Navigation Links
A new study examines how shared pathogens affect host populations

Many pathogens are able to infect multiple species within a community and are commonly transmitted across species. Cross-species transmission is often associated with pathogen emergence and therefore has been considered as a negative factor for humans, wildlife, and species of agricultural importance. Many pathogens like malaria, Lyme disease or West Nile encephalitis that infect multiple hosts are commonly transmitted by vectors, and their transmission rate is often thought to depend on the proportion of hosts or vectors infected (i.e. frequency dependence). A study, to appear in the July 2005 issue of The American Naturalist, by Volker H. W. Rudolf and Janis Antonovics provides an important conceptual counterexample to the idea that sharing pathogens necessarily affects host populations negatively.

They show that if there is frequency-dependent transmission, a host can be rescued from pathogen-mediated extinction by the presence of a second host with which it shares a pathogen. Sharing a pathogen among one or more alternative species may actually be limiting the spread of the pathogen in any one particular host population. Thus, an epidemic on one species may result because of loss or reduction in the abundance of species in the community, without any numerical or genetic change in the host or pathogen. Studying only the target species or the abiotic environment would not reveal the cause of the epidemic. Their results have not only important consequences for understanding the role of pathogens in species interactions but also provide a potential mechanism linking host biodiversity and ecosystem functioning.

Sponsored by the American Society of Naturalists, The American Naturalist is a leading journal in the fields of ecology and evolutionary biology and animal behavior. For more information, please see our website: www.journals.uchicago.edu/AN

Volker H. W. Rudolf and Janis Antonovics, "Species coexistence and pathogens with frequency-depend
'"/>

Source:University of Chicago Press Journals


Page: 1 2

Related biology news :

1. Bioartificial kidney under study at MCG
2. W.M. Keck Foundation funds study of friendly microbes
3. Yellowstone microbes fueled by hydrogen, according to U. of Colorado study
4. Genome-wide mouse study yields link to human leukemia
5. Clam embryo study shows pollutant mixture adversely affects nerve cell development
6. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
7. Same mutation aided evolution in many fish species, Stanford study finds
8. Sequencing of marine bacterium will help study of cell communication
9. Genetically modified rice in China benefits farmers health, study finds
10. NYU study reveals how brains immune system fights viral encephalitis
11. Loves all in the brain: fMRI study shows strong, lateralized reward, not sex, drive
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: new study examines how shared pathogens affect host populations

(Date:12/3/2014)... 2014   Marvin Test Solutions , a ... for military, aerospace, and manufacturing organizations, today announced ... TS-900 PXI semiconductor test platform . The ... systems to customers at a fraction of the ... ATE. "Our semiconductor customers asked ...
(Date:11/21/2014)... 19, 2014  Earlier this year Donald Spector ... and one of the most prolific inventors in the ... transmitted from Smartphones to third party agencies. Spector envisioned ... one of the earliest known patents in this area. ... the military, child care, elder care and hospital applications. ...
(Date:11/21/2014)... 20, 2014   Atmel® Corporation (NASDAQ: ... and touch technology solutions, today launched the industry,s first ... the widest V cc range from 1.7V to ... faster I 2 C bus communication speeds, and are ... making them ideal for consumer, industrial, computer, and medical ...
Breaking Biology News(10 mins):Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 2Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 3Patented 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 4Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4
... from Iowa State University (USA) published a study which ... metals. Now, a team from the University of the ... results throw this discovery into question. This has reaffirmed ... validity in the press. The resistance and elasticity ...
... Do you cover genetics, genomics, healthcare or medicine? The ... College of Medical Genetics and Genomics Annual Clinical Genetics ... , From Incidental Findings to Whole Genome/Exome Sequencing to ... on the actual practice of genetics and genomics in ...
... the earth 209,000 years ago earlier than scientists commonly ... Sheffield., The pioneering study, conducted by Dr Eran Elhaik from ... University of Houston, also debunked the discovery of the Y ... published in the European Journal of Human Genetics , ...
Cached Biology News:Spider silk ties scientists up in knots 2Complimentary press registration now open for ACMG 2014 Annual Clinical Genetics Meeting 2Putting 'Adam' in his rightful place in evolutionary history 2
(Date:12/19/2014)... 18, 2014 Relmada Therapeutics, Inc. (OTCQB: RLMD), ... of chronic pain, announced the results of its annual ... was a transformational year in Relmada,s history and it ... company," said Sergio Traversa , chief executive officer ... on key financial, human resource and clinical development objectives ...
(Date:12/17/2014)... December 16, 2014 “Never say, ... Philipps- Universität Marburg’s Department of Physics, advises young ... the newly released SPIE Women in Optics ... too shy to ask questions.” , In the ... and mathematics) occupations ranging from university professor and ...
(Date:12/17/2014)... Long Beach, CA (PRWEB) December 17, 2014 ... Technology, Inc. to provide a larger packaged waste water ... district in King Abdullah Economic City (KAEC). Two years ... for EMAAR’s Jeddah Gate Development, serving two residential towers ... plant capacity is over a quarter million gallons per ...
(Date:12/17/2014)... Gene synthesis and bioengineering company ... into a technology access and services agreement with ... proprietary protein engineering technology, known as “ProteinGPS®” to ... extremely excited that the global leader ADM has ... bioengineering technology has now been validated through many ...
Breaking Biology Technology:Relmada Therapeutics Announces Results of Annual Shareholders Meeting 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 3ADM and DNA2.0 Enter Into Protein Engineering Technology Access and Service Agreement 2
... ... President, Marketing and Sales, and James Carr Promoted To ... Capacity in China -, - Details to be Presented at Investor Briefing Today at 12 p.m. Eastern ... Time -, SOUTH SAN FRANCISCO, Calif., ...
... Ill. A hybrid device combining force and fluorescence ... made possible the accurate detection of nanometer-scale motion of ... resonance energy transfer and an optical trap, we now ... of a biomolecule at an extremely low applied force, ...
... Oct. 11 Timely Data Resources, Inc.,has recently released ... and Therapy,Review (DTR) reports. Reports are available through subscription ... be purchased,individually at marketresearch.com. These reports offer a quick ... Each overview is,generally 10 to 15 pages in length, ...
Cached Biology Technology:Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 2Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 3Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 4Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 5Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 6Anesiva Outlines Comprehensive Commercialization Plan for FDA Approved Product Zingo(TM) 7New force-fluorescence device measures motion previously undetectable 2New force-fluorescence device measures motion previously undetectable 3