Navigation Links
Vital ocean prey play active role in environment

Although Antarctic krill (Euphausia superba) are one of the best-studied organisms of the open sea, key aspects of their life cycle have remained murky.

Understanding krill is important because they are vital prey for fish, birds, and marine mammals, yet they are vulnerable to fishing pressure and environmental change. In the February 2006 issue of BioScience, the monthly journal of the American Institute of Biological Sciences, Stephen Nicol of the Australian Antarctic Division presents a new conceptual model of the species' life history that emphasizes krill's active role in exploiting a highly seasonal environment.

Nicol's model separates the species into different life stages: larvae, juveniles, gravid females, and other adults. These groups are believed to remain geographically separate. In summer, adults remain close to the edge of the continental shelf, which allows them access to open-water food supplies. Females carrying eggs move offshore to deep water to spawn, where the embryos sink. The embryos hatch into free-swimming larvae at depth, then swim upward over the course of several weeks. The larvae are at this stage dependent on microorganisms found on the underside of sea ice for food, and as they grow they drift with pack ice. After they metamorphose in late winter and early spring, the juveniles move with the currents back to inshore waters. In summer, the juveniles are found inshore of the adults. The life cycle thus keeps krill in younger stages separate from adults, which reduces competition for food and lessens the chance that adults will prey on younger stages. Further studies of krill can lead to an improved picture of the Southern Ocean ecosystem, Nicol writes.


'"/>

Source:American Institute of Biological Sciences


Page: 1

Related biology news :

1. Vital step in cellular migration described by UCSD medical researchers
2. NASA study finds snow melt causes large ocean plant blooms
3. Anammox bacteria produce nitrogen gas in oceans snackbar
4. Elephant seal pups suffer from ocean warming
5. Currents could disrupt ocean food chain
6. Scientists discover global pattern of big fish diversity in open oceans
7. Microbe has huge role in ocean life, carbon cycle
8. Genetics links whale to two different ocean basins
9. Climate change will affect carbon sequestration in oceans, model shows
10. Asleep in the deep: Model helps assess ocean-injection strategy for combating greenhouse effect
11. Understanding the oceans microbes is key to the Earths future
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Vital ocean prey play active role environment

(Date:12/17/2014)... 2014  HITLAB SM announced today its completion of ... adherence to current U.S. Food and Drug Administration (FDA) ... device and smart phone application trials utilizing the highest ... "HITLAB is determined to improve global healthcare access, quality, ...
(Date:12/17/2014)... Dec. 16, 2014  Automation is fundamentally transforming the travel ... international borders. Over the past decade, ePassports, biometric readers, ... self process through border control via eGates and Automated ... airports, seaports, and land borders across the globe. ...
(Date:12/11/2014)... Markets , http://photos.prnewswire.com/prnh/20130307/600769 ... addition of the "Biometrics Market in India 2015-2019" ... major trend emerging in this market is the adoption ... than one characteristic of an individual for verification and ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... often behave differently than temperate soils when being farmed. ... cultivated. With food shortages looming and soil quality declining ... and sub-tropical farming more productive and sustainable. New research ... a winter cover crop is most effective in retaining ...
... Georgia researchers have developed a new technology that ... from readily available non-food crops, such as Bermudagrass, ... "Producing ethanol from renewable biomass sources such as ... in large quantities," said Joy Peterson, professor of ...
... the U.S. will be overweight or obese by 2030, with ... $956.9 billion, according to researchers at the Johns Hopkins Bloomberg ... Quality and the University of Pennsylvania School of Medicine. Their ... Obesity . "National survey data show that the ...
Cached Biology News:New UGA biomass technology dramatically increases ethanol yield from grasses and yard waste 2New UGA biomass technology dramatically increases ethanol yield from grasses and yard waste 3Study suggests 86 percent of Americans could be overweight or obese by 2030 2
(Date:1/22/2015)... Dr. Greg Leyer of UAS Labs recently was ... Pre-Conference seminar on probiotics in San Diego, CA. , ... conference for health care professionals. This year’s pre-conference seminar was ... in health. Dr. Leyer spoke about the emerging topics and ...
(Date:1/22/2015)... , Nueva Jersey , 22 de enero de ... Biomedical Research abre hoy su llamada a nominaciones para ... investigación científica ha hecho, o tiene el potencial para ... humana. Las nominaciones se aceptarán hasta el 15 de ...
(Date:1/22/2015)... PRINCETON, N.J. , Jan. 22, 2015  Derma ... tissue regeneration company focused on advanced wound care, ... from placental tissues, have been added to the ... announcement increases the opportunity for the AMNIOEXCEL® and ...
(Date:12/24/2014)...  Vermillion, Inc. (Nasdaq:   VRML), a bio-analytical solutions ... the Company closed its previously announced private placement ... W. Schuler , Birchview Fund LLC and several ... offering expenses.  The proceeds will be used for ...
Breaking Biology Technology:El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5Vermillion Announces Closing of Equity Financing 2Vermillion Announces Closing of Equity Financing 3
... Biomedical Research Program Awards Peer-Reviewed Grant, SARASOTA, Fla., ... was awarded the Florida Department of Health and James ... for its advanced cancer research in using B-amyloid protein ... in the amount of $100,000 was awarded to Roskamp,s,Investigator ...
... Barr Pharmaceuticals,Inc. (NYSE: BRL ) today ... a challenge of the patents listed by TAP,Pharmaceuticals ... Disintegrating Tablets (lansoprazole), 15mg and,30mg., Barr filed ... IV certification for a generic Prevacid SoluTab product ...
... Va., June 10 Diffusion Pharmaceuticals,LLC, a clinical-stage ... life-threatening unmet medical needs, today announced,the addition of ... (Photo: http://www.newscom.com/cgi-bin/prnh/20080610/NETU101 ), Mr. ... Virginia National Bank in,Charlottesville, Virginia. He also is ...
Cached Biology Technology:Roskamp Institute Wins Grant for Lung Cancer Research 2Barr Confirms Patent Challenge of Prevacid(R) SoluTab(TM) Delayed-Release Orally Disintegrating Tablets, 15mg and 30mg 2Barr Confirms Patent Challenge of Prevacid(R) SoluTab(TM) Delayed-Release Orally Disintegrating Tablets, 15mg and 30mg 3Diffusion Pharmaceuticals Announces Addition of Mark T. Giles to its Board of Directors 2
ExonBio Service provides one-stop recobinant protein shopping from cloning, expression and purification. Price including gene cloning....
... IgG FITC is used as the ... on tissues or culture cells where ... rabbits. It is highly recommended that ... the primary antibody, be included in ...
... x 25 mm; approximately 1 mm thick, ... sections, sandblasted frosted writing ... markings will not rub off or wash off ... store at room temperature ...
1000X solution used for inducing CopyControl™ based vectors to high copy numbers...
Biology Products: