Navigation Links
Whale sharks do the math to avoid that sinking feeling
Date:11/24/2010

They are the largest fish species in the ocean, but the majestic gliding motion of the whale shark is, scientists argue, an astonishing feat of mathematics and energy conservation. In new research published today in the British Ecological Society's journal Functional Ecology marine scientists reveal how these massive sharks use geometry to enhance their natural negative buoyancy and stay afloat.

For most animals movement is crucial for survival, both for finding food and for evading predators. However, movement costs substantial amounts of energy and while this is true of land based animals it is even more complex for birds and marine animals which travel in three dimensions. Unsurprisingly this has a profound impact on their movement patterns.

"The key factor for animal movement is travel speed, which governs how much energy an animal uses, the distance it will travel and how often resources are encountered," said lead author Adrian Gleiss from Swansea University. "However, oceanic animals not only have to consider their travel speed, but also how vertical movement will affect their energy expenditure, which changes the whole perspective."

For the past four years, Adrian Gleiss and Rory Wilson, from Swansea University, worked with Brad Norman from ECOcean Inc. to lead an international team to investigate the movements of whale sharks, Rhincodon typus, at Ningaloo Reef in Western Australia. They attached animal-borne motion sensors, accelerometers, to the free-swimming whale sharks to measure their swimming activity and vertical movement, which allowed them to quantify the energetic cost of vertical movement.

The team's data revealed that whale sharks are able to glide without investing energy into movement when descending, but they had to beat their tails when they ascended. This occurs because sharks, unlike many fish, have negative buoyancy.

Also, the steeper the sharks ascended, the harder they had to be
'/>"/>

Contact: Ben Norman
Lifesciencenews@wiley.com
44-124-377-0375
Wiley-Blackwell
Source:Eurekalert

Page: 1 2

Related biology news :

