Navigation Links
Tiny polyps gorge themselves to survive coral bleaching

llyfish and anemones, provides a safe home within its cells for the algae while the algae convert sunlight into energy for the polyp.

Grottoli said that when the temperature of the waters around a reef exceeds that upper limit and stays there for more than two weeks or so, it triggers a bleaching event. Once that happens, the symbiotic algae and the brown or green photosynthetic pigments inside are lost. The result is a "bleached" white coral.

"In most cases, corals get 100 percent of their daily metabolic energy needs from the algae. Once they are gone, the coral polyp is left with only two alternatives: Draw energy from stored fats within its body, or eat organic matter and plankton in the surrounding water," she said.

But what has puzzled Grottoli and other researchers is why in some bleaching events, some corals quickly died off while others close by were able to recover. To answer that, she returned to Hawaii Institute of Marine Biology where she has been studying corals for the past 13 years.

There, she and her collaborators focused on two types of common coral that thrived on the local reefs, Montipora capitata, or "rice" coral, and Porites compressa, "finger" coral. They collected samples of both types and placed them in sets of tanks supplied with natural seawater. Water from the reef was filtered to remove any plankton and flowed through the tanks in the same way it did through their natural environment. In one set of tanks, the water was heated, mimicking the rising temperatures leading to a bleaching event.

After a month, fragments of the coral were gathered from all of the tanks and put through a series of tests measuring energy reserves, photosynthetic rates and growth rates of the coral. The results showed that both Porites and Montipora used up their internal energy reserves. However, after a month of recovery on the reef (where plankton is naturally available) Porites continued to use up its reserves whil
'"/>

Source:Ohio State University


Page: 1 2 3

Related biology news :

1. Defenseless plants arm themselves with metals
2. Molecular messengers perform a crucial role in the ability of injured nerve cells to heal themselves
3. One in 14 men having a heart attack drive themselves to hospital
4. Study finds how organs monitor themselves during early development
5. Targeted virus compels cancer cells to eat themselves
6. A new understanding of how cells defend themselves against bacterial pore-forming toxins
7. Scientists reveal how disease bacterium survives inside immune system cell
8. Discoveries by UAB and Florida scientists may help transplanted organs survive longer
9. Bacteria can survive for weeks on hospital surfaces
10. Bacteria that cause tooth decay able to survive without important biochemical pathway
11. Anthrax spores may survive water treatment
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Tiny polyps gorge themselves survive coral bleaching

(Date:9/29/2014)... A new study confirms that the exposure to tar ... than of regular cigarettes. Similarly, exposure to nicotine ... increasingly popular type of cigarette in several countries around ... of certain toxic chemicals in the smoke of these ... because lower levels of chemicals in the smoke are ...
(Date:9/29/2014)... NASA story from 2009, "human activities in this area of ... Palm oil is increasingly grown for use as a cooking ... foods. It has become the most widely produced edible oil ... to surpass that of soybean oil. , The environmental effects ... cleared to grow the crop, and the preferred method is ...
(Date:9/29/2014)... team says recently identified radiation detection properties of a ... for homeland security and medical advances. , In a ... of Optics Letters , UT Arlington Physics Professor ... to fabricate transparent nanoscintillators by heating nanoparticles composed of ... formed. A scintillator refers to a material that ...
Breaking Biology News(10 mins):Slim cigarette smokers not exposed to more harmful chemicals 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 3
... the Science of Food and Agriculture shows that konjac ... strains of E. coli and Salmonella bacteria. The study ... Research Centre, the Netherlands, shows that these foodstuffs act as ... themselves to the fibrous foods instead of the gut cells ...
... an ice-free region of Antarctica have discovered the last ... insects--on the interior of the southernmost continent before temperatures ... An abrupt and dramatic climate cooling of 8 degrees ... roughly 14 million years ago, forced the extinction of ...
... (August 5, 2008) A study published online today in ... two eggs for breakfast, as part of a reduced-calorie diet, ... than those who eat a bagel breakfast of equal calories. ... Journal of the American College of Nutrition , which ...
Cached Biology News:Antarctic fossils paint a picture of a much warmer continent 2Antarctic fossils paint a picture of a much warmer continent 3Antarctic fossils paint a picture of a much warmer continent 4Antarctic fossils paint a picture of a much warmer continent 5Adults who eat eggs for breakfast lose 65 percent more weight 2Adults who eat eggs for breakfast lose 65 percent more weight 3
(Date:9/30/2014)... a bio-mimicking analog of one of nature,s most ... research team led by Alejandro Briseno of the ... step in developing long-sought polymer architecture to boost ... in electronic devices. , Briseno, with colleagues ... at Stanford University and Dresden University of Technology, ...
(Date:9/30/2014)... 2014 Shimadzu Scientific Instruments has ... and highly precise tool for measuring displacement in ... With 1000-mm maximum movement distance, the DSES-1000 can ... gauge length of 10 mm. In addition, it ... 50-mm stroke and within +/- 100 µm below ...
(Date:9/30/2014)... Proove Biosciences , the commercial and research leader ... genetic test built upon research from their published P.A.I.N. ... provide physicians with an objective way to understand theirs ... between individuals. With this new test, physicians will be ... predisposition that will affect their pain tolerance. , The ...
(Date:9/30/2014)... CORD:USE Cord Blood Bank – www.corduse.com ... entered into an Equity and Exclusive Services Agreement with ... of patented technologies for the isolation of human cord ... is performing Phase I/II clinical trials in ... using Tianhe,s Stem Cell Educator Therapy showing that the ...
Breaking Biology Technology:Blades of grass inspire advance in organic solar cells 2Blades of grass inspire advance in organic solar cells 3Shimadzu’s New Long-Travel Extensometer Increases Precision for Soft Material Testing 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 2CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 3CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 4
... CSA Medical, Inc. ( www.CSAmedical.com ... technology and business plans for its proprietary spray ... Medical will be one of only eleven companies ... companies in total will present across three categories. ...
... health care startups reported $572 million in total investments ... 2010, according to the BioEnterprise Midwest ... year, while the total dollar ... of companies financed remains the same.   ...
... SAN DIEGO, Oct. 28 Orexigen® Therapeutics, Inc. (Nasdaq: ... of obesity, will announce financial results for the third quarter ... markets close. The announcement will be followed by a live ... Orexigen management will host the call and webcast ...
Cached Biology Technology:CSA Medical Selected to Present at Mid-Atlantic Bio Conference 2Midwest Health Care Startups Raise $572 Million Through Q3 2010 2Midwest Health Care Startups Raise $572 Million Through Q3 2010 3
Experion spin filters are used to filter the gel matrix and gel stain solution prior to use with the Experion automated electrophoresis system. Supplied as 10 spin filters....
The model 55D Rocking Shaker provides the same Reliable quality as the 55S, but double the value. The 55D gives you an additional platform with a height of 3.25 in....
... The membrane filters suitable for use in ... on top of each filter, in a specially ... ,The special pleating of the band of membrane ... when dispensed. The shape of the sealed band ...
... [RS17 ] to PRKAR2 cAMP is ... of cellular functions. cAMP exerts its effects ... which transduces the signal through phosphorylation of ... AMPK is a tetramer composed of two ...
Biology Products: