Navigation Links
Krill discovered living in the Antarctic abyss
Date:2/25/2008

Scientists have discovered Antarctic krill (Euphausia superba) living and feeding down to depths of 3000 metres in the waters around the Antarctic Peninsula. Until now this shrimp-like crustacean was thought to live only in the upper ocean. The discovery completely changes scientists understanding of the major food source for fish, squid, penguins, seals and whales.

Reporting this week in the journal Current Biology, scientists from British Antarctic Survey (BAS) and the National Oceanography Centre, Southampton* (NOCS) describe how they used a deep-diving, remotely operated vehicle (RoV ) known as the Isis to film previously unknown behaviour of krill.

Professor Andrew Clarke of the British Antarctic Survey said,

While most krill make their living in the oceans surface waters, the new findings revise significantly our understanding of the depth distribution and ecology of Antarctic krill. It was a surprise to observe actively-feeding adult krill, including females that were apparently ready to spawn, close to the seabed in deep water.

Scientists have been studying krill since the Discovery expeditions of the early 20th century. Oceanographic expeditions, using a combination of echo-sound techniques and collection samples in nets, indicated that the bulk of the population of adult krill is typically confined to the top 150 metres of the water column.

The grant to purchase the Isis RoV was led by Professor Paul A Tyler of NOCS. He says,

Having the ability to use a deep-water ROV in Antarctica gave us a unique opportunity to observe the krill and also to observe the diversity of animals living at the deep-sea floor from depths of 500m down to 3500m. The importance of such observations is that, not only do we have the ability to identify species, but we can see the relations among individual species and their relationship to the ambient environment.

The discovery holds some important lessons, Clarke continued.

The behaviour of marine organisms - even quite 'primitive' ones - can be complex and more varied than we usually assume. There is still a great deal to learn about the deep sea and an important role for exploration in our attempts to understand the world we live in.


'/>"/>

Contact: Linda Capper
L.Capper@bas.ac.uk
44-012-232-21448
British Antarctic Survey
Source:Eurekalert

Related biology news :

1. Generalist bacteria discovered in coastal waters may be more flexible than known before
2. Proteins new role discovered in autoimmune disease
3. Massive dinosaur discovered in Antarctica sheds light on life, distribution of sauropodomorphs
4. Safe and effective therapy discovered for patients with protein-losing enteropathy
5. New, rare and threatened species discovered in Ghana
6. Cancer-resistant mouse discovered
7. Worlds hottest chile pepper discovered
8. New 150 million-year-old crab species discovered
9. How schizophrenia develops: Major clues discovered
10. Chloroplast f and m Thioredoxins Discovered in Nonphotosynthetic Tissues
11. New molecules discovered that block cancer cells from modifying cell DNA
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/4/2017)... , Jan. 4, 2017  For the thousands of attendees at ... global leader in connected health and biometric measurement devices and services, will ... On display in A&D Medical,s special CES Exhibit Suite ... the ongoing expansion of the company,s WellnessConnected product platform.  ... ...
(Date:12/22/2016)... , Dec. 20, 2016  As part of its longstanding ... leading personal genetics company, recently released its latest children,s book, ... The book focuses on the topics of inheritance and variation ... Standards (NGSS) taught in elementary school classrooms in the US. ... series by illustrator Ariana Killoran , whose previous book ...
(Date:12/20/2016)... Dec, 20, 2016   Valencell , the ... and STMicroelectronics (NYSE: STM), a global semiconductor ... applications, announced today the launch of a new, ... wearables that includes ST,s compact SensorTile ... biometric sensor system. Together, SensorTile and Benchmark ...
Breaking Biology News(10 mins):
(Date:1/11/2017)... , ... January 11, 2017 , ... ... are observed in clinical settings, it is becoming increasingly clear that the evolution ... on culture-based methods, the standard in the study of clinical resistance, has vastly ...
(Date:1/11/2017)... ... January 11, 2017 , ... IsoPlexis Corporation ... platform to measure the proteomic function of individual cells in patients, today announced ... grant from the National Institute on Aging of the National Institutes of Health ...
(Date:1/11/2017)... Collins, Colorado (PRWEB) , ... January 11, 2017 ... ... of dynamic aqueous plasma technology platforms, announced today that the National Science Foundation ... IIB supplement for $500,000. The funds will be used to commercialize the Symbios ...
(Date:1/11/2017)... ... January 11, 2017 , ... Advanced Polymer Monitoring Technologies (APMT) ... Bartylla will lead European initiatives for APMT’s product lines serving polymer and biopharmaceutical ... to European manufacturers and researchers. Bernhard brings significant experience in our application areas ...
Breaking Biology Technology: