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標題: [亞洲] 新西蘭海域發現全球最大28厘米長深海巨蝦 [打印本頁]

作者: hukusra 時間: 2012-2-4 01:44 PM 標題: 新西蘭海域發現全球最大28厘米長深海巨蝦

世界最大的深海蝦(網頁截圖)

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　　英國《每日郵報》2月2日報導，一個英國探險隊日前在紐西蘭北部海域6000米下的深水區，發現世界最大的深海蝦，它們體長可達28釐米。

　　這種深海蝦被稱為「超級巨人」，是一種片腳類生物。大多數片腳類生物通常只有2到3釐米長，但英國阿伯丁大學探險隊發現的這種蝦體長卻是其他同類的十多倍。6 b c& e |0 h: y& {4 q2 m

　　探險隊領隊艾倫·賈米森(Alan Jamieson)說，他們想利用潛水攝像機和大型羅網尋找深海獅子魚，這種水下生物自從20世紀50年代以來就無人見過。他說：「起初我們還以為發現了獅子魚，但仔細檢查後發現那是一種片腳類生物，體型大得超乎我們想像，就像發現一尺長的蟑螂一樣。」
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　　研究人員稱，此前從未在6000多米深的水域見過這種大蝦。20世紀80年代初期，美國科學家曾發現過類似片腳類生物。紐西蘭國家水域和大氣研究所研究員阿什利·勞登(Ashley Rowden)說：「這種大蝦的發現證明，我們對紐西蘭深水中的生命瞭解得不夠。」
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作者: vandas 時間: 2012-2-4 02:17 PM

Scientists on an expedition to sample a deep-sea trench got a surprise when their traps brought back seven giant crustaceans glimpsed only a handful of times in human history.

The "supergiant" amphipods are more than 20 times larger than their typical crustacean relatives, which are generally less than a half-inch (1 centimeter) long, and thrive in lakes and
oceans around the world. They are sometimes called the "insects of the sea."

"We pulled up the trap, and lying among the fish were these absolutely massive amphipods, and there was no inkling whatsoever that these things should be there," said Alan Jamieson, a lecturer at the University of Aberdeen in Scotland, and leader of the expedition that turned up the fantastical creatures in November 2011.

The largest of the seven specimens was about 11 inches (28 cm) long.
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"They actually don't feel real," Jamieson told OurAmazingPlanet. "They feel like plastic toys. They have a waxy texture to them."
[See image of the supergiant crustacean.]

The pale, leggy creatures were found 4 miles (6 kilometers) down in the Kermadec Trench, off the northeast coast of New Zealand, one of the2 I8 I4 |- P" O
deepest trenches on Earth.

In addition to the animals captured in the trap, a seafloor camera more than a mile (2 km) away spied at least nine supergiant amphipods. It's not clear why so many of the typically elusive creatures were in the area. A week later, when the expedition returned to the same spot, there was no sign of the supergiant amphipods, which was "very, very strange," Jamieson said.

It appears the Aberdeen expedition has retrieved the largest complete specimen ever collected. (In 1983, an albatross regurgitated a supergiant amphipod, that, not surprisingly, was in poor shape. Researchers estimated at the time that, when alive, the creature would have been 13 inches (34 cm) long.)
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Supergiant amphipods (Alicella gigantea) were first discovered in 1899, when a trawling expedition turned up two specimens from the Atlantic Ocean. The species wasn't seen again for nearly 100 years. In the 1970s, scientists photographed the oversized creatures in the northern Pacific Ocean, hundreds of miles north of Hawaii.tvb now,tvbnow,bttvb* _4 z1 f- f# Y
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Then in the 1980s, scientists managed to bring back a few specimens of the giant crustaceans from the same area.: O0 a1 _! W1 S, U
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"Nobody has ever really mentioned them since," Jamieson said. "They're one of these strange deep-sea anomalies."5.39.217.76! J2 L! [0 P" q2 x% N

Although the amphipod find was exciting, the expedition's true quarry was a
deep-sea snailfish
that has only been sampled once before, in 1952.

"Nobody has ever caught one since," Jamieson said. Yet in among the weird amphipods? Seven snailfish.
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"To do what we wanted to do we really just needed one fish, so to get seven fish was amazing -- and to get seven supergiants is incredible," Jamieson said.tvb now,tvbnow,bttvb6 R5 B3 [- f+ G( e+ x% {8 P, F

"It was a pretty good day, let's put it that way," he added.tvb now,tvbnow,bttvb, d' @7 ]$ v  w, A& `' W
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The scientists are mounting a return sampling expedition to the same swath of deep sea off the coast of New Zealand in a week.

Gallery: Creatures from the Census of Marine Life
Dangers in the Deep: 10 Scariest Sea Creatures
Gallery: Unique Life at Antarctic Deep-Sea Vents

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作者: vandas 時間: 2012-2-4 02:25 PM

[youtube]NGvXPwkr2OY[/youtube]

作者: hamtu5168 時間: 2012-2-5 04:06 PM

英探險隊紐西蘭海域大發現　世界最大深海蝦曝光！
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英國探險隊日前在紐西蘭北部海域的深水區，發現世界最大的深海蝦。〔圖／取自網路〕
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國際中心／綜合報導 5.39.217.76. k: Q" ]( [; V/ h5 A
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日前，一支英國探險隊在紐西蘭北部海域6000尺下的深水區，發現世界最大的深海蝦，它們體長可長達28釐米。探險隊員起初還以為他們發現了獅子魚，經過一番仔細觀察，發現那是一種片腳類生物，體型大得就像發現一尺長的蟑螂一樣。5 E0 d( I" X* O! x# `) X
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據英國《每日郵報》報導，此深海蝦被稱為「超級巨人」，是一種片腳類生物。通常片腳類生物身長都只有2到3釐米長，但英國的探險隊驚訝地發現，這次發現的蝦體長居然是其他同類的十幾倍。
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研究人員稱表示，他們從未在6000多尺深的水域見過如此大的蝦子。紐西蘭國家水域和大氣研究所研究員Ashley Rowden則表示，這種大蝦的發現，證明了人們對紐西蘭深水中的生命了解得並不透徹。tvb now,tvbnow,bttvb8 d) Q# J, w; I2 E
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作者: johnwood62 時間: 2012-2-5 05:01 PM

really? amazing

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