Navigation Links
Social parasites of the smaller kind
Date:8/24/2007

Cooperation is widespread in the natural world but so too are cheats mutants that do not contribute to the collective good but simply reap the benefits of others cooperative efforts. In evolutionary terms, cheats should indeed prosper, so how cooperation persists despite the threat of cheat takeover is a fundamental question. Recently, biologists at the Universities of Edinburgh and Oxford have found that in bacteria, cheats actually orchestrate their own downfall.

In the study, reported in the September issue of The American Naturalist, the team explored the impact of cheats in populations of the notorious pathogen, Pseudomonas aeruginosa. These bacteria cooperate to scavenge iron from their environment, but mutant cheats do not contribute their fair share of scavenger molecules and instead simply steal the iron supplies of others.

Cheats are kept in check by simple frequency dependence, says Adin Ross-Gillespie, lead author of the study. When rare, cheats prosper at the expense of cooperators, but as they become more common, the profitability of their strategy declines. At equilibrium, neither strategy has the upper hand, so the two coexist.

But, the authors note, this pattern arises only under certain conditions. In this case, it arose because population productivity, too, was sensitive to the frequency of cheats. Cultures with few cheats grew rapidly and achieved larger absolute sizes in the time available, providing greater opportunity for cheats to exploit the situation. Meanwhile, cultures comprising high proportions of cheats grew poorly. Too many cheats spoil the broth, quips Ross-Gillespie.

Microbes cooperate extensively, and their social activities often have profound medical or economic importance. Studies such as this help us to better understand how cooperative traits evolve and persist. Who knows" Perhaps some day we will harness the power of cheats to direct the dynamics of bacterial populations.


'/>"/>

Contact: Suzanne Wu
swu@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
Source:Eurekalert

Page: 1 2

Related biology news :

1. Elephants imitate sounds as a form of social communication
2. Biologists determine genetic blueprint of social amoeba
3. Gorilla susceptibility to Ebola virus: the cost of sociality
4. Shifty-eyed Monkeys Offer Window Into Brains Social Reflexes
5. Rodent social behavior encoded in junk DNA
6. Discovery that bacterium is phosphate gourmet key clue to what makes it most social of bacteria
7. Sudden change in social status triggers genetic response in male fish, study finds
8. Ancient DNA provides clues to the evolution of social behavior
9. Mice lacking social memory molecule take bullying in stride
10. Sociality of sweat bees evolved simultaneously during climate change
11. ASU researchers find link between social behavior, maternal traits in bees
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... Nov. 19, 2014  Earlier this year Donald ... College, and one of the most prolific inventors in ... are transmitted from Smartphones to third party agencies. Spector ... has one of the earliest known patents in this ... in the military, child care, elder care and hospital ...
(Date:11/18/2014)... 2014   News Highlights: ... develop The Partners Data Lake, an agile data ... Lake will allow researcher and clinicians to explore ... the lives of patients , The Partners ... across the Partners system, breaking down physical barriers ...
(Date:11/11/2014)... , Nov. 11, 2014  Forensicon, Inc., a ... firm, is pleased to announce the promotion of ... Director of Digital Forensics. In Schiff,s new role as ... the team of digital forensics examiners and provide leadership ... Photo - http://photos.prnewswire.com/prnh/20141110/157719 ...
Breaking Biology News(10 mins):Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2
... Columbia Engineering and Columbia University Medical Center announced ... bone structure in Chinese-American women to Caucasian women. ... Society,s annual meeting at Long Beach, CA, found ... strength than their Caucasian counterparts, as determined by ...
... kidney is made up of roughly 1 million working units ... the blood, recycle some substances to be reused and eliminate ... called the distal nephron, helps set blood pressure by controlling ... scientists at The University of Texas Health Science Center San ...
... Wild red deer on the Isle of Rum, which were ... the year, a study shows. Scientists believe the annual rutting ... warming spring and summer temperatures. The study shows that the ... on average compared with 30 years ago. The research ...
Cached Biology News:Columbia University uses technological innovation to study bone structure 2Columbia University uses technological innovation to study bone structure 3Warming climate means red deer rutting season arrives early 2
(Date:11/24/2014)... , Nov. 24, 2014  Last week, Representatives ... Butterfield (D-NC) took a bold bipartisan step ... introducing the OPEN Act. Original co-sponsors of the ... The Act will incentivize drug makers and innovators ... diseases and pediatric cancers, which opens the door ...
(Date:11/24/2014)... SOUTH SAN FRANCISCO, Calif. , Nov. 24, 2014 /PRNewswire/ ... announced that Bonnie H. Anderson , president and chief ... the Piper Jaffray 26 th Annual Healthcare Conference on ... New York . The live audio ... website at http://investor.veracyte.com . Please connect to the website ...
(Date:11/24/2014)... 2014 2014 Deep Research Report ... a professional and in-depth research report on the ... like its definition, classification, application, and industry chain ... covers the international market analysis, including China’s domestic ... US, Europe, Asia, China, Japan etc. regions) industry ...
(Date:11/24/2014)... Senior Vice President, General Manager for Clinical ... acumen Elsevier , a world-leading provider ... congratulates Diane Bartoli , Senior Vice President and ... Solutions, for being recognized in the 13 th ... Profiles in Diversity Journal ® . ...
Breaking Biology Technology:OPEN Act Introduced to Repurpose Drugs for Rare Diseases 2Veracyte to Present at the Piper Jaffray 26th Annual Healthcare Conference 2Adipic Dihydrazide Industry 2019 Research Forecasts on Worldwide, China Regions Now Available at ReportsnReports.com 2Adipic Dihydrazide Industry 2019 Research Forecasts on Worldwide, China Regions Now Available at ReportsnReports.com 3Elsevier Clinical Solutions' Diane Bartoli Featured In Profiles in Diversity Journal's 13th Annual Women Worth Watching Issue 2Elsevier Clinical Solutions' Diane Bartoli Featured In Profiles in Diversity Journal's 13th Annual Women Worth Watching Issue 3
... Pharmaceuticals, Inc., a,biotechnology company focused on the development ... Drajeske as Director of Business,Development., Drajeske brings ... the life sciences industry. He formerly served as ... publicly traded biotechnology,company, from 2004 to 2006. While ...
... VELCADE(R) (bortezomib) for Injection sales surpassed $765 ... million in 2007 - - ... myeloma, with launch on track for first half ... MLNM ) today reported 2007 non-GAAP net,income of $86.9 million and GAAP net ...
... Application to be reviewed under European Accelerated ... Pharmion Corporation,(Nasdaq: PHRM ) today ... accepted for review the Company,s Marketing Authorization ... patients with,higher-risk myelodysplastic syndromes (MDS) and announced ...
Cached Biology Technology:Millennium Over-Delivers on 2007 Goals and Financial Guidance 2Millennium Over-Delivers on 2007 Goals and Financial Guidance 3Millennium Over-Delivers on 2007 Goals and Financial Guidance 4Millennium Over-Delivers on 2007 Goals and Financial Guidance 5Millennium Over-Delivers on 2007 Goals and Financial Guidance 6Millennium Over-Delivers on 2007 Goals and Financial Guidance 7Millennium Over-Delivers on 2007 Goals and Financial Guidance 8Millennium Over-Delivers on 2007 Goals and Financial Guidance 9Millennium Over-Delivers on 2007 Goals and Financial Guidance 10Millennium Over-Delivers on 2007 Goals and Financial Guidance 11Millennium Over-Delivers on 2007 Goals and Financial Guidance 12Millennium Over-Delivers on 2007 Goals and Financial Guidance 13Millennium Over-Delivers on 2007 Goals and Financial Guidance 14Millennium Over-Delivers on 2007 Goals and Financial Guidance 15Millennium Over-Delivers on 2007 Goals and Financial Guidance 16Millennium Over-Delivers on 2007 Goals and Financial Guidance 17Millennium Over-Delivers on 2007 Goals and Financial Guidance 18EMEA Accepts for Review Vidaza(R) Marketing Authorization Application for Higher-Risk Myelodysplastic Syndromes 2EMEA Accepts for Review Vidaza(R) Marketing Authorization Application for Higher-Risk Myelodysplastic Syndromes 3EMEA Accepts for Review Vidaza(R) Marketing Authorization Application for Higher-Risk Myelodysplastic Syndromes 4EMEA Accepts for Review Vidaza(R) Marketing Authorization Application for Higher-Risk Myelodysplastic Syndromes 5
...
Mouse polyclonal antibody raised against a partial recombinant PREB. NCBI Entrez Gene ID = 10113...
Mouse monoclonal antibody raised against a partial recombinant CAPG. NCBI Entrez Gene ID = CAPG...
... used to test the crossreactivity of an ... are commonly used as blocking reagents or ... 19 different protein preparations on a nitrocellulose ... species specificity, QC of purified antibodies, selection ...
Biology Products: