Navigation Links
New evidence for warm-blooded dinosaurs
Date:7/18/2013

University of Adelaide research has shown new evidence that dinosaurs were warm-blooded like birds and mammals, not cold-blooded like reptiles as commonly believed.

In a paper published in PLoS ONE, Professor Roger Seymour of the University's School of Earth and Environmental Sciences, argues that cold-blooded dinosaurs would not have had the required muscular power to prey on other animals and dominate over mammals as they did throughout the Mesozoic period.

"Much can be learned about dinosaurs from fossils but the question of whether dinosaurs were warm-blooded or cold-blooded is still hotly debated among scientists," says Professor Seymour.

"Some point out that a large saltwater crocodile can achieve a body temperature above 30C by basking in the sun, and it can maintain the high temperature overnight simply by being large and slow to change temperature.

"They say that large, cold-blooded dinosaurs could have done the same and enjoyed a warm body temperature without the need to generate the heat in their own cells through burning food energy like warm-blooded animals."

In his paper, Professor Seymour asks how much muscular power could be produced by a crocodile-like dinosaur compared to a mammal-like dinosaur of the same size.

Saltwater crocodiles reach over a tonne in weight and, being about 50% muscle, have a reputation for being extremely powerful animals.

But drawing from blood and muscle lactate measurements collected by his collaborators at Monash University, University of California and Wildlife Management International in the Northern Territory, Professor Seymour shows that a 200 kg crocodile can produce only about 14% of the muscular power of a mammal at peak exercise, and this fraction seems to decrease at larger body sizes.

"The results further show that cold-blooded crocodiles lack not only the absolute power for exercise, but also the endurance, that are evident in
'/>"/>

Contact: Roger Seymour
roger.seymour@adelaide.edu.au
61-883-135-596
University of Adelaide
Source:Eurekalert

Page: 1 2

Related biology news :

1. Evidence suggests Antarctic crabs could be native
2. ACRG and BGI report new evidence for the genetic bases of liver cancer
3. First international collaboration to showcase latest body of evidence of dairy health benefits
4. First evidence that the genome can adapt to temperature changes
5. Evidence of host adaptation of avian-origin influenza A virus
6. New evidence on how fluoride fights tooth decay
7. AACR news: Studies show increasing evidence that androgen drives breast cancer
8. New evidence dinosaurs were strong swimmers
9. New evidence shows PubMed Central undermines journal usage
10. New evidence that comets could have seeded life on Earth
11. Increasing evidence links high glycemic index foods and dairy products to acne
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... Cell scientists have set a "mouse TRAP" to capture ... a recent study published in the Journal of ... a technique called TRAP to extract cellular and genetic ... by scientists at the Rockefeller Institute for Medical Research ... the protein-making machinery, or ribosomes, of the cell type ...
(Date:7/11/2014)... international team of researchers, including scientists from the Max ... a reported a major step in understanding photosynthesis, the ... maintains the oxygen in its atmosphere and which is ... earth. , The researchers report the first direct ... namely the step in which a specific protein complex, ...
(Date:7/11/2014)... the marginal division of the striatum is also ... impact degree of substance P in the striatal ... Yu and his team, College of Biophotonics, South ... that substance P receptor, neurokinin 1 was highly ... of normal rats. Unilateral or bilateral injection of ...
Breaking Biology News(10 mins):A first direct glimpse of photosynthesis in action 2
... Women who are satisfied with everyday life and ... alcohol, reveals a thesis from the University of Gothenburg, ... thesis, has looked at how everyday life affects alcohol ... in Gothenburg (WAG) population study which has been ongoing ...
... immune system can affect healthy people,s personality traits as ... suicidal behaviour, reveals a thesis from the University of ... system and is responsible for defending humans against infection ... is therefore vital for our survival. Research has demonstrated ...
... The more allergies one has, the lower the risk ... published in Cancer Epidemiology, Biomarkers & Prevention , ... Researchers from the University of Illinois at Chicago, ... use for 419 patents with glioma and 612 cancer-free ...
Cached Biology News:Women involved in leisure activities drink less alcohol 2Genes of the immune system are associated with increased risk of mental illness 2Allergies lower risk of low- and high-grade glioma 2
(Date:7/10/2014)... 10, 2014 Deep Knowledge Ventures ... Forum on ‘Commercialising Longevity Research’ and welcomed a ... the London Bioscience Innovation Center for the event, ... Aging Analytics Ltd. The meeting highlighted the need ... research for age-related disease, as well as the ...
(Date:7/10/2014)... CA (PRWEB) July 10, 2014 Unraveling ... closer together. The Archer Family purchased a ... within DNA, but ended up with a lifetime of ... contained within the family members’ DNA genuinely brought the ... decided to search deeper into genetic history and prior ...
(Date:7/10/2014)... Montreal, QC (PRWEB) July 10, 2014 ... comfort and convenience. This rejuvenating device now comes with a ... that develops over time. , The new cup is thinner ... This design works to target rough, thin and uneven surfaces ... original firm cup for a stimulating treatment on areas such ...
(Date:7/10/2014)... 10, 2014 On July 9 ... , presented Russia,s first national ... The Company is developing a unique project called ... develops a number of innovative drugs based on monoclonal ... ceremony took place at the International Exhibition "Innoprom 2014" ...
Breaking Biology Technology:DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 2Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 3Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 4Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 5Introducing a New Bonus Treatment Cup for EvoDerma’s NOOME Anti-Aging Motion 2Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2
... Biotech Inc.,("Oncolytics") (TSX:ONC, NASDAQ:ONCY) announced today that it ... enrolment in its U.S. Phase II trial to,evaluate ... sarcomas that have metastasized to the lung., ... full enrolment of 52,patients, Oncolytics had to demonstrate ...
... the gecko,s uncanny ability to climb sheer walls, researchers at ... is the first to master the easy attach and easy ... useful for a range of products, from climbing equipment to ... material is crafted from millions of tiny, hard, plastic fibers ...
... blueprint of all life, giving instruction and function to ... beings. Now Northwestern University researchers report they have used ... build a three-dimensional structure out of gold, a lifeless ... the researchers built two common but very different crystalline ...
Cached Biology Technology:Oncolytics Biotech Inc. Proceeds to Full Enrolment in U.S. Phase II Sarcoma Clinical Trial 2Oncolytics Biotech Inc. Proceeds to Full Enrolment in U.S. Phase II Sarcoma Clinical Trial 3The pitter patter of little feet ... climbing straight up a wall 2DNA is blueprint, contractor and construction worker for new structures 2DNA is blueprint, contractor and construction worker for new structures 3
Hepatocyte Differentiation Environment...
...
High voltage electrophoresis power supply...
... Major Science Major Science MS 300V (Cat. ... supply designed to meet most electrophoresis needs ... unit. Major Science MS 300V power supply ... to instruments used in electrophoresis. 4 pairs ...
Biology Products: