Navigation Links
Great white's mighty bite revealed
Date:8/3/2008

Using sophisticated computer modelling techniques they have also calculated that the bite force of the great white's extinct relative, the gigantic fossil species Carcharodon megalodon (also known as Big Tooth) is the highest of all time, making it arguably the most formidable carnivore ever to have existed.

Shark researchers from the University of New South Wales, Newcastle University, NSW Department of Primary Industries Fisheries (Australia) and University of California (USA) reveal unprecedented information about the feeding habits of the two carnivores by analysing anatomical and biomechanical data from their skull and muscle tissues.

They generated 3-Dimensional models the skull of a 2.4-metre male great white shark on the basis of multiple x-ray images generated by a computerized tomography (CT) scanner.

Using novel imaging and analysis software and a technique known as "finite element analysis", the team reconstructed the great white's skull, jaws and muscles, remodelling them as hundreds of thousands of tiny discrete, but connected parts.

They then digitally "crash tested" this computer model to simulate different scenarios and reveal the powerful bite of the fearsome predator, as well as the complex distributions of stresses and strains that these forces impose on the shark's jaws.

It was found that the largest great whites have a bite force of up to 1.8 tonnes. By comparison, a large African lion can produce around 560 kg of bite force and a human approximately 80 kg making the great white's bite more than 20 times harder than that of a human. UNSW's Steve Wroe, the study's lead author, says the great white is without a doubt one of the hardest biting creatures alive, possibly the hardest.

"Nature has endowed this carnivore with more than enough bite force to kill and eat large and potentially dangerous prey," he says. "Pound for pound the great whites' bite is not particularly impressive, but the sheer size of the animal means that in absolute terms it tops the scales. It must also be remembered that its extremely sharp serrated teeth require relatively little force to drive them through thick skin, fat and muscle". The scientists also found that although shark's jaws are comprised of elastic cartilage (as opposed to the bony jaws of most other fish), this did not greatly reduce the power of its bite.

Wroe and colleagues applied the same methodology to estimate the bite force of the gigantic Carcharodon megalodon, which may have grown to 16 metres in length and weighed up to 100 tonnes -- at least 30 times as heavy as the largest living great whites.

They predict that it could generate between 10.8 to 18.2 tonnes of bite force. Fossil evidence suggests that Big Tooth was an active predator of large whales that immobilised its huge prey by biting off their tail and flippers before feeding at will.

A comparison of Tyrannosaurus rex with megalodon suggests that the great Tyrant Lizard was no match for the giant shark. " Estimates of maximum bite force for T. rex are around 3.1 tonnes, greater than for a living white shark, but puny compared to Big Tooth."


'/>"/>

Contact: Dr. Stephen Wroe
s.wroe@unsw.edu.au
61-425-330-273
University of New South Wales
Source:Eurekalert

Related biology news :

1. Childhood obesity indicates greater risk of school absenteeism, Penn study reveals
2. Clones on task serve greater good, evolutionary study shows
3. Great Plains historical stability vulnerable to future changes
4. RIT to study air pollution and greenhouse gas emissions in the Great Lakes region
5. Meteor no longer prime suspect in great extinction
6. Great Ape Trust awards $127,000 for international conservation efforts
7. Great potential to improve collection, recycling of Europes electronic waste, says UN report
8. New report finds great potential for Swedish medical technology
9. Great apes endangered by human viruses
10. Barnacles go to great lengths to mate
11. Great Ape Trust signs agreement with Universitas Nasional in Jakarta
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/23/2017)... 23, 2017  Hunova, the first robotic gym for the rehabilitation and ... launched in Genoa, Italy . The first 30 robots ... the USA . The technology was developed and patented ... the IIT spin-off Movendo Technology thanks to a 10 million euro investment ... please click: ...
(Date:4/19/2017)... , April 19, 2017 ... its vendor landscape is marked by the presence of ... is however held by five major players - 3M ... these companies accounted for nearly 61% of the global ... leading companies in the global military biometrics market boast ...
(Date:4/11/2017)... BEACH GARDENS, Fla. , April 11, 2017 ... identity management and secure authentication solutions, today announced ... contract by Intelligence Advanced Research Projects Activity (IARPA) ... for IARPA,s Thor program. "Innovation has ... onset and IARPA,s Thor program will allow us ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... States multicenter, prospective clinical study that demonstrates the accuracy of the FebriDx® ... identifying clinically significant acute bacterial and viral respiratory tract infections by testing ...
(Date:10/11/2017)... N.C. (PRWEB) , ... October 11, 2017 , ... ... ARCS® Foundation President Andi Purple announced Dr. Suneel I. Sheikh, the co-founder, ... ( ASTER Labs ), Inc. has been selected for membership in ARCS ...
(Date:10/11/2017)... BALTIMORE, Md. (PRWEB) , ... October 11, 2017 ... ... for digital pathology, announced today it will be hosting a Webinar titled, “Pathology ... of  Advanced Pathology Associates , on digital pathology adoption best practices and how ...
(Date:10/11/2017)... ... October 11, 2017 , ... A ... pregnancy rates in frozen and fresh in vitro fertilization (IVF) transfer ... age to IVF success. , After comparing the results from the fresh and ...
Breaking Biology Technology: