Navigation Links
How diving leatherback turtles regulate buoyancy
Date:11/12/2010

Leatherback turtles are remarkably versatile divers. Routinely diving to depths of several hundred meters, leatherbacks are occasionally known to plunge as deep as 1250m. The animals probably plumb the depths to avoid predators, search for prey and avoid heat in the tropics. However it wasn't clear how these mammoth reptiles regulate their buoyancy as they plunge down. Sabrina Fossette from Swansea University explains that no one knew how the turtles descended so far: do they swim down or become negatively buoyant and plummet like a stone? Curious to find out how nesting leatherbacks plumb the depths, Rory Wilson and his long time collaborator, Molly Lutcavage, decided to deploy data loggers containing triaxial accelerometers on leatherback females as they nested on beaches on St Croix in the US Virgin Islands. They found that leatherbacks probably regulate their buoyancy by varying the amount of air they inhale just before submersion and publish their discovery on Nov. 12, 2010 in the Journal of Experimental Biology at http://jeb.biologists.org/cgi/content/abstract/213/23/4074.

'When you first see a leatherback turtle coming out of the water it's like a dinosaur it's really impressive,' says Fossette, having just returned from collecting data in the Indian Ocean. According to Fossette, Andy Myers, Nikolai Liebsch and Steve Garner attached accelerometers to five females as they laid their eggs, and then waited 8-12 days for the reptiles to return to the beach to lay more eggs having headed out to sea. Retrieving the accelerometers, the team found that only two of the five had collected usable data, but the data loggers that functioned showed 81 dives that the team could analyse ranging from 64m down to 462m.

Back in Swansea, Fossette, Adrian Gleiss, Graeme Hays and Rory Wilson analysed the temperature, pressure and acceleration data collected by the loggers. Desc
'/>"/>

Contact: Kathryn Knight
kathryn@biologists.com
44-078-763-44333
The Company of Biologists
Source:Eurekalert

Page: 1 2

Related biology news :

1. Negligible impact on public safety from shark cage diving operations
2. Scientists identify worlds largest leatherback turtle population
3. Scientists call for protected swimways for the endangered leatherback sea turtle
4. Commercial fishing estimated to kill millions of sea turtles
5. How can accidental captures of loggerhead turtles be reduced?
6. Turtles Christmas journey tracked by scientists
7. National Science Foundation Fellow uses ultrasound to research bog turtles
8. Turtles no longer turned into souvenirs
9. Cost of hatchling turtles dash for freedom
10. No place like home: New theory for how salmon, sea turtles find their birthplace
11. Turtles alter nesting dates due to temperature change says ISU researcher
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... The University of Chicago is creating a new ... at the University,s Institute for Molecular Engineering and ... million donation from the Millicent and Eugene Bell ... will reside within the Institute for Molecular Engineering. ... research project at the MBL,s Eugene Bell Center ...
(Date:7/11/2014)... Salk Institute for Biological Studies, BGI, and other ... and reliability of the existing targeted gene correction ... which could significantly increased gene-correction efficiency in human ... online in Cell Stell Cell provides ... therapy. , The combination of stem cells and ...
(Date:7/11/2014)... July 11, 2014 The increased risk of kidney ... in resuscitation fluids reflects the mass of HES molecules, ... , official journal of the International Anesthesia Research Society ... the harmful effect of HES on cultured human renal ... Dr Christian Wunder and colleagues of University Hospital Wrzburg, ...
Breaking Biology News(10 mins):New professorship in tissue engineering links molecular engineering, marine biology 2A new genome editing method brings the possibility of gene therapies closer to reality 2In lab studies, hydroxyethyl starch has direct harmful effects on kidney cells 2
... The first analysis of the healthful antioxidant content ... South America concludes that some of these fruits have ... renowned as "super fruits" sold throughout the United ... protection against heart disease, cancer and other conditions, the ...
... not rely on oxygen may have played an important role ... a theory that UChicago researcher Albert Colman is testing in ... He has found that bacteria at the site produce ... scientists must take into account as they attempt to reconstruct ...
... Planes were grounded all over Europe when the Eyjafjallajkull volcano erupted ... fly zone was really necessary. And the only way to find ... cloud - a potentially fatal experiment. , Now a team ... Iceland have developed a protocol for rapidly providing air traffic authorities ...
Cached Biology News:Cold case: Siberian hot springs reveal ancient ecology 2Cold case: Siberian hot springs reveal ancient ecology 3Novel ash analysis validates volcano no-fly zones 2
(Date:7/10/2014)... 10, 2014 Understanding the need for ... lines, and the gap that currently exists in this ... its industry-leading portfolio of validated ion channel and GPCR ... cell lines, as ion channels control many critical physiological ... activity creates the potential to treat a variety of ...
(Date:7/10/2014)... Los Angeles, CA (PRWEB) July 10, 2014 ... Analytical and Bioanalytical techniques during 18-20 August, 2014 at ... to critically review the recent developments in Analytical & ... across the globe. , Speaking on this occasion, Dr. ... that Analytica Acta conference is a remarkable one ...
(Date:7/10/2014)... July 10, 2014 On July ... Medvedev , presented Russia,s first ... . The Company is developing a unique project called ... BIOCAD develops a number of innovative drugs based on ... The ceremony took place at the International Exhibition "Innoprom ...
(Date:7/10/2014)...   Ceres, Inc . (Nasdaq: CERE ... financial results for the three months ended May 31, ... Ceres reported that the company and its customers ... season in Brazil, which concluded in June, despite dry ... areas for part of the growing season. Yields of ...
Breaking Biology Technology:Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 2Leader in Ion Channel Research Announces Newly Validated and Re-Engineered Cells 3A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 3Ceres Announces Fiscal Third Quarter 2014 Financial Results 4Ceres Announces Fiscal Third Quarter 2014 Financial Results 5Ceres Announces Fiscal Third Quarter 2014 Financial Results 6Ceres Announces Fiscal Third Quarter 2014 Financial Results 7Ceres Announces Fiscal Third Quarter 2014 Financial Results 8Ceres Announces Fiscal Third Quarter 2014 Financial Results 9
... are today,s highlights from the AACE Annual Meeting & Clinical Congress in Boston : ... (Logo: http://www.newscom.com/cgi-bin/prnh/20090324/DC88061LOGO-b ) , ... Research Shows First-of-Its-Kind Hydrogel Decreases Obese Patients, Desire for Food   , ... New research indicates that a first-of-its-kind, superabsorbent hydrogel significantly increased the post-meal ...
... NEW YORK and SCOTTSDALE, Ariz. , ... Amex: NBS ), an international biopharmaceutical,company with operations ... BioSciences,Inc., a wholly owned subsidiary of IR BioSciences Holdings, ... entered into a,Collaborative Research Agreement, focused on the development ...
... ... Biotechnology Companies , ... Rochester, New York (PRWEB) April 22, 2010 -- iCardiac Technologies, Inc., a provider of ... has awarded iCardiac a cardiac safety study leveraging iCardiac’s COMPAS technology platform including advanced ...
Cached Biology Technology:Thursday News Highlights from the American Association of Clinical Endocrinologists (AACE) 19th Annual Meeting and Clinical Congress 2Thursday News Highlights from the American Association of Clinical Endocrinologists (AACE) 19th Annual Meeting and Clinical Congress 3NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 2NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 3NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 4NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 5NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 6NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 7Another Top 10 Pharmaceutical Company Awards Cardiac Safety Study to iCardiac 2
...
...
... Anti-β-Tubulin IV Recognizes an epitope ... of β-tubulin isotype IV. No ... is observed. ascites fluid synthetic ... sequence of β-tubulin isotype IV, ...
... Finnpipette BioControl is a major step ... complete liquid handling system - with ... tip cone modules. All five single ... modules fit one handle. The lightweight ...
Biology Products: