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:6/24/2015)... YORK , June 24, 2015 The ... rate. The major drivers for the market include growth ... number of new drug launches. Over the years, the ... increased. Between 2001 and 2010, the FDA approved 225 ... according to WIPO, Europe accounted ...
(Date:6/23/2015)... 23, 2015   MedNet Solutions , an ... entire spectrum of clinical research, is pleased to ... , the company,s intuitive, flexible and affordable cloud-based ... 2015 Stevie® Award by the American Business ... Website category.  The American Business Awards are considered ...
(Date:6/18/2015)... June 18, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... on the growing mobile commerce market announces that its Wocket® ... on "Money on the Mark", scheduled to air on WABC ... June 20 th . The broadcast air- ... 7:00 to 8:00pm EST. NXT-ID, Inc.,s CEO Gino Pereira ...
Breaking Biology News(10 mins):Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 2Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 3Biological Safety Testing Market by Application, Product, & Test - Global Forecast to 2019 4MedNet Solutions' iMedNet eClinical Wins Silver Stevie Award 2NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 2NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 3
... challenges Africa faces when it comes to feeding its ... and famine let alone broader food security issues ... these challenges in the longer term is equally important, ... and development. A re-invigorated effort to boost African ...
... Protection Agency issued its first comprehensive report on major ... list, accounting for more than 70 percent of industrial ... Many climate experts have urged power plants and other ... atmosphere and sequester it deep underground a technique ...
... Energy (DOE),s Lawrence Berkeley National Laboratory (Berkeley Lab) have ... protein (CETP) mediates the transfer of cholesterol from "good" ... (LDLs). These findings point the way to the design ... could help prevent the development of heart disease. ...
Cached Biology News:Cutting-edge science creating solutions for African agriculture 2Stanford scientist to discuss the challenges and opportunities of carbon sequestration at AAAS 2How good cholesterol turns bad 2How good cholesterol turns bad 3
(Date:6/29/2015)... ... June 30, 2015 , ... This cutting edge standard ... machines. Featuring 12 distinct peaks, the WAV-8 is the world’s first cuvette-shaped, solid-state ... spec deep into the NIR range. Previous spectrophotometer calibration standards, such as those made ...
(Date:6/29/2015)... , June 29, 2015  AACC, a global ... health through laboratory medicine, is pleased to announce ... Clinical Chemistry , has increased to 7.9 in ... increase places Clinical Chemistry in the ... the significant influence of the research it publishes ...
(Date:6/29/2015)... June 29, 2015   Veracyte, Inc . (Nasdaq: ... field of molecular cytology, today announced that it has ... Top Workplaces list for the second year in a ... solely on an annual survey of Bay Area-company employees. ... the degree to which Veracyte values our employees and ...
(Date:6/26/2015)... , June 26, 2015 /PRNewswire/ - iCo Therapeutics ("iCo" ... announced that all nominees listed in the management ... at its 2015 Annual Meeting of Shareholders, held ... by ballot, the following 5 nominees proposed by ... to serve until the Company,s next Annual Meeting ...
Breaking Biology Technology:FireflySci Releases Spectrophotometer Calibration Standards for NIR Wavelength Accuracy Verification 2FireflySci Releases Spectrophotometer Calibration Standards for NIR Wavelength Accuracy Verification 3AACC's Journal, Clinical Chemistry, Continues to Have Significant Impact on Medical Testing, Healthcare 2AACC's Journal, Clinical Chemistry, Continues to Have Significant Impact on Medical Testing, Healthcare 3Veracyte Named a 2015 "Top Workplace" in the San Francisco Bay Area 2Veracyte Named a 2015 "Top Workplace" in the San Francisco Bay Area 3iCo Therapeutics Announces Voting & Election Results from Annual Meeting of Shareholders 2iCo Therapeutics Announces Voting & Election Results from Annual Meeting of Shareholders 3
... Nov. 12, 2010 Ardea Biosciences, Inc. (Nasdaq: ... and chief executive officer, will present at the following upcoming ... Healthcare Conference in New York, NY. Presentation: 1:40 p.m. EST on ... Annual Health Care Conference in New York, NY. Presentation: 1:00 ...
... from Thomson Reuters released today shows that the US is no ... kept pace with the increased output from European and Asia-Pacific nations. ... found that research output from the US has been surpassed by ... 40 percent of research papers in the most influential journals(1). By ...
... Cat fanciers everywhere appreciate the gravity-defying grace and exquisite balance ... extend even to the way cats lap milk? Researchers ... domestic and big cats lap and found that felines of ... physical forces. The results will be published in the ...
Cached Biology Technology:Ardea Biosciences to Present at Two Upcoming Investor Conferences 2Ardea Biosciences to Present at Two Upcoming Investor Conferences 3US Dominance in Scientific Research Significantly Challenged by Increased Competition from Europe and Asia, According to Thomson Reuters Study 2Cats show perfect balance even in their lapping 2Cats show perfect balance even in their lapping 3Cats show perfect balance even in their lapping 4
... number is a new product ... Cornings product number. If showing ... under the old Sigma-Aldrich number ... for assistance. Mfr Desig: ...
... Virgin, optically clear polystyrene with frosted ... coordinates for cell counting. 100% integrity ... a new product number, created to ... showing no availability yet, please order ...
... LIC Duet™ T7•Tag ® Ek Adaptor ... operator, ribosome binding site (rbs), ATG translation ... sequence. The T7•Tag is a small epitope ... detection of the target protein with T7•Tag ...
The LIC Duet™ Mini Adaptor encodes a T7 promoter, lac operator, ribosome binding site (rbs), and an ATG translation initation codon. This adaptor is designed for expression of a target protei...
Biology Products: