Navigation Links
Taking evolution's temperature: Researchers pinpoint the energy it takes to make a species

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 ranging from the tropics
'"/>

Source:University of Florida


Page: 1 2 3

Related biology news :

1. HIV Patients May Be at Risk of Heart Problems When Taking Protease Inhibitor Drugs
2. Taking Aim With Nanoparticle PEBBLEs
3. Taking the piste out of Alpine vegetation
4. Taking a flying jump
5. Taking a bite out of a fellow worker helps wasps recruit new foragers
6. Taking the wrinkles out of motoneuronal disease
7. Taking chips to the next level of gene hunting
8. Cancer vaccines -- Taking a jab at cancer by stimulating the immune system
9. On a flys wing, scientists tally evolutions winners and losses
10. Mobile DNA part of evolutions toolbox
11. Researchers discover way to make cells in the eye sensitive to light
Post Your Comments:
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the ... 2015-2019" report to their offering. ... is the adoption of multimodal biometric systems. Multimodal ... an individual for verification and identification purposes. This ...
(Date:12/10/2014)... , Dec. 9, 2014  Wake Forest Baptist Medical ... building for its School of Medicine. Funding for this ... capital campaign that will be publicly launched next summer. ... located in the former 60 series R.J. Reynolds Tobacco ... Quarter. Construction will begin immediately with plans to be ...
(Date:12/5/2014)... , Dec. 4, 2014  Tute Genomics, a ... $2.3 million in Series A1 funding led by UK-based ... also participated in the investment round. "We ... healthcare community adopts next-generation sequencing and seeks new approaches ... Reid Robison , MD MBA, and CEO of ...
Breaking Biology News(10 mins):Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 2Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 3
... that go on to form the face, skull and ... is determined much earlier in development than previously thought, ... according to a recent study published in the journal ... with three different technologies -- immunostaining of proteins, in ...
... the original press release , A motion-triggered camera trap set ... a rhino in the wild on the island of Borneo, World ... rhino is believed to be one of a population of as ... last year in the interior forests of Sabah, Malaysia, an area ...
... inhibits proliferation of a broad range of lethal malignant ... published in the May issue of Cancer Cell, shed ... likely to play a role in cancer progression. This ... inhibitors must display a broad reactivity to effectively attenuate ...
Cached Biology News:Making a face: A new and earlier marker of neural crest development 2WWF captures first-ever photo of wild rhino on Borneo 2Unique dual target specificity of kinase inhibitor key for success against cancer 2
(Date:12/19/2014)... Springs, FL (PRWEB) December 18, 2014 ... of the nation’s leading specialty pharmacies, has an ... serve as clinical pharmacy consultants for prescriber offices ... therapy expertise. , “We have a variety ... therapies. For example, those specializing in hepatitis C ...
(Date:12/19/2014)... Ed Bilsky, Ph.D., vice president for ... Excellence in the Neurosciences (CEN), and professor of pharmacology ... as a member of the prestigious Dana Alliance for ... Maine to receive this honor. , The Dana ... the Dana Foundation. Its mission is to advance ...
(Date:12/19/2014)... In contrast to traditional LED lights where ... Valoya uses proprietary LED technology to incorporate their spectra ... which is critical in low proximity installations. The Valoya ... its lifetime which is up to four times longer ... investment cost was clearly higher when compared to traditional ...
(Date:12/19/2014)... Mass. , Dec. 18, 2014  Decision Resources ... dental biomaterial market will grow moderately through 2023 ... procedures and growing awareness of dental biomaterials all spur ... markets such as China and ... will bring dental procedures within reach for a larger ...
Breaking Biology Technology:BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 2BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 3UNE's Ed Bilsky Named Member of Dana Alliance for Brain Initiatives 2UNE's Ed Bilsky Named Member of Dana Alliance for Brain Initiatives 3Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 2Asia Pacific Dental Biomaterial Market Will Grow Strongly Through 2023 3
... This Thursday, the 17th annual SBIR/STTR Conference will be ... at the Crowne Plaza in Madison, 4402 E. Washington. ... Business Innovation Research (SBIR) and Small Business Technology Transfer ... billion federal dollars available to small businesses for technological ...
... Corporation, a growth company of ... its Cequent Transportation Accessories Group ... provider of zinc plating services. ... Wis. and has been a ...
... worldwide leader in e-document delivery ... and VSI-FAX(R) product families, announces ... This new solution allows Lotus ... efficiently, effectively, and economically with ...
Cached Biology Technology:Annual Conference Honors Tech Grant Winners 2
... whose sequence is derived from bovine rhodopsin protein. The ... C - S(338) - K - T - E - ... P - A(348). This peptide may be used ... reacts with this product and bovine rhodopsin, catalog # PA1-729. ...
... Dual-Binary Analytical System more than doubles the ... LC/MS. The fast analysis cycles of the ... to 100% in tandem mode. Difficult separations ... Using backflush or heartcut configurations, on-line sample ...
... Components in this kit are prepared with ... Biochains Mitochondria Isolation Kit is designed ... a fast and easy way. One kit ... 100 isolations (enriching mitochondria from 10 ...
... Highly-purified, endotoxin-free plasmid DNA preparations are ... in quantities from 1mg to multi-gram ... as large-scale (100mg-multi-gram) preparations are made ... preparation is formulated according to customer ...
Biology Products: