HOME >> BIOLOGY >> NEWS
Taking evolution's temperature: Researchers pinpoint the energy it takes to make a species

GAINESVILLE, Fla. - Comfortable living is not why so many different life forms seem to converge at the warmer areas of the planet.

Writing this week in the Proceedings of the National Academy of Sciences, scientists say higher temperatures near the equator speed up the metabolisms of the inhabitants, fueling genetic changes that actually lead to the creation of new species.

The finding - by researchers from the University of Florida, the National Center for Ecological Analysis and Synthesis, Harvard University and the University of New Mexico at Albuquerque - helps explain why more living species seem to exist near the equator, a scientific observation made even before naturalist Charles Darwin set sail to South America on the H.M.S. Beagle nearly two centuries ago.

It may also have a bearing on concepts such as global warming and efforts to preserve diversity of life on Earth.

"We've shown that there is indeed a higher rate of evolutionary change in the form and structure of plankton in the tropics and that it increases exponentially because of temperature," said James Gillooly, Ph.D., an assistant professor of zoology with the UF Genetics Institute. "It tells us something about the fundamental mechanisms that shape biodiversity on the planet."

Speciation - when animals or plants actually evolve into a new species - occurs when life forms with a common ancestor undergo substantial genetic change.

Using a mathematical model based on the body size and temperature-dependence of individual metabolism, the researchers made specific predictions on rates of speciation at the global scale. Then, using fossils and genetic data, they looked at rates of DNA evolution and speciation during a 30-million-year period in foraminifera plankton, a single-celled animal that floats in the ocean.

Researchers compared arrivals of new species of this type of plankton with differences in ocean temperatures at different latitudes ran
'"/>

Contact: John Pastor
jpastor@vpha.health.ufl.edu
352-273-5815
University of Florida
31-May-2006


Page: 1 2 3

Related biology news :

1. Taking a supplement of glycine helps prevent degenerative diseases such as arthrosis or osteoporosis
2. Taking heart failure to the MAT1
3. Taking chips to the next level of gene hunting
4. Vax and Pax: Taking turns to build an eye
5. Taking a bite out of a fellow worker helps wasps recruit new foragers
6. Taking a break from fractures: A closer look at vitamin D
7. Taking a flying jump
8. Taking the piste out of Alpine vegetation
9. Taking the next step toward growing our own fuel
10. Ewwwww! UCLA anthropologist studies evolutions disgusting side
11. Modern humans, not Neandertals, may be evolutions odd man out

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/26/2019)... , ... July 25, 2019 , ... ... announced the first mixed reality headsets to include a new generation eye tracker ... Exhibition in Los Angeles, California (July 30 - August 1). SIGGRAPH attendees ...
(Date:7/21/2019)... ... July 20, 2019 , ... ... ) announced today the release of the biggest software update in its ... platform will provide a significant increase in productivity for its users. ...
(Date:7/17/2019)... ... 2019 , ... RCH Solutions (RCH), a leading ... announces the availability of new specialty advisory practice, a Public Cloud Managed Service, ... bio-pharma companies interested in achieving specific outcomes related to public Cloud adoption. Under ...
Breaking Biology News(10 mins):
(Date:6/12/2019)... N.J. (PRWEB) , ... June 12, 2019 , ... ... custom built, helium-based leak testing instruments for the Pharmaceutical, Biotechnology, Medical Device and ... Shanghai Zillion has been signed. The agreement will grant exclusive rights for Zillion ...
(Date:6/11/2019)... , ... June 10, 2019 , ... ... IOPP will add 80 of its scientific journals to DeepDyve’s rental service for ... to DeepDyve’s continually expanding library of more than 20 million articles, sourced from ...
(Date:6/11/2019)... ... June 11, 2019 , ... A study released ... cells (MSC-EV) are able to incorporate into human CD34+ cells, modifying their gene ... MSC-EVs also increased the cells’ ability to lodge into bone marrow. This research ...
(Date:5/31/2019)... Redwood City, California (PRWEB) , ... ... ... received allowance of our patent applications from the USPTO providing proprietary interest ... SYSTEM AND METHOD FOR SLEEP DISORDER DIAGNOSIS AND TREATMENT… extends Somnology’s IP ...
Breaking Biology Technology:
Cached News: