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:7/31/2014)... shale rock has increased by more than 700 ... fully understand the industry,s effects on nature and ... Frontiers in Ecology and the Environment . ... scientific examination, a team of eight conservation biologists ... concluded that determining the environmental impact of gas-drilling ...
(Date:7/31/2014)... A first-of-its-kind study of bigeye tuna movements in the ... the Large Pelagics Research Center at the University of ... cover a wide geographical range with pronounced north-south movements ... favor a high-use area off Cape Hatteras southwest of ... a new approach to study one of the most ...
(Date:7/31/2014)... --- By tracing nearly 3,000 genes to the ... of Florida scientists have created an extensive "Tree ... large-scale, next-generation DNA sequencing. , Among the ... related to small moths than to large ones, ... evolved. The study also found that some insects ...
Breaking Biology News(10 mins):'Fracking' in the dark: Biological fallout of shale-gas production still largely unknown 2'Fracking' in the dark: Biological fallout of shale-gas production still largely unknown 3Study of bigeye tuna in Northwest Atlantic uses new tracking methods 2Study of bigeye tuna in Northwest Atlantic uses new tracking methods 3UF study advances 'DNA revolution,' tells butterflies' evolutionary history 2UF study advances 'DNA revolution,' tells butterflies' evolutionary history 3
... , New Rochelle, NY, March 17, 2011Simulated interactions in ... may help them develop better social interaction skills, according ... and Social Networking , a peer-reviewed journal published by ... is available free online at http://www.liebertpub.com/cyber ...
... Otilia Carvalho, a researcher from the Tropical Research Institute of ... of rice a staple food crop for half of ... are increasingly shunned by consumers worldwide. She realised she could ... an international collaboration to address a looming threat to world,s ...
... more than three dozen bacteria species including the microbes ... a longstanding debate about why bacteria are more likely to ... their genes from their parents just like people do, bacteria ... more distant relatives. This ability to ,steal, snippets of DNA ...
Cached Biology News:Chemical-free pest management cuts rice waste 2Chemical-free pest management cuts rice waste 3New study pinpoints why some microbial genes are more promiscuous than others 2
(Date:7/31/2014)... York, NY (PRWEB) July 31, 2014 North ... New York City, partnered with GI Energy, one of the ... complete a $13 million upgrade of its 43-year-old CHP system. ... 1971 and in an effort to extend the life of ... six generators and associated electrical and heat recovery equipment, while ...
(Date:7/31/2014)... San Francisco, California (PRWEB) July 31, 2014 ... expert systems that inform therapeutic decision-making in oncology, today ... on August 14, 2014 to discuss the Company's financial ... to provide an update about the business in the ... live audio call beginning on Thursday, August 14, 2014, ...
(Date:7/31/2014)... DIEGO and SHENZHEN, China ... announced today the purchase of an Irys™System ... organization. BGI selected BioNano,s platform to enable comprehensive exploration ... improved assemblies for various organisms of interest, including those ... will partner together to develop new methods for multiplexing ...
(Date:7/31/2014)... global market for molecular diagnostics is expected to reach ... study by Grand View Research, Inc. Growing demand for ... advanced cancer diagnostic technologies are expected to be key ... Moreover, the growing global base of geriatric population and ... lifestyle habits such as smoking and excessive alcohol consumption ...
Breaking Biology Technology:North Shore Towers Partners with GI Energy to Install Turnkey Natural Gas-Fired Combined Heat and Power Plant 2CollabRx, Inc. Schedules First Quarter Fiscal Year 2015 Financial Conference Call and Business Update 2BioNano Genomics Announces the Purchase of the Irys System by BGI 2BioNano Genomics Announces the Purchase of the Irys System by BGI 3BioNano Genomics Announces the Purchase of the Irys System by BGI 4Molecular Diagnostics Market - Global Industry Size, Share, Trends, Analysis, Players, Opportunity, Outlook and Forecast From 2014 to 2020 2Molecular Diagnostics Market - Global Industry Size, Share, Trends, Analysis, Players, Opportunity, Outlook and Forecast From 2014 to 2020 3Molecular Diagnostics Market - Global Industry Size, Share, Trends, Analysis, Players, Opportunity, Outlook and Forecast From 2014 to 2020 4Molecular Diagnostics Market - Global Industry Size, Share, Trends, Analysis, Players, Opportunity, Outlook and Forecast From 2014 to 2020 5
... world in 1998, human embryonic stem cells were considered heralds ... an unlimited supply of cells and tissue of all kinds ... lost in the glitz of the cells' potential to treat ... quality that, when all is said and done, could match ...
... bring high paying jobs to Wisconsin , ,Cory ... creative innovative solutions to help stimulate Wisconsins economy, which ... industries. His challenge as the new Secretary of Commerce, ... of its business portfolio. , ,Wisconsin Technology Network ...
... Without a doubt, the most common question Im asked is, Why ... two answers apply to 90+% of the entrepreneurs asking this question. ... vast majority of entrepreneurs though it isnt the answer they ... and where relevant, it is serious and problematic. , , ...
Cached Biology Technology:Stem Cells Illuminate Early Stages of Human Development 2Stem Cells Illuminate Early Stages of Human Development 3WTN Exclusive Interview: Cory L. Nettles, Secretary of Commerce 2WTN Exclusive Interview: Cory L. Nettles, Secretary of Commerce 3WTN Exclusive Interview: Cory L. Nettles, Secretary of Commerce 4WTN Exclusive Interview: Cory L. Nettles, Secretary of Commerce 5WTN Exclusive Interview: Cory L. Nettles, Secretary of Commerce 6What Angel Networks Want 2What Angel Networks Want 3What Angel Networks Want 4What Angel Networks Want 5
Cell Culture Flask, 75 cm, nontreated polystyrene...
... System is a compact analysis system for the ... fluidics, a controller, advanced digital signal processing and ... analysis system includes the Luminex 100, the XY ... DMF file at the FDA, and partner kits ...
...
... were cultured in Minimum Essential Medium (Eagle) with ... phase of growth. In order to keep ... fixed in acetone-methanol. The cells are arrayed ... with each wells surface specifically treated to enhance ...
Biology Products: