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

as small, solitary cells like these that are only a few micrometers in diameter.

Conducted largely at Georgia Tech’s marine lab in Savannah, Ga., the research was sponsored by the U.S. National Science Foundation and the U.S. Environmental Protection Agency.

Phaeocystis has two primary predators: small grazers such as ciliates, which prefer to eat small solitary cells that are four to six microns in diameter, and the larger shrimp-like copepods, which prefer to eat large, ball-shaped colonies.

When copepods are attacking the phytoplankton, therefore, the best survival strategy of Phaeocystis is to form solitary cells. When ciliates are attacking, the best strategy is to form colonies that are too large for those predators to consume.

Lead author Jeremy D. Long, along with collaborators Gabriella W. Smalley, Todd Barsby, Jon T. Anderson and Mark Hay found that’s just what Phaeocystis does. Chemicals that signaled attacks from copepods suppressed the formation of colonies by 60 to 90 percent, while signals from ciliates enhanced colony formation by more than 25 percent.

The transformations took place over periods of three to six days, and the overall size difference could be dramatic. “When one of these cells changes to the biggest colony form, although it takes a while, it’s like changing from a mosquito to 76 blue whales or 3,000 bull elephants,” Hay explained. “That’s a pretty dramatic difference.”

Defensive responses are often seen in higher plants, but this is believed to be the first report of such a complex and species-specific response in marine phytoplankton. Hay suspects scientists may find other examples of complex defensive strategies when they look more closely at other single-celled organisms.

The response of Phaeocystis could be important to scientists studying climate change because the predator that ultimately consumes the phytoplankton determines the fate of the carb
'"/>

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:7/21/2015)... , July 21, 2015  NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile ... wallet, announces that it has filed provisional patent ... Method. This invention highlights next ... authorizes an account, but also the user using ...
(Date:7/13/2015)... JOSE, Calif. , July 13, 2015 /PRNewswire/ ... leading developer of human interface solutions, today announced ... generation touch and display driver integration (TDDI) product ... is the first to combine Synaptics , ... with proven display driver technology developed in the ...
(Date:7/9/2015)... 2015 Research and ... the "Biometrics for Banking; Market & Technology ... to their offering. The adoption for ... growth and the forecast is that by 2020 ... companies involved in delivering biometric systems to the ...
Breaking Biology News(10 mins):NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 2NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 4Synaptics Announces Sampling of Second Generation TDDI Solutions 2Synaptics Announces Sampling of Second Generation TDDI Solutions 3Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 2Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 3
... TORONTO, ON Psychologists at the University of ... interaction has the ability to influence an individual,s sensitivity ... clinical implications for doctor-patient relationships and the general well-being ... of studies over the past several decades have demonstrated ...
... CHICAGO --- Northwestern Medicine researchers at the Robert H. ... a new, nontoxic drug made from a chemical in soy ... to the rest of the body. These findings will ... Research Frontiers in Cancer Prevention Research Conference. Genistein, a ...
... at the University of California, San Diego School of ... of federally approved drugs to more than 1,000 proteins ... opening new avenues to repurpose these drugs to treat ... PLoS Computational Biology . "Tuberculosis is currently ...
Cached Biology News:Psychologists identify influence of social interaction on sensitivity to physical pain 2Soy may stop prostate cancer spread 2TB-drugome provides new targets for anti-tuberculosis drug discovery 2
(Date:7/27/2015)... 2015   Inocucor Technologies Inc ., the ... for farmers, has received a notice of allowance ... its patent application to protect Inocucor consortia and ... enhance yields on farms and in greenhouses. ... IN-M1 microbial consortium and its fermentation byproducts, which ...
(Date:7/27/2015)... ... July 27, 2015 , ... BlueInGreen® ... Monday. The venture will bring the world’s most efficient gas dissolution technology to ... and technologies to both the industrial and municipal markets. With offices located in ...
(Date:7/27/2015)... July 27, 2015 The Brain ... winners of its annual Klerman and Freedman Prizes, ... who have been supported by NARSAD Young Investigator ... pursue innovative ideas in neurobiological and psychosocial research, ... for the early detection, treatment, prevention and cure ...
(Date:7/27/2015)... -- IDEXX Laboratories, Inc. (NASDAQ: IDXX ) announced ... 100,000 specimens to IDEXX Reference Laboratories for symmetric dimethylarginine, ... since the breakthrough kidney function test launched in the ... of suffering and death in cats and dogs. The ... accepted kidney disease prevalence data showing that 1 in ...
Breaking Biology Technology:Inocucor Technologies Receives Groundbreaking U.S. Patent for Proprietary Biological Processes that Stimulate Plant Growth 2Inocucor Technologies Receives Groundbreaking U.S. Patent for Proprietary Biological Processes that Stimulate Plant Growth 3BlueInGreen Brings Water Treatment Technology to Florida 2Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 2Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 3Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 4Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 5Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 6Over 100,000 Pets Tested with New IDEXX SDMA Kidney Function Test Since Product Launch on July 13 2Over 100,000 Pets Tested with New IDEXX SDMA Kidney Function Test Since Product Launch on July 13 3Over 100,000 Pets Tested with New IDEXX SDMA Kidney Function Test Since Product Launch on July 13 4Over 100,000 Pets Tested with New IDEXX SDMA Kidney Function Test Since Product Launch on July 13 5
... 6, 2012 Neurocrine Biosciences, Inc. (Nasdaq: NBIX ... Officer of Neurocrine Biosciences, will be presenting at the 14th ... The live presentation takes place on Monday, February ... Time.  The presentation will be webcast and may be accessed ...
... 6, 2012  BioStorage Technologies, a global provider of ... chain logistics for the bioscience industry, will host ... in Clinical Trials on Tuesday, March 6, 2012 ... The 2-hour workshop will focus ...
... 2012 UV Flu Technologies, Inc. ( OTCBB: ... ahead of schedule in its continuing program to eliminate all debt. ... the remaining and final convertible note, in the amount of $32,500 ... we have made in the last twelve months is nothing short ...
Cached Biology Technology:BioStorage Technologies to Host Global Sample Management Workshop at Partnerships in Clinical Trials 2UV Flu Technologies Continues Aggressive Program to Pay off Convertible Debt 2UV Flu Technologies Continues Aggressive Program to Pay off Convertible Debt 3
... The dual-bay DNA Engine Dyad ... for DNA amplification (PCR). The chassis ... units (sample-holder, heat-pump assemblies), which hold ... Color display offers graphical programming with ...
... Red fluorescent RNA stain is used to ... or glyoxal) agarose gels and does not ... a 302 nm transilluminator, the stain emits ... on Polaroid film or with a CCD ...
... The MitoPT kit is used in conjunction ... in culture and induce apoptosis according to your ... cells as a negative control). Once you have ... MitoPT solution to each population and incubate the ...
... Disruption of the mitochondrial transmembrane ... intracellular events that occur following induction ... Detection Kit utilizes a lipophilic cation, ... activity marker. MitoLight is a mitochondrial ...
Biology Products: