他们所听到的回放声的影响。” Yossi Yovall说。


“So the control group was using a vocal repertoire 13 that was identical to their mothers and identical to fruit bats in the colony here in Israel. But the two manipulated groups were using different dialects...we actually were able to create three different groups of fruit bats with three different dialects in the lab.”


“所以对照组使用了一个和他们的母亲完全一样的声乐曲目,和以色列区域的果蝠相同。 但是,这两个被操纵的小组使用了不同的方言......实际上我们能够在实验室里用三种不同的组合方法创造出三组不同的方言。


Of course, birds are famous for their songs. Which the males learn from tutors, typically their dads. But Yovall says when it comes to vocal learning, bats march to a different drummer.


当然了,鸟儿以他们的歌闻名。雄鸟师从导师,通常是向他们的爸爸学习。但是Yovall说,当谈到人声学习时,蝙蝠可以学到不同的声音。


“Here we show that even though the pups were with their mothers, they were exposed to their mother’s normal repertoire, they were still influenced by the background vocalizations that they heard. Now this is probably extremely reasonable in the case of bats because bats roost in these caves with many hundreds of individuals…we believe that this process, which we call crowd vocal learning, because you learn from the entire crowd, is relevant for many other animals that live in crowded colonies.”


“在这里,我们表明,即使幼崽与他们的母亲接触到正常曲目,他们仍然受到他们听到的背景发声的影响。在蝙蝠的这种情况下,可能是非常合理的,因为蝙蝠在这些洞穴中栖息着......我们相信这个过程,我们称之为人群声乐学习,因为你从整个人群中学习,对许多其他动物也会出现类似情况”。


As the researchers note in their paper, this sort of social learning is sometimes called “culture.” Even if you’re living in a cave.


研究人员在他们的论文中指出,这种社会学习有时被称为“文化”,即使你生活在一个山洞里,也会受到文化的影响和熏陶。



n.吸血鬼
  • It wasn't a wife waiting there for him but a blood sucking vampire!家里的不是个老婆,而是个吸人血的妖精!
  • Children were afraid to go to sleep at night because of the many legends of vampire.由于听过许多有关吸血鬼的传说,孩子们晚上不敢去睡觉。
vi./n.喋喋不休;短促尖叫;(牙齿)打战
  • Her continuous chatter vexes me.她的喋喋不休使我烦透了。
  • I've had enough of their continual chatter.我已厌烦了他们喋喋不休的闲谈。
adj.直言不讳的;嗓音的;n.[pl.]声乐节目
  • The tongue is a vocal organ.舌头是一个发音器官。
  • Public opinion at last became vocal.终于舆论哗然。
adj.天生的,固有的,天赋的
  • You obviously have an innate talent for music.你显然有天生的音乐才能。
  • Correct ideas are not innate in the mind.人的正确思想不是自己头脑中固有的。
adj.遗传的,遗传学的
  • It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
adj.毛皮的;似毛皮的;毛皮制的
  • This furry material will make a warm coat for the winter.这件毛皮料在冬天会是一件保暖的大衣。
  • Mugsy is a big furry brown dog,who wiggles when she is happy.马格斯是一只棕色大长毛狗,当她高兴得时候她会摇尾巴。
n.刺耳的声音
  • All around was bubbling a cacophony of voices.周围人声嘈杂。
  • The drivers behind him honked,and the cacophony grew louder.后面的司机还在按喇叭,且那刺耳的声音越来越大。
n.短促的尖叫声,吱吱声( squeak的名词复数 )v.短促地尖叫( squeak的第三人称单数 );吱吱叫;告密;充当告密者
  • The upper-middle-classes communicate with each other in inaudible squeaks, like bats. 那些上中层社会的人交谈起来象是蚊子在哼哼,你根本听不见。 来自辞典例句
  • She always squeaks out her ideas when she is excited. 她一激动总是尖声说出自己的想法。 来自互联网
a.有偏见的
  • a school biased towards music and art 一所偏重音乐和艺术的学校
  • The Methods: They employed were heavily biased in the gentry's favour. 他们采用的方法严重偏袒中上阶级。
adj.随机的;任意的;n.偶然的(或随便的)行动
  • The list is arranged in a random order.名单排列不分先后。
  • On random inspection the meat was found to be bad.经抽查,发现肉变质了。
adj.听觉的,听力的
  • The opera was an aural as well as a visual delight.这部歌剧对于听觉和视觉都是一种享受。
  • You can use these tapes as aural material.你可以把这些磁带当作听力材料。
n.谱,光谱,频谱;范围,幅度,系列
  • This is a kind of atomic spectrum.这是一种原子光谱。
  • We have known much of the constitution of the solar spectrum.关于太阳光谱的构成,我们已了解不少。
n.(准备好演出的)节目,保留剧目;(计算机的)指令表,指令系统, <美>(某个人的)全部技能;清单,指令表
  • There is an extensive repertoire of music written for the flute.有很多供长笛演奏的曲目。
  • He has added considerably to his piano repertoire.他的钢琴演奏曲目大大增加了。
学英语单词
1-anthrylamine
adenomammectomy
aggregate fund in flow out flow
aibs
alyx
amount of precipitation
analysis of stomach
area pattern
backfeed
black rat snake
cancellation of adoption
Castelluccio del Sauri
ch'ang tzu
comitragedy
cross-reaction
cross-road
culture-flask
deloach
derganil
dual basing-point system
Edline
electric resistance humidifier
equitable conversion
equitization
factor modulus
feminine product
fenbufen
ferric pyrophosphate
field rivetting
first party dma
flanged hose coupling
flapstop
floruits
fog quenching
fractalizes
fusiform excision
fuzzy decision-tree
Good lenses, bad frames
group reinforcement
haubner
Hognestad's syndrome
honey granulation
husker with hydraulic roll-engagement
hyetal map
ICMRT
ill-judging
Indian mongoose
innerspace
interlocking matrix
joint sealing materials
king of beasts
kingoonyas
lamp-shades
langot
languorous
large coal
Lerne
leucomatous
make someone's hair stand on make someone's hair curl
mam-cu-sak
mechanical oil valve
methylethylcellulose
minimal detectable activity
Morocco agencies
morphometric cytology
multiple-beam radar
out of play
paper crop
paysant
peach pyralid moth
pinballed
polyploid state
positive stripe
presser beams
prociphilus tessellatuss
quadrillions
raw wound
Red Horde
repagination
right-cut tool
roll mandrel
rynesh
sandouville
scanning tunneling microscopy
script girl
serial sectioning
shakeel
ship communications
shop bell
smutmonger
social compensation hypothesis
spinae pubis
starter main shaft gear
take advantage of the loophole
tannenite (emplectite)
Tanner stages
tumor disease
uniflux tray S
vertical infection
walking boots
xoanon
York, C.