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:7/10/2014)... 30, 2014  Aware, Inc. (NASDAQ: AWRE ... previously announced on June 26, 2014 that its Board ... $1.75 per share, or approximately $40 million in total.  ... 2014 and a payment date of July 24, 2014.  ... had set an ex-dividend date for this special cash ...
(Date:7/10/2014)... July 2, 2014  Unisys Corporation,s (NYSE: UIS ... Nederland N.V., today announced that it has been selected by ... manage a new Basic Provision Biometrics solution for penitentiaries across ... won the contract with a solution based on its open ... term of the contract is up to seven years, with ...
(Date:7/10/2014)... , July 2, 2014 NXT-ID, Inc., (OTCQB: NXTD) a biometric ... CEO Mr. Gino Pereira was interviewed on July ... Tampa Florida . Mr. Pereira discusses the ... Cedric Harris and how the Wocket™ aims to replace ... Cedric Harris tells Gino he has ...
Breaking Biology News(10 mins):NASDAQ Sets Ex-Dividend Date for Aware, Inc.'s Special Cash Dividend of $1.75 Per Share 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 4
... deepens customer relationships, WALL, N.J., Aug. 15 ... leader in wireless public safety and,finger-based biometric identification ... quarter ended June 30, 2007. Total revenue ... 30, 2007 decreased 19% to $2.5 million from ...
... Nature Methods Shows Application of Bioinformatics tools to ... ... Aug. 21 Researchers at Selexis SA,and The University ... Elements also known as matrix attachment regions,(or MARs). Data ...
... of interesting new compounds have been discovered inside the bodies ... September 2007) at the Society for General Microbiologys 161st Meeting ... September 2007. Over half of the bodyweight of living ... our baths is made up of the many different ...
Cached Biology News:BIO-key Reports Second Quarter 2007 Results 2BIO-key Reports Second Quarter 2007 Results 3BIO-key Reports Second Quarter 2007 Results 4BIO-key Reports Second Quarter 2007 Results 5Selexis Announces Advanced Approach to Maximize Power of Genetic Elements for Rapid Development of High Performance Cell Lines 2Bacteria from sponges make new pharmaceuticals 2
(Date:7/10/2014)... DALLAS , July 10, 2014  Kainos Capital, ... consumer brands, today announced that it has acquired the ... stake in the business. Terms of the transaction were ... loss and meal replacement business that markets ready-to-drink shakes, ... North America and in the ...
(Date:7/10/2014)... WASHINGTON D.C., April 15, 2014 -- According to ... danger to nuclear security comes from terrorists acquiring ... (HEU) to construct a crude nuclear explosive device. ... illicit nuclear trafficking have involved gram-level quantities, which ... methods. , According to a new study appearing ...
(Date:7/10/2014)... has been extremely challenging because there are many genetic ... cause disease. Now investigators reporting in the July 3rd ... Cell describe a strategy that may help reveal ... factors or environmental exposures to affect the development of ... that may predispose individuals to schizophrenia. , The ...
(Date:7/10/2014)... shelled out for crude 3-D glasses, polarized glasses, ... These basic devices, used to trick the brain ... be rendered obsolete with the introduction of new ... , TAU doctoral students Yuval Yifat, Michal Eitan, ... based on nanoantennas that could be used for ...
Breaking Biology Technology:Kainos Capital Acquires Slim-Fast From Unilever 2Sensitive detection method may help impede illicit nuclear trafficking 2New strategy could uncover genes at the root of psychiatric illnesses 2Projecting a 3-dimensional future 2Projecting a 3-dimensional future 3
... 18 Joseph F. Finn, Jr., C.P.A. ("Finn"), announced ... respiratory indication will be part of the intellectual property offered ... , The PRX-08066 is a Therapeutics Program ... small molecule, oral 5HT2b antagonist for potential treatment of pulmonary ...
... ... been selected by Prometheus as the sample collection kit for MyCeliacID™ a saliva-based genetic ... service as it solves sample collection challenges inherent with traditional collection methods which are ... ...
... CANTON, Mass., Aug. 18 Small and large companies ... stay profitable in this economy. EquipNet is announcing an amazing ... and packaging equipment from a leading pharmaceutical manufacturer. A webcast ... August 27 at 11am. Enthusiastic bargain hunters can make pre-sale ...
Cached Biology Technology:Epix Pharmaceuticals, Inc. Announces the PRX-08066 Therapeutics Program in Phase 2 for Respiratory Indication Will Be Part of The Intellectual Property Offered for Sale at the September 30, 2009 Auction 2DNA Genotek Sample Collection Kit Selected by Prometheus for MyCeliacID™ Genetic Test 2DNA Genotek Sample Collection Kit Selected by Prometheus for MyCeliacID™ Genetic Test 3Pre-Owned Prices on Premium Pharmaceutical Equipment 2
[5,6,8,9,12,14,15(n)-3H]Prostaglandin D2, 925 kBq, 25 uCi. Methanol:water:acetonitrile (3:2:1) solution.> 3.0 TBq/mmol, > 80 Ci/mmol.3.7 MBq/ml, 100 uCi/ml. Category: Radiochemicals &Radiation Safety...
...
One-step, microplate or cuvet, turbidometric, linear detection range 0.096 mg/dL to 11.5 mg/dL. Procedure: 5 min....
One-step, microplate or cuvet, colorimetric, detection range 0.1 mg/dL to 3 mg/dL. Procedure: 10 min....
Biology Products: