HOME >> BIOLOGY >> NEWS
Parachuting allows krill to eat and run

Antarctic researchers have recorded a novel behavior in krill that may help regulate greenhouse gases. Antarctic krill, one of the largest animal resources on Earth, parachute into the deeper layers of the ocean many times a night and sequester large amounts carbon in the process.

The work is reported by Geraint Tarling of the British Antarctic Survey and Magnus Johnson of the Scarborough Centre of Coastal Studies, University of Hull.

Krill are shrimp-like crustaceans that live in the open ocean, mainly in large swarms. They reach particularly high numbers in Antarctica, where they form the staple diet of fish, penguins, seals, and whales. Like many other small pelagic animals, they perform daily vertical migration (DVM), in which they occupy the upper ocean layers at night to eat and the deeper layers by day to hide. Previous research has shown that this behavior may be a rapid means of transporting carbon to the ocean's interior. However, the amount sequestered was not considered to be large because it was assumed that DVM happened just once every 24 hours.

In the new work, the researchers found that krill are capable of many migrations each night. What is more, the downward migration may be particularly rapid as the krill fan out their swimming legs and enter a controlled descent, akin to parachuting. The behavior is most apparent when their stomachs are full and may be an effective means of getting out of harm's way when they can eat no more. It is estimated that Antarctic krill sequester 0.02 metric gigatons of carbon per year through this behavior, equivalent to the annual carbon emissions of 35 million cars.


'"/>

Contact: Heidi Hardman
hhardman@cell.com
617-397-2879
Cell Press
6-Feb-2006


Page: 1

Related biology news :

1. Presence of wolves allows aspen recovery in Yellowstone
2. Cannibalism of the young allows individual fish to specialize
3. Social tolerance allows bonobos to outperform chimpanzees on a cooperative task
4. Expedition allows teachers to participate in polar research
5. Remarkable physiology allows crucian carp to survive months without oxygen
6. 100,000 year-old DNA sequence allows new look at Neandertals genetic diversity
7. New approach allows closer look at smoker lungs
8. Why nerve cells work faster than the theory allows
9. A new tree of life allows a closer look at the origin of species
10. Nuclear medicine imaging allows prediction of breast cancer patients response to hormonal treatment
11. Molecular imaging allows detection of plaques likely to rupture

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/11/2017)... April 11, 2017 NXT-ID, Inc. (NASDAQ: ... company, announces the appointment of independent Directors Mr. Robin ... its Board of Directors, furthering the company,s corporate governance and ... Gino Pereira ... look forward to their guidance and benefiting from their considerable ...
(Date:4/5/2017)... , April 4, 2017 KEY FINDINGS ... anticipated to expand at a CAGR of 25.76% during ... diseases is the primary factor for the growth of ... report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The global ... product, technology, application, and geography. The stem cell market ...
(Date:3/30/2017)... -- The research team of The Hong Kong Polytechnic ... by adopting ground breaking 3D fingerprint minutiae recovery and matching technology, ... accuracy for use in identification, crime investigation, immigration control, security of ... ... A research team led by Dr ...
Breaking Biology News(10 mins):
(Date:6/28/2017)... 2017 (PRWEB) , ... June ... ... of Siemens’ STAR-CCM+® software for multiphysics computational fluid dynamics (CFD) simulation and ... exploration and optimization. STAR-CCM+ version 12.04 introduces Design Manager, allowing users to ...
(Date:6/27/2017)... ... June 27, 2017 , ... Brain State Technologies, ... Kickstarter campaign on June 15th to fund production of the new B2v2 wearable ... original Kickstarter goal by more than 150% in a little over a week. ...
(Date:6/27/2017)... ... June 27, 2017 , ... DuPont ... gains exclusive rights to the ERS patent portfolio covering CRISPR-Cas genome editing technology ... the foundational intellectual property (IP) of the CRISPR-Cas technology from co-inventor and co-owner ...
(Date:6/26/2017)... ... , ... Two new members were elected to the University City Science Center’s ... President, J Nowak Strategy and Michele Masucci, Ph.D., Vice President for Research Administration at ... and Kenneth L. Kring, and re-election of David P. Holveck and Richard P. Jaffe, ...
Breaking Biology Technology:
Cached News: