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
Holy Squid! Photos Offer First Glimpse of Live Deep-Sea Giant Like something straight out of a Jules Verne novel, an enormou
Holy Squid! Photos Offer First Glimpse of Live Deep-Sea Giant Like something straight out of a Jules Verne novel, an enormou
admin
2010-08-04
41
问题
Holy Squid! Photos Offer First Glimpse of Live Deep-Sea Giant
Like something straight out of a Jules Verne novel, an enormous tentacle creature looms out of the inky blackness of the deep Pacific waters.
But this isn’t science fiction. A set of extraordinary images captured by Japanese scientists mark the first-ever record of a live giant squid (Architeuthis) in the wild.
The animal--which measures roughly 25 feet (8 meters) long--was photographed 2,950 feet (900 meters) beneath the North Pacific Ocean. Japanese scientists attracted the squid toward cameras attached to a baited fishing line.
The scientists say they snapped more than 500 images of the massive cephalopod before it broke free after snagging itself on a hook. They also recovered one of the giant squid’s two longest tentacles, which severed during its struggle.
The photo sequence, taken off Japan’s Ogasawara Islands in September 2004, shows the squid homing in on the baited line and enveloping it in "a ball of tentacles."
Tsunemi Kubodera of the National Science Museum in Tokyo and Kyoichi Mori of the Ogasawara Whale Watching Association report their observations this week in the journal Proceedings of the Royal Society B.
"Architeuthis appears to be a much more active predator than previously suspected, using its elongated feeding tentacles to strike and tangle prey," tile researchers write.
They add that the squid was found feeding at depths where no light penetrates even during the day.
Giant Breakthrough
Despite people’s fascination with this deep-sea behemoth, the giant squid’s life and habits have remained largely a mystery. The little information known has been mostly based on dead and dying specimens that were caught by commercial fishing boats or washed ashore.
The mysterious creature has inspired countless sea monster tales and has been the subject of various scientific expeditions.
Since the mid 1990s there have been a number of research trips in search of giant squid. Cameras attached to deep-diving subs or sperm whales have been used to try to .capture the elusive animals on film, but without success.
The Japanese researchers used sperm whales as guides to help them pinpoint likely giant squid haunts. Over the years whalers have reported finding a high number of large squid beaks in the mammals’ stomachs, pegging sperm whales as primary predators of large squid.
The images are generating considerable excitement among squid experts.
"I think it’s wonderful that we’ve finally got a picture of a living giant squid," said Richard Ellis, a research associate at the American Museum of Natural History in New York and author of The Search for the Giant Squid.
"I thought it would only be a matter of time before someone got images of Architeuthis," he added.
"After all, it’s not an endangered species, not even all that rare, and it’s one of the largest of all invertebrates. So the Japanese film finaly breaks through and renders the statement ’nobody has ever seen a living giant squid’ inoperative."
Squid expert Martin Collins of the British Antarctic Survey based in Cambridge. England, says the new images are a "fantastic" achievement.
The marine biologist says he was skeptical that a dedicated giant squid hunt would succeed. He thought the first wild sighting would probably come by accident.
"Fair play to these guys who’ve made the effort, gone out there and looked in what they thought was a good area, and found it," be said.
Hunting for Clues
Collins is especially interested in clues the images might provide to the way giant squid swim and hunt in the deep ocean.
"Seeing the animals on film gives you a tremendous insight into how they live down there," he said. "It shows they are pretty active animals, and that answers a big question that’s been out there for some time."
Collins says there were two competing schools of thought among giant squid experts.
"One was the idea that [giant squid] were fairly inactive and just drifted around, dangling their tentacles below them like fishing lures to catch what came by," he said.
"The other theory was that they were actually quite active. This new evidence supports this, suggesting they are active predators which can move reasonably quickly."
"The efforts the squid went to untangle itself [from the baited fishing line] also shows they are capable of quite strong and rapid movement," he added.
The study team reports that the severed tentacle repeatedly gripped the boat deck and crew after it was hauled aboard. The squid’s tentacles are armed with suckers, each ringed with tiny teeth to help snare prey.
Measuring 18 feet (5.5 meters) long, analysis of the tentacle confirmed it came from a giant squid and allowed the researchers to estimate the total length of the animal.
But the researchers caution that their data assume the tentacle was severed at its base. If not, the squid may have been considerably larger. The longest giant squid on record measured 59 feet ( 18 meters), including its two elongated tentacles.
Shedding Light on Giant Squid
Giant squid, along with their close cousins colossal squid (Mesonychoteuthis), have the largest eyes of any animal.
"Giant squid do have particularly large eyes, which would suggest vision is important to them. Having a large eye isn’t unusual in deep-sea animals--you see it quite often in fish."
The fact that the animal caught on film was swimming in total darkness suggests the species detects prey using alternative light sources. "The only light down there is likely to be light produced by other animals," said Collins of the British Antarctic Survey.
The Japanese team thinks that research techniques similar to their own could be used to bring about more close encounters with giant squid. Ellis of the American Museum of Natural, History agrees.
"I’m sure we can learn a lot from an analysis of these images," he said. "And now that we have an idea of where to look for [the squid], we will undoubtedly get more pictures."
The observations by Tsunemi Kubodera and Kyoichi Mori was reported in the journal Proceedings of Royal Society B.
选项
A、Y
B、N
C、NG
答案
A
解析
由题干中的信息词Tsunemi Kubodera and Kyoichi Mori定位原文第六段,可知题干表述正确。
转载请注明原文地址:https://jikaoti.com/ti/RxtFFFFM
0
大学英语四级
相关试题推荐
ThewayoflifeinGreekcity-statesremainedmostlythesameforalongtime.Peopleinthe【B1】______centerlivedinlowapartm
ThewayoflifeinGreekcity-statesremainedmostlythesameforalongtime.Peopleinthe【B1】______centerlivedinlowapartm
ShouldWeEatLivingFoodsorDeadFoods?Whyshouldthisquestionarise?BecausethepeoplesofAmericaandtheworlds
MichaelJordanisanAmerican【B1】______basketballplayerintheNBA,wholedtheChicagoBullstofiveNBA【B2】______.Jordanwas
Betweenabout1910and1930,newartisticmovementsinEuropeanartweremakingthemselvesfeltintheUnitedStates.Americana
Forthispart,youareallowedthirtyminutestowriteacompositiononthetopicOpportunityandSuccess.Youshouldwriteatl
TeainBritainTea,thatmostessentialEnglishdrinks,isarelativelatecomertoBritishshores.Althoughthecustomofd
A、ThemanwantstogotoTokyo.B、ThemanwantstogotoShanghai.C、Thereare4flightstoTokyofortherestoftheday.D、The
A、GotoGermanytolivewithhisfriend.B、ReturntoGermanyforfurtherstudy.C、SetupacompanyinShanghai.D、Findajobin
随机试题
肢体语言
患者,女,32岁,5天前出现发热、乏力、恶心、食欲缺乏,查体:巩膜轻度黄染,肝肋下lcm,质软,ALT760U/L,总胆红素54mmol/L,考虑该患者为“病毒性肝炎”。入院后查抗一HAV—IgM(+),乙肝五项检查中,抗一HBs(+),其余均为(-
在施工中发生危及人身安全的紧急情况时,作业人员有权立即停止作业或者在采取必要的应急措施后撤离危险区域。()
《中华人民共和国水土保持法》规定,国家鼓励和支持在山区、丘陵区、风沙区以及容易发生水土流失的其他区域,采取下列有利于水土保持的措施()。
银行间债券市场交易制度中,()是指中国人民银行根据规定遴选符合条件的债券二级市场参与者作为中国人民银行的对手方,与之进行债券交易,从而配合中国人民银行货币政策目标的实现。
某企业生产甲、乙两种产品,耗用直接原材料15万元,车间管理人员薪酬3万元,车间设备计提折旧9万元,各项生产费用按照工时在甲、乙产品之间分配,甲、乙产品耗费工时分别为100小时、50小时,则甲产品应分配的生产费用为()万元。
某酒厂2018年2月研发生产一种新型粮食白酒800千克,成本为20万元,作为礼品赠送品尝,没有同类售价。已知粮食白酒的成本利润率为10%,粮食白酒适用的消费税比例税率为20%,定额税率为0.5元/500g,则该批白酒应纳消费税税额为()万元。
Whichofthefollowingstatementsabouttask-basedlanguageteachingisNOTtrue?
横队
Whichoneofthefollowingfiveisleastliketheotherfour?Cat—Lion—Dog—Turtl
最新回复
(
0
)