Navigation Links
New UF study shows some sharks follow 'mental map' to navigate seas
Date:3/9/2011

ore of Oahu, Hawaii, in 1999, nine blacktip reef sharks in the lagoons of Palmyra Atoll in the Central Pacific Ocean in 2009, and 15 thresher sharks off the southern California coast in 2010. The animals were followed for at least seven hours and the statistical analysis determined whether the sharks were moving randomly or toward a known goal.

While tiger sharks have acute senses of sight, hearing and smell, their home range covers hundreds of square miles, including resource spots outside their sensory range. As bounce divers, they also almost continuously swim between the surface and about 250 to 330 feet below.

"At times these tiger sharks were swimming across a deep channel, open ocean, often at night," Papastamatiou said. "So the question is, 'What are they orienting to in such a seemingly featureless environment?' It really just highlights how impressive their navigation can be."

Researchers determined adult thresher sharks could orient at greater distances than juveniles, most likely because of their advanced development, Papastamatiou said. The study found blacktip reef sharks only traveled randomly, which has to do with their small home range compared to larger areas covered by thresher and tiger sharks.

Papastamatiou speculated the "mental map" the sharks create may have to do with their ability to sense magnetic fields.

"Probably the most interesting sense and still the most misunderstood is magnetic reception," Papastamatiou said. "There is an increasing amount of evidence that lots of, if not all animals, can to a certain degree detect magnetic fields. That is something that could potentially be used over very large distances because there are gradients in the earth's magnetic field and they could use those as landmarks so even swimming through open ocean, which seems featureless to us, may not be featureless to sharks if they could detect these magnetic fields."

He said the research would potent
'/>"/>

Contact: Yannis Papastamatiou
ypapastamatiou@flmnh.ufl.edu
352-273-1955
University of Florida
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Long-term study shows effect of climate change on animal diversity
2. £2 million study to reveal workings of dementia genes
3. New study looks to define evangelicals and how they affect polling
4. CU-Boulder study suggests air quality regulations miss key pollutants
5. Researchers study acoustic communication in deep-sea fish
6. Study reveals homeowner perceptions in fire-prone areas
7. Researchers study how pistachios may improve heart health
8. Study: urban black bears live fast, die young
9. New study indicates link between weight gains during pregnancy and dieting history
10. Study reveals specific gene in adolescent men with delinquent peers
11. Sweat it out: UH study examines ability of sweat patches to monitor bone loss
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/11/2014)... 10, 2014  That blood pressure plays a role in ... – the medical term for high blood pressure – was ... the inflatable cuff that,s used in measuring blood pressure was ... nothing new about hypertension, its triggers and its effects. In ... condition and the best ways to treat it. ...
(Date:12/10/2014)... You,ve been here before: you desperately need to ... password, site key or the answer to your secret question. ... Today, Hoyos Labs , a digital ... finally put an end to the frustration that comes with ... 1U leverages a user,s smartphone to acquire his or her ...
(Date:12/10/2014)...  Wake Forest Baptist Medical Center today announced plans for ... Medicine. Funding for this $50 million capital project is ... publicly launched next summer. The medical ... series R.J. Reynolds Tobacco Company complex, adjacent to 525@vine ... with plans to be ready to welcome medical students ...
Breaking Biology News(10 mins):Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4
... New knowledge points to the fact that a genetically ... skin barrier, plays a decisive role in the origin ... 3000 school-children scientists of the Helmholtz Zentrum Mnchen and ... the German population carry variations of the filaggrin gene, ...
... (MS), neuroradiologists and neurologists of the University hospitals of ... tissue damage, most of which had remained unrecognized up ... medium, Gadofluorine M, in magnetic resonance imaging. The scientists ... the renowned medical journal Brain . ...
... , Now that Olympia is approaching, the Chinese authorities ... large cities with different measures. For example, the car ... ordered not to use 70 percent of all company ... even or odd days - in accordance with their ...
Cached Biology News:When our protective armor shows weakness 2Multiple Sclerosis: new MRI contrast medium enables early diagnosis in animal model 2GKSS membranes reduce air pollution in Beijing 2
(Date:12/24/2014)... (PRWEB) December 23, 2014 GMO corn ... biotechnology company, Syngenta, are in the process of being ... The consolidated case is In Re: Syngenta AG MIR ... District Court for the District of Kansas. , Management ... been handed over to U.S. District Judge John W. ...
(Date:12/24/2014)... The report provides basic ... definition, classification, application and industry overview. This ... and product cost structure. Production is separated ... also covers upstream raw materials, equipment, downstream ... and proposals. In the end, the export ...
(Date:12/24/2014)... AUSTIN, Texas , Dec. 23, 2014 /PRNewswire/ ... solutions company focused on gynecologic disease, announced today ... W. Schuler , Birchview Fund LLC and several ... million of unregistered shares of Vermillion,s common stock ... common stock in a private placement.  ...
(Date:12/22/2014)... PA & Brussels (PRWEB) December 22, 2014 ... (CfPIE), the global leader of technical training across ... Society for Clinical Data Management (SCDM) to provide ... and certification programs —providing access to the more ... partnership extends SCDM members with 10% off when registering ...
Breaking Biology Technology:Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3
... spotlight on the,ever-growing field of life sciences, Larta Institute,s ... in the midst of the dark backdrop of the,current ... to,focus on brilliant entrepreneurs in the life sciences, even ... years, through good,economic times and bad, the passion and ...
... 14 Access Pharmaceuticals, Inc.,(OTC Bulletin Board: ACCP) announced ... & Renshaw 5th Annual Global Healthcare Conference to be ... in Monte Carlo, Monaco.,Jeffrey B. Davis, CEO of Access ... 3:10 pm local time, 9:10 am Eastern time and ...
... May 14 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc.,("Oncolytics") ... has,received a letter of approval from the ... for its Clinical Trial Application (CTA),to begin ... administration of,REOLYSIN(R) in combination with paclitaxel and ...
Cached Biology Technology:Betting on Change - The Venture Forum in 2008 2Betting on Change - The Venture Forum in 2008 3Access Pharmaceuticals to Present at the Rodman & Renshaw 5th Annual Global Healthcare Conference 2Oncolytics Biotech Inc. Announces U.K. Phase II Clinical Trial Investigating REOLYSIN(R) in Combination with Paclitaxel and Carboplatin 2
... host strains are K-12 derivatives that have ... and glutathione reductase (gor) genes, which greatly ... Studies have shown that expression in Origami(DE3) ... another host even though overall expression levels ...
Recommend to use at 1000X dilutions for cell culture (e.g. Add 1 ul to 1 ml of culture medium.)...
... Kit, 1 kit. Convenient way ... Conjugations are carried out under mild ... Dyes are packaged in premeasured amounts ... Category: Blotting & Labeling & Detection, ...
Recombinant Human Erythropoietin (Tissue Culture Grade)...
Biology Products: