Navigation Links
Study: Sea stars bulk up to beat the heat
Date:11/17/2009

A new study finds that a species of sea star stays cool using a strategy never before seen in the animal kingdom. The sea stars soak up cold sea water into their bodies during high tide as buffer against potentially damaging temperatures brought about by direct sunlight at low tide.

"Sea stars were assumed to be at the mercy of the sun during low tide," said the study's lead author, Sylvain Pincebourde of Franois Rabelais University in Tours, France. "This work shows that some sea stars have an unexpected back-up strategy."

The researcher is published in the December issue of The American Naturalist.

Sea stars need to endure rapid changes in temperature. During high tide, they are fully submerged in cool sea water. But when tides receded, the stars are often left on rocky shorelines, baking in the sun.

Clearly the stars had some way of beating the heat, but scientists were unsure how they did it. Pincebourde and his team thought it might have something to do with fluid-filled cavities found in the arms of sea stars. So he set up an experiment to test it.

The researchers placed sea stars in aquariums and varied the water level to simulate tidal patterns. Heat lamps were used to control temperature, with some stars experiencing hotter temperatures than others. The researchers found that stars exposed to higher temperatures at low tide had higher body mass after the high tide that followed. Since the stars were not allowed to eat, the increased mass must be from soaking up water.

"This reservoir of cool water keeps the sea star from overheating when the tide recedes again the next day, a process called 'thermal inertia,'" Pincebourde said.

What appears to be happening, the researchers say, is that a hot low tide serves as a cue telling the star to soak up more water during the next high tide. And the amount of water the stars can hold is remarkable.

"It would be as if humans were able
'/>"/>

Contact: Kevin Stacey
kstacey@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study: diabetic neuropathy costs billions per year in lost work time
2. Study: Fountain of youth for your heart?
3. First-ever study: lack of critical lubricant causes wear in joints
4. Mayo Clinic study: Ossurs collars superior in immobilization and reduction of pressure
5. Study: weight-loss tips differ in African-American, mainstream magazines
6. Smithsonian study: Sediment prediction tools off the mark
7. Mouse study: When it comes to living longer, its better to go hungry than go running
8. Geisinger study: Inflammatory disease causes blindness
9. Stanford study: Bioenergy potential of reviving abandoned agricultural land
10. U-M study: Herceptin targets breast cancer stem cells
11. Study: Future snowmelt in West twice as early as expected; threatens ecosystems and water reserves
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/30/2015)... VIEW, Calif. , July 30, 2015 /PRNewswire/ ... and services for gene function analysis and biomarker ... Guide RNA (sgRNA) Knockout Library targeting all human ... specifically and permanently "knock out" a gene,s function. ... provides a high throughput screening tool so that ...
(Date:7/21/2015)... , July 21, 2015 Today, ZTE ... Already received as well as expected revenues in 2015 that relate ... FPC,s communicated revenue guidance of approximately 2,200 MSEK for 2015. ... is a leading smartphone manufacturer in China ... FPC1 02 5 for Axon , ...
(Date:7/13/2015)... , Jul. 13, 2015 NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile ... provisional patent 62/188684 for BEHAVIORAL-DIRECTED AUTHENTIATION ... new convenient and secure method to make payments.  ... payment methods, introduced with its groundbreaking voice-direct payment ...
Breaking Biology News(10 mins):CELLECTA, INC. Announces Launch of Human Whole Genome CRISPR Knockout Library 2FPC's Touch Fingerprint Sensor FPC1025 in ZTE's Smartphone Axon 2NXT-ID Patents Behavior-Directed Payments 2NXT-ID Patents Behavior-Directed Payments 3NXT-ID Patents Behavior-Directed Payments 4
... a climate as prone to extremes as Canada,s, buildings ... innovative solutions are being explored through the NSERC Smart ... initiative headquartered at Concordia, which has just received $1 ... "Through the ecoENERGY Innovation Initiative, our Government ...
... MNMay 2, 2013UnitedHealth Group and the Minneapolis Heart Institute ... of New Ulm, Minn., recently announced two grants from ... will fund weight management and nutrition initiatives for Hearts ... a research and demonstration project with a goal of ...
... to announce the launch of Environmental Science & ... accelerate the pace of research across the environmental field ... leading publishing outlet to highlight urgent critical findings in ... release its first issue January 2014 and open for ...
Cached Biology News:$1 million for smart energy solutions 2UnitedHealth Group grants more than $1 million for the heart of New Ulm project 2New ACS journal Environmental Science and Technology Letters to rapidly publish urgent research 2New ACS journal Environmental Science and Technology Letters to rapidly publish urgent research 3
(Date:8/3/2015)... 2015 E-QURE Corp. (OTCQB: EQUR), ... Bio-electrical Signal Therapy device ("BST Device"), a new and ... heal chronic wounds, today announced that the Company has ... distributor specializing in medical devices, for the marketing and ... a 70 years old, sales, marketing and distribution company ...
(Date:8/3/2015)... NEW YORK , August 3, 2015 ... "Global Market Study on 3D Cell Culture: ... published by Persistence Market Research, the global 3D cell culture ... is expected to expand at a CAGR of 29.1% ... View Full Report with TOC:  http://www.persistencemarketresearch.com/market-research/3d-cell-cultures-market.asp ...
(Date:8/3/2015)... ... 2015 , ... Sterlitech Corporation introduces the compact, quiet, and ... laboratory equipment. With optimized features, such as PTFE-coated contact surfaces, an oil-free design, ... solution for a broad range of vacuum filtration applications. , Featuring a 1/7 ...
(Date:7/31/2015)... ... July 31, 2015 , ... Global ... and premium industry insights on the global resorcinol industry. The report highlights the ... of vivid market scenarios and analysis of primary and secondary inputs from the ...
Breaking Biology Technology:E-QURE Corp Signs Second Distribution Agreement in Israel 2E-QURE Corp Signs Second Distribution Agreement in Israel 3Global 3D Cell Culture Market Will Reach US$ 2,717.6 Million by 2020: Persistence Market Research 2Global 3D Cell Culture Market Will Reach US$ 2,717.6 Million by 2020: Persistence Market Research 3Global 3D Cell Culture Market Will Reach US$ 2,717.6 Million by 2020: Persistence Market Research 4Sterlitech Launches New Line of Vacuum Pumps 2Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 2Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 3Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 4
... Area Economic Development Corporation 's annual business-plan contest is starting ... the best business ideas from Eau Claire County. , ,For ... on March 29. Then entrants in the Creating Your ... prepare their applications. , ,Businesses judged to have the best ...
... Metavante Corporation has completed its acquisition of ... says it is expanding its Healthcare Payments Solutions ... Reynolds, who previously served as senior vice president ... Wells Fargo Institutional Trust Service, will become president ...
... , a local software and consulting firm, has teamed ... a new geographic information systems application, the companies said ... to create and distribute land records data through a ... challenges faced by organizations trying to maintain and distribute ...
Cached Biology Technology:
... ULS cDNA Synthesis and Labeling Kit generates ... experiments. First unmodified cDNA is made via ... using an Oligo(dT) primer. Unlike other methods, ... in the reverse transcription reaction. This unmodified ...
... enables fully automated hybridization of microarrays on ... been designed to offer researchers improved reproducibility, ... perform a wide range of applications. ... 485C; denaturations of up to 99C. The ...
... The user-friendly Eppendorf Thermomixer R offers ... that require shaking, heating, and cooling. ... expanded its application and temperature control ... each accommodate 24 micro test tubes, ...
... a high quality microarray scanner based on patented ... and spatial resolution. The DNAscope LM is ... microarray scanner that is upgradeable to a total ... Includes control module (computer), monitor, ...
Biology Products: