Navigation Links
Surviving without ice
Date:9/13/2012

With sea ice in the Arctic melting to record lows in summer months, marine animals living there face dramatic changes to their environment. Yet some crustaceans, previously thought to spend their entire lives on the underside of sea ice, were recently discovered to migrate deep underwater and follow ocean currents back to colder areas when ice disappears.

"Our findings provide a basic new understanding of the adaptations and biology of the ice-associated organisms within the Arctic Ocean," said Mark Moline, director of the University of Delaware's School of Marine Science and Policy in the College of Earth, Ocean, and Environment. "They also may ultimately change the perception of ice fauna as imminently threatened by the predicted disappearance of perennial sea ice."

Moline, Jrgen Berge of the University of Troms and Norwegian colleagues found the crustaceans, specifically amphipods Apherusa glacialis that resemble small shrimp, well below sea ice during a rare winter, nighttime research expedition to the Fram Strait and Eurasian section of the Arctic Ocean. They determined that the crustaceans migrate downward as part of their life cycles and ride deep-ocean currents toward the North Pole.

The crustaceans' travels appear to be an adaptive trait that both increases survival during ice-free periods and enables them to be retained in the Arctic Ocean.

The scientists refer to their findings as the "Nemo hypothesis," based on an analogy to the Disney movie Finding Nemo in which Nemo's father uses deep-ocean currents for transportation. In a similar mechanism, Arctic crustaceans detached from melting sea ice move into depths where the northernmost branch of the Gulf Stream System effectively transports them back into the Arctic Ocean.

Previously, these organisms were generally considered to be passively exported either out the Fram Strait or down to inhabitable depths when released from melting sea ice either
'/>"/>

Contact: Andrea Boyle Tippett
aboyle@udel.edu
302-831-1421
University of Delaware
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Weakness can be an advantage in surviving deadly parasites, a new study shows
2. How to make high-end perfumes without whale barf
3. Feeding without the frenzy
4. Plant growth without light control
5. Production of chemicals without petroleum
6. NPointer from Neurotechnology Uses Hand Gestures to Control and Navigate Computer Programs Without a Mouse or Touchpad
7. Survival without water: A key trait of an aquatic invader to spread
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Surviving without ice
(Date:7/9/2014)... delivered by Caesarean section have a different intestinal flora than ... why this is the case and what it means for ... Medical Sciences therefore decided to scrutinise the impact of birth ... of newborn mouse pups. , The study ... lower number of cells that strengthen the immune system, says ...
(Date:7/9/2014)... hunts in Indiana state parks have helped restore the ... by overabundant populations of white-tailed deer, a Purdue study ... associate professor of forest ecology, found that a 17-year-long ... in state parks has successfully spurred the regrowth of ... browsing deer. , Jenkins said that while hunting ...
(Date:7/9/2014)... (July 9, 2014) Emerging fungal pathogens pose ... parasitic group, causing population declines of amphibians, bats, ... University of South Florida published in the prestigious ... acquire behavioral or immunological resistance to a deadly ... , "Acquired resistance is important because it ...
Breaking Biology News(10 mins):Mouse study: Natural birth may strengthen the immune system 2Hunting gives deer-damaged forests in state parks a shot at recovery 2USF study: Amphibians can acquire resistance to deadly fungus 2
... an important discovery in the interdisciplinary study of split-brain research. ... left and right hemispheres. Split-brain research has been conducted ... processing is largely located in the left side of the ... an area processed by the right side of the ...
... between partners is a fundamental requisite in agricultural biotech ... from a four year study into what built or ... In a special supplement published in the UK-based journal ... from the Sandra Rotman Centre at the University Health ...
... been considered a major risk factor for cardiovascular disease. ... but the mechanisms of how arteries stave off hardening ... Perelman School of Medicine, University of Pennsylvania, Wistar Institute, ... the protein apolipoprotein E (apoE) plays a major role ...
Cached Biology News:UCSB scientists report 'new beginning' in split-brain research, using new analytical tools 2UCSB scientists report 'new beginning' in split-brain research, using new analytical tools 3UCSB scientists report 'new beginning' in split-brain research, using new analytical tools 4Study details essential role of trust in agricultural biotech partnerships 2Study details essential role of trust in agricultural biotech partnerships 3Study details essential role of trust in agricultural biotech partnerships 4Study details essential role of trust in agricultural biotech partnerships 5Study details essential role of trust in agricultural biotech partnerships 6Softening arteries, protecting the heart 2Softening arteries, protecting the heart 3
(Date:1/15/2014)... Freeslate, Inc ., the leading ... Lupin Limited, one of India’s top five pharmaceutical companies, ... System for high throughput solid form screening. ... a wide range of quality, affordable generic and branded ...
(Date:1/14/2014)... San Diego, CA (PRWEB) January 14, 2014 ... based on the products of cells grown under simulated ... an international license agreement with Suneva Medical, Inc. for ... media (CCM). , This agreement is an ...
(Date:1/14/2014)... DIEGO and BETHESDA, Md. ... are joining together with two institutes from the National ... reliable tools for bringing safer, more effective treatments to ... the National Center for Advancing Translational Sciences (NCATS) and ...
(Date:1/14/2014)... , Jan. 14, 2014   Kinaxis ®, provider of ... and sales and operations planning ( S&OP ) service, is ... Summit , which will be held at the Hilton San ... join Kinaxis customer Elisabeth Kaszas , Director of Supply ...
Breaking Biology Technology:Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
... as the "holy grail" of nanoscience, researchers at the ... the first time used DNA to guide the creation ... dimensions measured in billionths of a meter). The ability ... functional materials that take advantage of the unique properties ...
... 30 Monogram,Biosciences, Inc., (Nasdaq: MGRM ) announced ... 7, 2008 at 4:30 p.m. (Eastern Time) to discuss,fourth ... for 2008.,The call will be hosted by Mr. William ... in the live teleconference, please call (877) 545-1409,or (719) ...
... (TSX: HBP / Frankfurt: WKN 918864), AURORA, ... that at the Company,s Annual General Meeting held ... resolutions presented by,management, appointing KPMG LLP as auditor, ... Slawomir Majewski, and Gordon Lickrish as,directors, and approving ...
Cached Biology Technology:DNA technique yields 3-D crystalline organization of nanoparticles 2DNA technique yields 3-D crystalline organization of nanoparticles 3Monogram Biosciences Announces Fourth Quarter 2007 Financial Results Conference Call 2Helix BioPharma shareholders vote in favour of management 2