Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Great white's mighty bite revealed

06.08.2008
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."

Dr. Stephen Wroe | EurekAlert!
Further information:
http://www.unsw.edu.au

More articles from Information Technology:

nachricht Intelligent maps will help robots navigate in your home
19.06.2018 | Schwedischer Forschungsrat - The Swedish Research Council

nachricht Football through the eyes of a computer
14.06.2018 | Universität Konstanz

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

Im Focus: Photoexcited graphene puzzle solved

A boost for graphene-based light detectors

Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Carbon nanotube optics provide optical-based quantum cryptography and quantum computing

19.06.2018 | Physics and Astronomy

How to track and trace a protein: Nanosensors monitor intracellular deliveries

19.06.2018 | Life Sciences

New material for splitting water

19.06.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>