HOME >> BIOLOGY >> NEWS
Fossils reveal direct link between global warming and genetic diversity in wildlife

For the first time, scientists have found a direct relationship between global warming and the evolution of contemporary wildlife. A research team led by Stanford University biologist Elizabeth A. Hadly published its findings in the Sept. 7 online edition of the journal PloS Biology.

"We think we know a lot about how animals might respond to global warming, but we really have very little idea about their actual genetic response to environmental change," said Hadly, an assistant professor of biological sciences at Stanford.

In the study, she and her colleagues conducted a genetic analysis of two species of rodents commonly found in Wyoming's Yellowstone National Park the montane vole (Microtus montanus) and the northern pocket gopher (Thomomys talpoides). The researchers collected DNA from living animals and from the teeth of fossilized specimens whose remains were buried in Lamar Cave, a remote site near the northeast entrance to the park.

"The deposit in the cave is about nine yards deep and it took me seven years to excavate and identify the fossils," Hadly said. "It contains hundreds of thousands of bones and represents a continuous fossil record dating back 3,000 years. This timescale allows us to really investigate microevolution in a natural environment, the way you'd investigate it in a laboratory with something that has a much quicker generational timeline, such as bacteria or fruit flies."

Climate change and genetics

For the experiment, the research team compared DNA from voles and pocket gophers living near Lamar Cave with ancient DNA from fossilized rodents that inhabited the area at different times since 1000 B.C.

The researchers were particularly interested in animals that were alive during two recent climatic events the Medieval Warm Period (850-1350 A.D.), when the Northern Hemisphere experienced a slight warming trend; and the Little Ice Age (1350-1950), when the hemisphere cooled.

Si
'"/>

Contact: Mark Shwartz
mshwartz@stanford.edu
650-723-9296
Stanford University
7-Sep-2004


Page: 1 2 3 4

Related biology news :

1. Methane and mini-horses: Fossils reveal effects of global warming
2. Discovery Of New Fossils In Gobi Desert Of Mongolia Provides Important Insight Into Early Mammal Evolution
3. Molecular "Fossils" Of Early Life
4. American Museum Of Natural History Researchers Announce Discovery Of Oldest Known Fossil Ants - 92-Million-Year-Old Fossils Found In New Jersey Amber
5. Fossils Show British Columbia Was Once 2,000 Miles South
6. Where Fossils Fear To Tread: Scientists Follow Genes To An Ancient Ancestor
7. DNA lends scientists a hand, revealing new chemical reactions
8. Award winning researchers reveal potential new role for Glivec
9. Hidden diversity: DNA barcoding reveals a common butterfly is actually 10 different species
10. Anthrax enzyme images reveal secrets of antibiotic resistance, suggest new drug design
11. Brown research reveals key insight into memory-making

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


(Date:8/12/2020)... ... 11, 2020 , ... Both Roche, based in Basel, Switzerland, ... agreements with Housey Pharma’s HMI subsidiary to gain access to its core-enabling technology ... and Development spending in excess of US $10 billion. , Scientists at Housey ...
(Date:8/7/2020)... ... August 06, 2020 , ... Alucio™, a fast-growing ... that Eric Chen and Jessica Wong have joined the company’s leadership team as ... , Eric Chen heads development efforts for Alucio’s flagship product, Beacon, an innovative ...
(Date:8/5/2020)... ... ... Regenative Labs has received approval from the Centers for Medicare & Medicaid Services ... jelly allografts to be assigned a Q code and be approved for application directly ... allograft product to be recognized as a 361 HCT/P by CMS regulated under 21CFR ...
Breaking Biology News(10 mins):
(Date:7/10/2020)... ... July 08, 2020 , ... ... a significant expansion of laboratory operations through its COVID-19 testing service, Bode-CARES ... programs. , Bode-CARES provides a turnkey solution that includes a ...
(Date:7/7/2020)... ... July 06, 2020 , ... R3 International is now offering stem cell therapy ... stem cells. Depending on the patient's condition, treatment may be offered IV, intrathecal or ... some form of Alzheimers dementia, and the incidence continues to increase as individuals live ...
(Date:7/1/2020)... ... June 30, 2020 , ... ... that the launch of a new clinical diagnostics immuno-oncology service, TissueInsight ... microenvironment (TME). , “Flagship’s TissueInsight is a service that aids pathologists, oncologists, ...
(Date:6/28/2020)... ... June 26, 2020 , ... ... security solutions providers, today announced its strong opposition to the recently introduced bicameral ... impose a blanket ban on most federal use of nearly all biometric and ...
Breaking Biology Technology:
Cached News: