首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Mass Strandings of Whales 1. The tide goes out suddenly,【T1】________the whales 2. Mass strandings linked to parasites
Mass Strandings of Whales 1. The tide goes out suddenly,【T1】________the whales 2. Mass strandings linked to parasites
admin
2023-02-08
35
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【T5】________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
【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 travelling to, 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. 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. 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 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, 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 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. A growing concern is that loud noises in the ocean cause strandings. Noises such as these caused by military exercises are of particular concern and have been pinpointed as the cause of some strandings of late.
A final theory is related to group behaviour, and suggests that sea mammals cannot distinguish between sick and healthy leaders and 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://kaotiyun.com/show/R2SD777K
0
专业英语四级
相关试题推荐
Here’sacommonscenariothatanynumberofentrepreneursfacetoday:you’retheCEOofasmallbusinessandthoughyou’remakin
Here’sacommonscenariothatanynumberofentrepreneursfacetoday:you’retheCEOofasmallbusinessandthoughyou’remakin
Here’sacommonscenariothatanynumberofentrepreneursfacetoday:you’retheCEOofasmallbusinessandthoughyou’remakin
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
SowhyisGooglesuddenlysointerestedinrobots?That’sthequestioneveryone’saskingafteritemergedthismonththatthein
SowhyisGooglesuddenlysointerestedinrobots?That’sthequestioneveryone’saskingafteritemergedthismonththatthein
Thepolitician’srecordwhileinoffice,though(i)________,hardlyaccountsforherhighstandingthreedecadeslater—astandin
Theonewordthatsumsuptheattitudeofthesilentfilmmakerisenthusiasm,conveysmoststronglybeforeformulastookshapea
PASSAGETWOWhatdoestheauthorthinkoftherulesannouncedsofar?
随机试题
要在Word2010文档中创建表格,应使用()
简述公司章程的法定性的表现。
古罗马教育家昆体良的教育著作是
A.发病急剧,疼痛剧烈,压痛部位较深,表面红肿不明显B.压痛部位浅,局部炎性表现明显C.疼痛部位在关节,浅表关节早期可出现肿胀,多为游走性关节疼痛D.发病缓慢,很少出现红肿和穿破骨皮质,X线可见多量骨质增生E.X线片表现为干骺端囊性变,周围有硬化骨
《工业炉砌筑工程施工及验收规范》对工业炉砌筑施工做了规定,以下正确的是()。
两种学习之间发生相互干扰、阻碍的迁移称为()
“知识并不是对现实世界的绝对正确的表征,而只是一种关于各种现象的较为可靠的解释或假设。”持这种知识观的是()。
关于宪法效力的说法,下列选项中正确的是:
Joe:Wehaven’tgottogetherforalongtime.Howaboutlunchnextweek?Nancy:I’mprettytiedupallnextweek.Howaboutwepl
通用/专用词
最新回复
(
0
)