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:11/18/2014)... , Nov. 18, 2014   EyeLock Inc. ... solutions, and MorphoTrust USA (Safran), a ... today announced a strategic partnership to offer comprehensive ... vehicle administration (MVA), airport screening and financial services ... solutions, MorphoTrust serves consumers through a nationwide network ...
(Date:11/11/2014)... Nov. 11, 2014  Forensicon, Inc., a ... pleased to announce the promotion of Yaniv Schiff ... Digital Forensics. In Schiff,s new role as Director, he ... of digital forensics examiners and provide leadership within the ... - http://photos.prnewswire.com/prnh/20141110/157719 Schiff joined ...
(Date:11/7/2014)... conjunction with the Glendale and ... the Verdugos has announced the " GLENDALE - ... to keep the Verdugo Regional Crime Lab operational after its ... existence, the Lab has processed more than 400 DNA samples, ... "Because our number one priority is the wellbeing of ...
Breaking Biology News(10 mins):EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2
... College of Agricultural Sciences will lead a seven-year, $14.5 ... Cui, professor of entomology, is the principal investigator for ... International Centers of Excellence for Malaria Research announced by ... of the National Institutes of Health. About 40 percent ...
... British Mycological Society, in association with Elsevier, the world-leading ... the final programme for the 9th Mycological Congress IMC9: ... 4 years at a different venue around the world. ... comprehensive programme encompasses the latest research in all areas ...
... AFRICAN national parks like Masai Mara and the Serengeti ... 59 per cent, according to a study published in ... thousands of tourists each year hoping to spot Africa,s ,Big ... the research shows that urgent efforts are needed to secure ...
Cached Biology News:Penn State to lead new international Center Of Excellence for malaria research 2Penn State to lead new international Center Of Excellence for malaria research 3The biology of fungi -- 1.5 million species -- 1 congress 2Africa's national parks hit by mammal declines 2
(Date:11/24/2014)... November 24, 2014 Five American ... Rashid Al Maktoum Awards for Medical Sciences", in its ... United Arab Emirates , on 15 December 2014. ... The Carter Center which won the Hamdan ... involved in numerous programs that aim to improve health ...
(Date:11/24/2014)... , Nov. 24, 2014   Veracyte, Inc. (Nasdaq: ... Anderson , president and chief executive officer, will present in ... Annual Healthcare Conference on Tuesday, December 2, 2014 at ... The live audio webcast and subsequent replay may ... Please connect to the website at least 15 minutes prior ...
(Date:11/24/2014)... Massachusetts (PRWEB) November 24, 2014 ... Panels ” from METTLER TOLEDO demonstrates how to ... , Power analytics and sample panel design can ... cycle chemistry and protect against corrosion and deposition. ... up a significant amount of panel space. Additionally, ...
(Date:11/22/2014)... 2014 Two new educational webinars hosted by ... for ALS research and how the pharmaceutical industry can make ... Bucket Challenge: Where Does the ALS Money Go? , Featuring ... 2014, Time: 1:30pm ET, Register to attend , ... Merit Cudkowicz, Julianne Dorn Professor of Neurology at Massachusetts General ...
Breaking Biology Technology:Five US Winners Among Recipients of Hamdan Medical Awards 2Veracyte to Present at the Piper Jaffray 26th Annual Healthcare Conference 2New Video Shows How to Simplify Cycle Chemistry Sample Panels to Save Time and Costs 2DrugDev Webinars in December to Explore What Comes Next for ALS Research and How We Can Make Life Easier for Clinical Sites 2
... , WASHINGTON, Sept. 15 BIO Ventures ... was elected chairman of the global health non-profit,s Board of Directors. ... its inception in 2004. , , ... with Melinda Moree and our board. Up to now, biotech ...
... , BASKING RIDGE, N.J., Sept. 15 Regado ... aptamers with active control agents, announced today that Chris ... America Conference 2009 in San Francisco, CA at 3:15 on ... include an overview of the Company,s pipeline with emphasis on ...
... , , , , ... 15 Treatment of hospital-related infections in the U.S. costs up to ... to medical devices implanted in patients. Until now, efforts to control drug-resistant ... New hydrogel mats developed by collaborators Pat Mather and Dacheng Ren ...
Cached Biology Technology:BVGH Announces New Board Chair 2Regado Biosciences to Present at the BioPharm America 2009 Conference on September 17, 2009 2New Antimicrobial Webs Sterilize Medical Implants for 14 Days 2
Preparation TW--Compatibility: no end cap seals -Hybridization Tube for Hybrigene -Comp Dim: 240 80 mm -Material: borosilicate glass -Mfr Desig: Techne FHB-15...
... Biometra TProfessional Thermocycler combines top performance with ... achieves high speed and unparalleled temperature uniformity. ... providing programming in a spreadsheet or alternatively ... Smart Lid opens on the push of ...
...
... provide a rapid and simple method for recovering ... 10 kb) from stained agarose gels or EtBr ... an agarose gel and loaded into the spin ... are a series of membranes and filters that ...
Biology Products: