首页
登录
职称英语
Mass Strandings of Whales1. The tide goes out suddenly, 【T1】______ the whales
Mass Strandings of Whales1. The tide goes out suddenly, 【T1】______ the whales
游客
2024-09-12
44
管理
问题
Mass Strandings of Whales
1. The tide goes out suddenly, 【T1】______ the whales
2. Mass strandings linked to parasites
a. Evidence: Stranded animals infested with many parasites
b. Example: Worms found in the ears of dead whales
Whales rely heavily on their hearing to 【T2】______
This type of infestation can be very harmful
3. Mass strandings related to toxins or poisons
Toxins 【T3】______ from plants or animals
The whale ingests these toxins
Whether leading to stranding or not depends upon the toxin 【T4】______
4. Mass strandings caused by following their prey ashore
Example 【T5】______whales beached after following the squid ashore
Not true for most mass strandings
The animals’ stomach 【T6】______ reveal most had not been feeding
5. Mass strandings linked to humans
A growing concern: loud 【T7】______ made by humans cause strandings
Noises caused by 【T8】______ are of particular concern
6. Mass strandings related to group 【T9】______
Whales follow 【T10】______ leaders ashore [br] 【T5】
Mass Strandings of Whales
Good afternoon everyone. Well, with some of you will go out on fieldwork it’s timely that in this afternoon’s session I’ll be sharing some ideas about the reasons why groups of whales and dolphins sometimes swim ashore from the sea right onto the beach and, most often, die in what were known as "mass stranding". Unfortunately, this type of event is a frequent occurrence in some of the locations that you’ll be traveling to, [1]
where sometimes the tide goes out suddenly, confusing the animals.
However, there are many other theories about the causes of mass strandings. The first is that the behavior is linked to parasites. It’s often found that stranded animals were infested with large numbers of parasites. For instance, a type of worm is commonly found in the ears of dead whales. [2]
Since marine animals rely heavily on their hearing to navigate,
this type of infestation has the potential to be very harmful. Another theory is related to toxins, or poisons. These have also been found to contribute to the death of many marine animals. [3]
Many toxins, as I’m sure you’re aware, originate from plants, or animals.
The whale ingests these toxins in its normal feeding behavior but [4]
whether these poisons directly or indirectly lead to stranding and death, seems to depend upon the toxin involved.
Alternatively, it has also been suggested that some animals stranded accidentally by following their prey ashore in the confusion of the chase. Last year, [5]
David Thurston monitored pilot whales that beached after following the squid ashore.
However, this idea does not seem to hold true for the majority of mass strandings [6]
because examination of the animals’ stomach contents reveal that most had not been feeding as they stranded.
There were also some new theories, which link strandings to humans. [7]
A growing concern is that loud noises in the ocean cause strandings.
[8]
Noises such as these caused by military exercises are of particular concern
and have been pinpointed as the cause of some strandings of late.
[9]
A final theory is related to group behaviour,
and suggests that sea mammals cannot distinguish between sick and healthy leaders and [10]
will follow sick leaders, even to an inevitable death.
This is a particularly interesting theory since the whales that are thought to be most social—the toothed whales—are the group that strand the most frequently. The theory is also supported by evidence from a dolphin stranding in 1994. Examination of the dead animals revealed that apart from the leader, all the others had been healthy at the time of their death.
Without one consistent theory however it is very hard for us to do anything about this phenomenon except to assist animals where and when we can. Stranding networks have been established around the world to aid in rescuing animals and collecting samples from those that could not be helped. I recommend John Connor’s Marine Mammals Ashore as an excellent starting point if you’re interested in finding out more about these networks, or establishing one yourself.
选项
答案
pilot
解析
本题与跟随乌贼上岸而搁浅的鲸鱼的种类有关。录音提到,去年David Thurston检测到,有领航鲸(pilot whales)跟随乌贼上岸搁浅,故答案填入pilot。
转载请注明原文地址:https://tihaiku.com/zcyy/3755387.html
相关试题推荐
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_150[/audioFiles]Whales
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
Wemetalarge_______ofwhalesonourvoyagetoAustralia.A、flockB、schoolC、h
Suddenly,Ned_____thetrucktotheright,narrowlymissingablondteenageona
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhales
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhales
随机试题
Onedayoneofthemsaidtotheking."Aftermuchthoughtandstudy.Ihavefoun
横向定位轴线编号用阿拉伯数字,()依次编号。A.从右向左 B.从中间向两侧
钢管混凝土拱应采用()施工,由拱脚向拱顶对称均衡地连续压注一次完成。A、泵送降压
首选用于解救重症肌无力的药物是A:山莨菪碱 B:新斯的明 C:东莨菪碱 D
2020年,F省全年粮食产量502.32万吨,比上年增加8.42万吨,增长1.7
某单层公共建筑面积为3000m2,设有预作用自动喷水灭火系统保护,系统的设计参数
在Excel中可用组合键“Shift+Ctrl+;”输入当前的时间。( )
可用于晕车晕船,具有解表祛湿和中功能的药物是()A.参苏丸 B.九味羌活
下列哪种药物对肝有毒性A.苯巴比妥 B.地西泮 C.甲喹酮 D.氯丙嗪
根据《建筑安装工程费用项目组成》(建标[2013]44号文),建筑安装工程生产工
最新回复
(
0
)