1. Researchers find first genetic evidence for loss of teeth in the common ancestor of baleen whales
2. Critically endangered whales flee Russian oil, gas boom
3. Whale sharks may produce many litters from 1 mating, paternity test shows
4. Blue whales align the pitch of their songs with extreme accuracy, study finds
5. Lone whales shout to overcome noise
6. UCLA biologists report how whales have changed over 35 million years
7. DNA analysis suggests whale meat from sushi restaurants in L.A., Seoul originated from Japan
8. Experts gather to solve mystery of largest recorded die-off of great whales
9. MMS and NOAA scientists study prey of Gulf of Mexico sperm whales
10. New study finds link between marine algae and whale diversity over time
11. New study suggests minke whales are not preventing recovery of larger whales
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... 2014 It is a great honor for ... of the world-renowned Thoracic and Cardiovascular surgeon, Mark E ... Dr. Ginsburg, with over 34 years of experience, is ... Good Samaritan Regional Medical Center. Dr. Ginsburg has been ... and is considered an expert in the implantation of ...
(Date:7/10/2014)... According to the new market research report, ... (Optical Prism, Pizeoelectric, Capacitive, and Adhesives), Application (Mobile Devices, ... and Geography - Global Trends & Forecasts to 2014 ... Market is projected to cross $14.35 Billion by 2020, ... to 2020. Browse more than 78 market ...
(Date:7/10/2014)... 2014 Fingerprint Cards, (FPC,s) new mobile ... (DW). A Chinese Top 5 smartphone OEM has selected FPC1021 ... production in October 2014.   FPC is proud ... OEM, which has a planned date for the start of ... for this phone of 3 million units. The Chinese OEM ...
Breaking Biology News(10 mins):Avery Biomedical Devices, Inc. announces the appointment of Mark E Ginsburg, M.D. to its Board of Directors 2Fingerprint Sensors Market worth $14.35 Billion by 2020 2Fingerprint Sensors Market worth $14.35 Billion by 2020 3FPC Wins DW for 1021 Touch Sensor for Flagship Smartphone from Chinese Top 5 Smartphone OEM 2
... focusing on the Central American river turtle ( Dermatemys ... team of Smithsonian scientists involved in the conservation of ... 238 wild turtles at 15 different locations across their ... "surprising lack" of genetic structure, the scientists write in ...
... may mean STOP or I LOVE YOU! A red splash ... one toxic butterfly species may mimic the wing pattern of another ... they send a stronger message: DON,T EAT US! , ... discovered that Heliconius butterflies mimic each other,s red wing ...
... high temperatures could help understand structures within our own ... and Heidelberg University, both in Heidelberg, Germany, were the ... heat-loving fungus, and used that information to determine the ... the nuclear pore. The study was published today in ...
Cached Biology News:Endangered river turtle's genes reveal ancient influence of Maya Indians 2An eye gene colors butterfly wings red 2A hot species for cool structures 2
(Date:7/10/2014)... July 10, 2014 Senior supply chain ... professional associations, addressed the challenges of “Reducing Cost, Lead ... Industries” through strategic sourcing. Describing the partnership of the ... Supply Chain Management Institute ( SCMI) of the ... June 24 at the Kroc Institute of Peace and ...
(Date:7/10/2014)... Research and Markets ( http://www.researchandmarkets.com/research/s3bqj2/photonic ) ... Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, Module ... to their offering. ... integration traces its roots in the latter half ... integration went unexplored and unfulfilled for several decades ...
(Date:7/10/2014)... the journal PNAS (Proceedings of the National Academy ... and sleep deprivation have a significant effect on our ... the best time of day to test for diseases ... medicines effectively. , Researchers from the University of Surrey ... links between sleep deprivation, body clock disruption and metabolism, ...
(Date:7/10/2014)... have shelled out for crude 3-D glasses, polarized ... experience. These basic devices, used to trick the ... soon be rendered obsolete with the introduction of ... researchers. , TAU doctoral students Yuval Yifat, Michal ... holography based on nanoantennas that could be used ...
Breaking Biology Technology:Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 2Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 3Biotech & Biopharm Supply Chain Management Executives Launch BSMA in San Diego 4International Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, Module Integration) Market - Forecasts to 2019 2Time of day crucial to accurately test for diseases, new research finds 2Projecting a 3-dimensional future 2Projecting a 3-dimensional future 3
... Distribution System Will Continue to Fuel Growth and Generate CashNEW ... ) Vice President James C. Borel said today he expects ... market share by at least 1 to 2 points in ... the DuPont Agriculture & Nutrition segment an average of at ...
... Feb. 10 Compendia Bioscience, Inc. today announced the ... percent renewal rate from its customers. New customers and ... three of the Top 10 pharmaceutical companies, led to ... consecutive year. Compendia,s core product, Oncomine(TM), has become a ...
... Sundia MediTech, a CRO,company based in Shanghai, China ... announced their 2 year collaborative success in new ... San Diego,USA. So far their collaboration has achieved ... identified within the next 3 months. Dr. ...
Cached Biology Technology:DuPont Expects Increased Global Seed Corn Share, Continued Agriculture Earnings Growth 2DuPont Expects Increased Global Seed Corn Share, Continued Agriculture Earnings Growth 3DuPont Expects Increased Global Seed Corn Share, Continued Agriculture Earnings Growth 4DuPont Expects Increased Global Seed Corn Share, Continued Agriculture Earnings Growth 5On Third Anniversary, Compendia Bioscience Announces Continued Revenue Growth, Major Long-Term Customer Contracts and Forecasts Profitability 2Sundia MediTech and Xcovery Announce Big Success in Drug Discovery 2
... immunowash microplate washer 100-240 V, is used ... U-, or V-bottom wells. The immunowash microplate ... needle positions to an accuracy of 0.1 ... overflow washing. It can store up to ...
... compact benchtop and stackable multi-function incubator. ... a large display screen to accurately ... circulation inside to evenly distribute temperature ... easily calibrated from the microprocessor controller. ...
... RM is specifically designed as a high ... new variable mass compensation allows high shaking ... better aeration and, therefore, faster growth and ... is ideal when high reproducibility is critical ...
...
Biology Products: