Navigation Links
Marine phytoplankton changes form to protect itself from different predators

on it contains. If eaten by copepods, for example, the carbon becomes part of fecal packages that sink into the deep ocean where a portion of that carbon is sequestered – thereby reducing atmospheric carbon dioxide, a leading greenhouse gas. If consumed by smaller creatures like ciliates, less of the carbon sinks to the deep sea and more remains in the surface waters.

“This could alter the flow of energy and nutrients from deep to shallow, depending on what might be trying to eat it, and how the organism responds to the chemical signals of what’s attacking it,” Hay said.

Experimentally, the researchers attempted to separate the chemical signals from the actual predators. They grew Phaeocystis in the presence of either ciliates or copepods. They then filtered out both the phytoplankton and predators, leaving only water containing the chemical signals of attack.

Water samples containing signals from the two predators were then separately introduced into Phaeocystis cultures that had not been attacked. The scientists then studied how the different chemical signals affected the percentage of Phaeocystis living in colonies or as solitary cells. Finally, they examined whether this response affected how much the predators ate to determine if the change conferred a survival advantage.

“We found that these organisms were making the right choice,” Hay said. “They were shifting to the shape that made them largely immune to whichever predator was attacking, and this shift suppressed either the feeding or growth and reproduction of the consumer to which they were responding.”

The role of this phytoplankton has been controversial in the scientific community, with some arguing that Phaeocystis makes a good food source for higher creatures in the cold oceans, while others contend its food role is small. While this paper won’t resolve the dispute, Hay believes it shows that both points of view could be correct – depending on
'"/>

Source:Georgia Institute of Technology Research News


Page: 1 2 3 4

Related biology news :

1. Marine sponge yields nanoscale secrets
2. Census of Marine Life explorers surprised by diversity, density of Arctic creatures
3. Marine bacterium suspected to play role in global carbon and nitrogen cycles
4. Marine conservation organizations team up to conduct Indonesia coral reefs assessment
5. Marine mammals are on the frontline of failing ocean health
6. Marine dead zone off Oregon is spreading
7. Researchers trace evolution to relatively simple genetic changes
8. Plants defy Mendels inheritance laws, may prompt textbook changes
9. Scientists find evidence of catastrophic sand avalanches, sea level changes in Gulf of Mexico
10. Customized gene chip provides rapid detection of genetic changes in childrens cancer
11. New amphibian species result from exploration, not from rule changes
Post Your Comments:
(Date:11/21/2014)... Nov. 19, 2014  Earlier this year Donald ... College, and one of the most prolific inventors in ... are transmitted from Smartphones to third party agencies. Spector ... has one of the earliest known patents in this ... in the military, child care, elder care and hospital ...
(Date:11/21/2014)... C-Labs LLC, a leading provider of remote ... today announced the appointment of John Traynor ... strategic advisor to the firm, Mr. Traynor will now ... based out of the C-Labs office in ... Muench , Chief Executive Officer. Photo - ...
(Date:11/18/2014)...  The Secure Identity & Biometrics Association (SIBA) ... the formation of The Airport Entry and Exit ... and Biometric Entry and Exit Solutions Framework for ... from BORDERPOL, the international non-profit organization that works ... regarding border security, traveler and migration systems. ...
Breaking Biology News(10 mins):Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 3
... of the International Society for Sexually Transmitted Disease Research ... City, Canada. The world,s foremost conference in the ... from every continent to discuss the most recent developments ... emerging threats in bacterial STDs; major intervention programs for ...
... University of Georgia researcher has invented a new ... clothing, face masks, paper towelsand yes, even diapers, ... germ-free. The simple and inexpensive anti-microbial technology ... can be applied during the manufacturing process or ...
... are developing new technologies that combine a laser ... particles such as bacteria, viruses and DNA for ... to food safety. The technologies could bring ... or miniature instruments that perform measurements normally requiring ...
Cached Biology News:New UGA technology makes textiles permanently germ-free; targets health care-associated infections 2New UGA technology makes textiles permanently germ-free; targets health care-associated infections 3Laser, electric fields combined for new 'lab-on-chip' technologies 2Laser, electric fields combined for new 'lab-on-chip' technologies 3
(Date:12/24/2014)... MD (PRWEB) December 23, 2014 ... into law H.R. 83, the Omnibus and Continuing ... first time, made hydrocephalus a condition eligible to ... Programs (CDMRP) administered by the Department of Defense ... with its allies on Capitol Hill, is celebrating ...
(Date:12/24/2014)... The report expects global cell isolation and expansion market ... a carefully analyzed data about the vital drivers, restraints, ... Full Copy of Report @ http://bit.ly/1yUxy0T , ... expansion will keep witnessing growth at an impressive CAGR ... driven by rapid technological advancements, government funding and investments, ...
(Date:12/24/2014)... PharmaBoardroom,s new report, , Healthcare and ... free download , digs deep into this vibrant market, ... sector today. One area where Algeria ... a homegrown pharmaceutical manufacturing base, even if the government,s ambitious ... off. A cursory comparison with neighboring Morocco ...
(Date:12/22/2014)... 2014 The Center for Professional ... technical training across the life sciences industry, has partnered ... (SCDM) to provide the organization's members with discounted classroom ... to the more than 350 sessions across 80 course ... off when registering for a public course ...
Breaking Biology Technology:Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 2The Cell Expansion Market is Expected to Reach $14.8 billion by 2019 - New Research Report by MarketsandMarkets 3PharmaBoardroom Releases New Algeria Pharmaceuticals Report 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 3CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3
... In a video interview, new CEO,Andrew Witty comments on ... strategic vision for the business., The ... diversified global business - Deliver more products of value ... and vodcast are available now on, http://www.cantos.com . It,s free ...
... 23 Duska Therapeutics,Inc. (OTC Bulletin Board: DSKA) ... a synopsis of a proposed Phase 3 clinical ... Food and Drug Administration,s (the,"FDA") Division of Cardiovascular ... with the FDA, including a face-to-face,meeting held on ...
... Next generation design reduces the amount of retraction needed for surgical ... ... July 23 Pioneer Surgical Technology,today announces the market availability of ... optimize,anterior cervical fusion procedures while addressing the clinical needs of,anterior cervical ...
Cached Biology Technology:Duska Therapeutics Submits Phase 3 ATPace(TM) Protocol to FDA for Comment 2Duska Therapeutics Submits Phase 3 ATPace(TM) Protocol to FDA for Comment 3Duska Therapeutics Submits Phase 3 ATPace(TM) Protocol to FDA for Comment 4Pioneer(R) Surgical Technology, Inc. Announces the Market Launch of the SlimFuse(TM) Anterior Cervical Plate System 2
Guanylate Kinase Purified Anti-Mouse, Anti-Rat clone 28, Isotype Mouse IgG 1 , 50 µg Consult technical datasheet for details....
Proliferin (C-14)...
... the computing power of your ValveBank system! ... sequences with a Macintosh computer using graphic ... to disk, print out program listings, then ... in one simple step., EasyCode is used ...
... series of Class II Biological Safety ... certification to the world's highest safety ... the cabinets cannot be adjusted out ... low noise and arm rest ensure ...
Biology Products: