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:4/13/2017)... UBM,s Advanced Design and Manufacturing event in ... and evolving technology through its 3D Printing and Smart ... the expo portion of the event and feature a ... on trending topics within 3D printing and smart manufacturing. ... will take place June 13-15, 2017 at the Jacob K. ...
(Date:4/11/2017)... , April 11, 2017 NXT-ID, Inc. ... technology company, announces the appointment of independent Directors Mr. ... to its Board of Directors, furthering the company,s corporate governance ... Gino ... we look forward to their guidance and benefiting from their ...
(Date:4/4/2017)... April 4, 2017   EyeLock LLC , a ... the United States Patent and Trademark Office (USPTO) has ... the linking of an iris image with a face ... represents the company,s 45 th issued patent. ... very timely given the multi-modal biometric capabilities that have ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... The CRISPR-Cas9 ... enabling overexpression experiments and avoiding the use of exogenous expression plasmids. The simplicity ... for performing systematic gain-of-function studies. , This complement to loss-of-function studies, such ...
(Date:10/11/2017)... LAGUNA HILLS, Calif. , Oct. 11, 2017  SkylineDx ... London (ICR) and University of Leeds ... to risk-stratify patients with multiple myeloma (MM), in a multi-centric ... The University of Leeds is the ... UK, and ICR will perform the testing services to include ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... conjugate (ADC) therapeutics, today confirmed licensing rights that give it exclusive global ... technology developed in collaboration with Children’s Hospital Los Angeles (CHLA). Additionally, ...
(Date:10/10/2017)... (PRWEB) , ... October 10, 2017 , ... ... innovation and business process optimization firm for the life sciences and healthcare industries, ... conference in San Francisco. , The presentation, “Automating GxP Validation for Agile ...
Breaking Biology Technology:
Cached News: