Navigation Links
Sharks prefer to sneak up from behind, study shows
Date:12/5/2013

"Never turn your back on a shark" is the take home message from an article published in Springer's journal Animal Cognition. Erich Ritter of the Shark Research Institute and Raid Amin of the University of West Florida in the US contend that sharks can comprehend body orientation and therefore know whether humans are facing them or not. This ability helps sharks to approach and possibly attack their prey from the blind side a technique they prefer.

To hunt successfully a predator needs to correctly perceive the body form, size and movement of its potential prey. Studies confirm this is also true when sharks hunt. Descriptions of a shark's approach to typical prey, as well as humans, indicate that these predatory fish prefer to avoid the field of vision. In other words, a shark would tend to approach a person from behind. These observations underlie the yet-untested assumption that sharks are able to identify human body orientation and can use such information in a self-serving manner.

Ritter and Amin therefore set about to deepen the understanding of how sharks select an approach pattern when interacting with humans. A test was designed to evaluate if sharks show a measurable preference based on body orientation when approaching a person, and if they choose a certain swim pattern when close to a human being. In one experiment, a diver in full scuba gear was positioned on the sea floor in a kneeling position, looking forward. In another, two divers kneeled back-to-back to eliminate the blind area.

To ensure the safety of the test subjects, the preferences of the Caribbean reef shark (Carcharhinus perezi) were tested. The animal is a typical type of reef shark frequently encountered by divers in the Bahamas, and is not considered to be a dangerous species regarding incidents with humans.

They found that when approaching a single test-subject, significantly more sharks preferred to swim outside the person's field
'/>"/>

Contact: Alexander Brown
alexander.brown@springer.com
212-620-8063
Springer Science+Business Media
Source:Eurekalert

Page: 1 2

Related biology news :

1. New finding shows that mother sharks home to their birthplace to give birth, like salmon and sea turtles
2. Sharks stun sardine prey with tail-slaps
3. Great white sharks
4. Satellite tagging maps the secret migration of white sharks
5. CITES makes historic decision to protect sharks and rays
6. CITES: Crucial for conserving sharks and rays
7. New research on migratory behavior of oceanic whitetip sharks can help shape conservation strategies
8. Scientists using holiday snaps to identify whale sharks
9. Baby sharks stay still to avoid being detected by predators
10. Sharks: Bad creatures or bad image?
11. Public sightings suggest increase in basking sharks in British waters
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/27/2014)... discovered a new species of mayfly in the southern Western ... In fact, this is the first time that any mayfly ... in peninsular India. , The new species, called Labiobaetis ... for his substantial contribution to the understanding of the Ephemeroptera ... a study that describes the new mayfly in the ...
(Date:7/27/2014)... In an age of "big data," a single computer ... tasks must instead be distributed across a cluster of ... how Facebook and Google mine your web history to ... Netflix recommend your next favorite book or movie. But ... , New technologies for monitoring brain activity are generating ...
(Date:7/25/2014)... false-color image from the Terra satellite show the different areas ... in Eastern Russia. The burn scars show up as ... wildfires have broken across the remote parts of Eastern Russia ... from the MODIS instrument, it is still possible to ... recent image features noted below show the devastating number of ...
Breaking Biology News(10 mins):New tools help neuroscientists analyze 'big data' 2New tools help neuroscientists analyze 'big data' 3New tools help neuroscientists analyze 'big data' 4New tools help neuroscientists analyze 'big data' 5
... microbes in the Earth,s oceans consume 90 percent of ... in ice preventing large amounts of methane from ... two microbes that accomplish this feat do not simply ... sulfur compound instead. "The dominant role anaerobic oxidation ...
... 16, 2008) -- Two major federal grants have been awarded ... New York City. Dr. Kenneth W. Griffin is ... the National Institute on Drug Abuse (NIDA) for research into ... delivered to urban minority youth attending New York City middle ...
... medications can delay the onset of Alzheimer,s disease, but none ... makes early detection the key to Alzheimers patients maintaining a ... Now, a new device developed by the Georgia Institute ... a brief, inexpensive test that could be administered as part ...
Cached Biology News:Paired microbes eliminate methane using sulfur pathway 22 federal public health grants awarded to Weill Cornell Medical College 2Portable device quickly detects early Alzheimer's 2Portable device quickly detects early Alzheimer's 3
(Date:7/28/2014)... COLLEGE STATION, Texas , July 28, 2014   The ... be a 177-key, 4-star boutique hotel in the heart of The ... Texas.  Photo - http://photos.prnewswire.com/prnh/20140725/130455 ... hotel within ATLAS , The ... standard rooms and suites, a sleek restaurant and bar, a wellness ...
(Date:7/25/2014)... NY (PRWEB) July 26, 2014 ... Review, H2, 2014" provides data on the Ischemic ... report provides elemental information and data relating to ... Stroke. , View full global Ischemic Stroke Research ... includes an overview of the trial numbers and ...
(Date:7/25/2014)... , July 25, 2014 Research ... "Global Metabolomics Market 2014-2018" report to ... Metabolomics or Metabonomics is the ... has become a new experimental technique that is ... environmental sciences. Metabolites are small molecules that are ...
(Date:7/25/2014)... 2014 Lawrence Livermore scientists Charles Westbrook ... list of " The World's Most Influential Scientific Minds ... 3,000 researchers who were identified by analyzing citation data ... published the highest-impact work (2002-2012 and 2012-2013). The two ... combustion modeling . , "This recognition is a great ...
Breaking Biology Technology:Texas' Biocorridor Announces the Atlas Hotel, Centerpiece of Mixed Use Community for Biotech Industry 2Texas' Biocorridor Announces the Atlas Hotel, Centerpiece of Mixed Use Community for Biotech Industry 3Texas' Biocorridor Announces the Atlas Hotel, Centerpiece of Mixed Use Community for Biotech Industry 4Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 2Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 3Global Metabolomics Market 2014-2018: Key Vendors are Agilent, Bio-Rad, Bruker, Human Metabolome and Metabolon 2Scientists Burst onto Influential List for Combustion Research 2Scientists Burst onto Influential List for Combustion Research 3Scientists Burst onto Influential List for Combustion Research 4
... To Receive $2 Million Milestone Payment, CARLSBAD, ... ISIS ) announced today that Bristol-Myers,Squibb Company ... from the companies,collaboration as a development candidate. As ... payment. The two companies have an ongoing,collaboration to ...
... Now Providing ... Medicaid Coverage for Trofile, SOUTH SAN FRANCISCO, ... ) today announced that New York,Medicaid has established coverage and ... candidacy for Pfizer,s new,HIV anti-viral medication Selzentry(TM) (maraviroc)., Initiated ...
... 7, 2008 Martek,Biosciences Corporation announced today that ... Maryland has entered a Final Judgment and Order,of ... action,brought on behalf of certain purchasers of Martek ... federal securities laws and arose out of,allegations, among ...
Cached Biology Technology:BRISTOL-MYERS SQUIBB SELECTS ISIS DRUG TARGETING PCSK9 AS DEVELOPMENT CANDIDATE FOR PREVENTION AND TREATMENT OF CARDIOVASCULAR DISEASE 2BRISTOL-MYERS SQUIBB SELECTS ISIS DRUG TARGETING PCSK9 AS DEVELOPMENT CANDIDATE FOR PREVENTION AND TREATMENT OF CARDIOVASCULAR DISEASE 3BRISTOL-MYERS SQUIBB SELECTS ISIS DRUG TARGETING PCSK9 AS DEVELOPMENT CANDIDATE FOR PREVENTION AND TREATMENT OF CARDIOVASCULAR DISEASE 4New York Medicaid Program Establishes Coverage for Trofile(TM) 2New York Medicaid Program Establishes Coverage for Trofile(TM) 3New York Medicaid Program Establishes Coverage for Trofile(TM) 4Martek Announces Final Judgment and Order of Dismissal in Class Action 2
Mouse monoclonal antibody to QARS - glutaminyl-tRNA synthetase...
ABgene® supplies a 94kDa ultra-pure recombinant thermostable DNA polymerase obtained by high level expression of the Taq DNA polymerase gene in E. coli....
Heavy-duty rim. Especially recommended as a titration flask. Corning5100. capacity 250 mL Special grade: student grade...
... CLS number is a ... to easily match Cornings ... no availability yet, please ... Sigma-Aldrich number (Z71,448-8) or ...
Biology Products: