Navigation Links
New study supports Darwin's hypothesis on competition between species
Date:6/13/2011

A new study provides support for Darwin's hypothesis that the struggle for existence is stronger between more closely related species than those distantly related. While ecologists generally accept the premise, this new study contains the strongest direct experimental evidence yet to support its validity.

"We found that species extinction occurred more frequently and more rapidly between species of microorganisms that were more closely related, providing strong support for Darwin's theory, which we call the phylogenetic limiting similarity hypothesis," said Lin Jiang, an assistant professor in the School of Biology at Georgia Tech.

The study was published online on June 14, 2011 in the journal Ecology Letters. The work was supported by the National Science Foundation.

Jiang and his team -- Cyrille Violle, formerly a postdoctoral fellow at Georgia Tech currently at the Centre d'Ecologie Fonctionnelle et Evolutive in Montpellier, France, and Georgia Tech biology graduate student Zhichao Pu -- conducted experiments with 10 common ciliated protist species in artificial, simplified ecosystems called microcosms. Diana Nemergut, an assistant professor in the Institute of Arctic and Alpine Research and the Environmental Studies Program at the University of Colorado at Boulder, helped the team generate a family tree of the 10 microorganisms to determine how closely related the species were.

"We selected bacterivorous ciliated protist microorganisms for this study because they rapidly reproduce, allowing us to examine species co-existence over multiple generations in a closed system during a period of a few weeks, which wouldn't be possible if we were testing the hypothesis with plants or animals," said Jiang.

The researchers set up 165 microcosms that contained either an individual protist species or a pairing of two species, along with three types of bacteria for the organisms to eat. They collected weekly sam
'/>"/>

Contact: Abby Robinson
abby@innovate.gatech.edu
404-385-3364
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Social scientists study impact of human adult stem cell research
2. Scripps Research scientist wins $1.9 million grant to study malaria
3. Mountain pine beetle activity may impact snow accumulation and melt, says CU-Boulder study
4. Study finds widespread stream biodiversity declines at low levels of urban development
5. Environmental engineering students and faculty study Passaic River pollution
6. Finnish twin study yields new information on how fat cells cope with obesity
7. Smithsonian study: Stranding records are faithful reflection of live whale and dolphin populations
8. Pregnant women can prevent excess weight gain with simple steps, study finds
9. University of Arizona awarded $2.95 million to study monsoon ecology
10. Wayne State to study the role of vitamin D in African-Americans with high blood pressure
11. Study reveals how high-fat diet during pregnancy increases risk of stillbirth
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New study supports Darwin's hypothesis on competition between species
(Date:8/21/2014)... , Aug. 21, 2014 /PRNewswire-iReach/ -- LiveScan ... has agreed to a partnership with Gabriel Health ... fastest growing Certified Nursing Assistant preparatory ... Institute  an exclusive member of Binary,s LiveScan service ... Biometrics will improve its service capabilities by ...
(Date:8/21/2014)... study aimed at improving the food intake, health and ... homes is among three projects at the University of ... the Canadian Institutes of Health Research (CIHR). , ... Sciences at Waterloo, and a Schlegel research chair in ... to investigate why many Canadians living in long-term care ...
(Date:8/21/2014)... Nine researchers from Beth Israel Deaconess Medical Center (BIDMC ... World,s Most Influential Scientific Minds 2014," a comprehensive ... a web resource for science metrics and research performance ... the most influential "are performing and publishing work that ... their science," according to a Thomson Reuters statement. Researchers ...
Breaking Biology News(10 mins):LiveScan Provider Binary Biometrics Announces Partnership with Preeminent CNA School, Gabriel Health Institute to Expand Services in Orlando Region 2LiveScan Provider Binary Biometrics Announces Partnership with Preeminent CNA School, Gabriel Health Institute to Expand Services in Orlando Region 3Grants will fund landmark aging research at Waterloo 2BIDMC researchers named among 'the most influential scientific minds' 2BIDMC researchers named among 'the most influential scientific minds' 3
... fluctuations in the populations they target, but its not ... journal Nature by scientists at Scripps Institution of Oceanography ... general underlying mechanism. Research led at Scripps with ... two chief scientific advisors to the United Kingdom) demonstrates ...
... worm, University of Maryland researchers have discovered an important ... absorbed and transported into the body. The finding could ... the worlds number one nutritional disorder., With C. elegans, ... Hamza, assistant professor of animal and avian sciences, and ...
... -- Some primates have evolved big brains because their ... advantage that outweighs the demands of extra years of ... Duke University and the University of Zurich have concluded ... key benchmarks in the development of 28 different primate ...
Cached Biology News:Fishing throws targeted species off balance, Scripps study shows 2Fishing throws targeted species off balance, Scripps study shows 3Bloodless worm sheds light on human blood, iron deficiency 2Bloodless worm sheds light on human blood, iron deficiency 3Slowly-developing primates definitely not dim-witted 2Slowly-developing primates definitely not dim-witted 3
(Date:8/21/2014)... Aug. 21, 2014 Mathematic studies at the ... , and funded by the Jeffrey Epstein VI Foundation ... can be visually identified for elimination. These aggressive cells are ... which shows a topological map of what to look for ... research, for while tumor cells can be extracted from biopsy, ...
(Date:8/21/2014)... Pursuit Solutions ( http://www.pursuit-solutions.com ), ... services for Life Sciences sales and marketing organizations, ... New Commercial Sales Models” by Peter Robinson, co-founder ... article examines some innovative models used to improve ... in the pharmaceutical market. Robinson grades the industry ...
(Date:8/21/2014)... On Wednesday of last week RENU 28, the world's ... became available for purchase in Australia and New Zealand, and ... 28 works is, if you think about the definition of ... cellular renewal within your body. If you think about the ... cellular renewal. What RENU 28 does is it works with ...
(Date:8/20/2014)... succeeded in measuring vibrational motion of a single molecule ... vibration of a single molecule differs from the behaviour ... performed at the University of California, Irvine, where post-doctoral ... as a visiting fellow under professor Vartkess A. Apkarian, ... was lead by Professor Eric O. Potma. The results ...
Breaking Biology Technology:Science Power Jeffrey Epstein and Harvard University Fund Project to Visually Stop Tumor Growth 2Pursuit's Peter Robinson Publishes "Grading Pharma's Use of New Commercial Sales Models" 2RENU 28 Skin Care Now Available in Australia and New Zealand 2Seeing a molecule breathe 2
... about the University of Wisconsin-Madison , justified or ... close to the tree. It has world-class scientists and ... or services, but most of that commercialization takes place ... point, that's true. Just check the figures for per ...
... Wis. - Ruling that two Google products ... a federal judge has granted a motion to dismiss a ... District Judge John Shabaz has ruled that Google's AdSense ... held by the Madison-based HyperPhrase Technologies, LLC and its subsidiary, ...
... leaving a job is becoming more and more a rare ... year ago, I'm still getting feedback about people giving two-weeks' ... believe that two-week notices no longer are part of the ... notice is for! , ,One reader said you should give ...
Cached Biology Technology:Entrepreneurship grant will build strong foundation 2Entrepreneurship grant will build strong foundation 3Entrepreneurship grant will build strong foundation 4Wisconsin judge dismisses patent suit vs. Google 2Two-week notices: People are still concerned 2Two-week notices: People are still concerned 3Two-week notices: People are still concerned 4Two-week notices: People are still concerned 5
... Blot Strong Antibody Stripping Solution is effective ... that have been developed with chemiluminescence or ... not recommended for stripping colorimetric substrates (TMB, ... possible to effectively remove substrates that precipitate ...
... supplied as a 5x solution. Designed ... membrane-bound proteins without destroying antigenic binding ... radioisotopic signals from blots. Not recommended ... as a 5X solution sufficient to ...
... This marker is specifically designed ... (urea) IEF. The four proteins in ... provide a diagonal pattern across a ... 7.6 to 3.8. ...
High-throughput DNA preparation and end sequencing of BAC libraries. 3730xl DNA sequencers. LIMS tracking utilizing Geospiza's Finch system. Full-length BAC sequencing also available. Our expertise h...
Biology Products: