Navigation Links
Life on the wind: Study reveals how microbes travel the Earth
Date:8/17/2011

Scientists from the UK and Switzerland have investigated the remarkable distance that microorganisms may be able to blow between continents, raising questions about their potential to colonise new lands and also potentially to spread diseases.

The researchers from Liverpool John Moores University (LJMU), Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) and the Ecole Polytechnique Fdrale de Lausanne (EPFL) the University of Neuchtel published their results in the Journal of Biogeography this month. They used large computer models of the Earth's atmosphere to study how widely microbes could be dispersed.

LJMU's Dr Dave Wilkinson led the team along with Symeon Koumoutsaris, from the International Space Science Institute in Bern, who modified computer models which were designed for studying the dispersal of dust particles. They looked at what would happen if they released virtual microbes from both the southern tip of South America and also from Mexico. Once airborne, microbes of 0.02mm in diameter and below can easily travel thousands of kilometres.

Dr Dave Wilkinson, LJMU School of Natural Science and Psychology, explained:

"Microbes less than 0.009 mm across went as far as Australia! These sizes would include microbes such as bacteria and many amoebae and also some fungal spores. We found that for smaller microbes, once airborne, dispersal is remarkably successful over a 1-year period. The most striking results are the extensive within-hemisphere distribution of small virtual microbes and the lack of dispersal between the Northern and Southern Hemispheres during the year-long time-scale of our simulations.

What our models show is that only the smallest microbes travel easily between continents. The larger ones (i.e. Larger than 20m but still 500 times smaller than the 1mm threshold previously believed to separate the "cosmopolitan organisms" from those with potential biogeographies) cannot easily travel between continents on the time span of a single year. This is an important result as it very significantly increases the potential for microbial diversity."

Most microbes carried by wind are likely to be harmless, but outbreaks of certain disease such as meningitis in the Sahel region of Africa and foot and mouth disease have been linked to airborne microbes in the past.

"We stress that our model looks at only one aspect of microbial dispersal namely airborne transport to a new site. Once a microbe arrives, it clearly needs to reproduce, including potentially competing with microbes already at that location," Dr Wilkinson concluded. "Given the ease with which the smaller microbes disperse in our model it is possible that this (rather than dispersal itself) may be the rate-limiting step in many cases of microbial range expansion and this topic should form the topic for future research in this area."


'/>"/>

Contact: Clare Doran
C.N.Doran@ljmu.ac.uk
01-512-313-369
Wiley-Blackwell
Source:Eurekalert

Related biology news :

1. Gone with the wind: Far-flung pine pollen still potent miles from the tree
2. Long-term study shows effect of climate change on animal diversity
3. £2 million study to reveal workings of dementia genes
4. New study looks to define evangelicals and how they affect polling
5. CU-Boulder study suggests air quality regulations miss key pollutants
6. Researchers study acoustic communication in deep-sea fish
7. Study reveals homeowner perceptions in fire-prone areas
8. Researchers study how pistachios may improve heart health
9. Study: urban black bears live fast, die young
10. New study indicates link between weight gains during pregnancy and dieting history
11. Study reveals specific gene in adolescent men with delinquent peers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/16/2016)... YORK , May 16, 2016   EyeLock ... solutions, today announced the opening of an IoT Center ... to strengthen and expand the development of embedded iris ... an unprecedented level of convenience and security with unmatched ... authenticate one,s identity aside from DNA. EyeLock,s platform uses ...
(Date:5/3/2016)... 3, 2016  Neurotechnology, a provider of high-precision ... Automated Biometric Identification System (ABIS) , a complete ... MegaMatcher ABIS can process multiple complex biometric transactions ... of fingerprint, face or iris biometrics. It leverages ... and MegaMatcher Accelerator , which have been ...
(Date:4/26/2016)... BANGALORE, India and LONDON ... Infosys Finacle, part of EdgeVerve Systems, a ... ), and Onegini today announced a partnership to ... banking solutions.      (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ... banks to provide their customers enhanced security to ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... Durham, NC (PRWEB) , ... June 23, 2016 , ... ... Odense University Hospital in Denmark detail how a patient who developed lymphedema after being ... (fat) tissue. The results could change the paradigm for dealing with this debilitating, frequent ...
(Date:6/23/2016)... BEACH, Calif. , June 23, 2016  Blueprint ... new biological discoveries to the medical community, has closed ... co-founder Matthew Nunez . "We have ... us with the capital we need to meet our ... will essentially provide us the runway to complete validation ...
(Date:6/23/2016)... 23, 2016 On Wednesday, June 22, ... down 0.22%; the Dow Jones Industrial Average edged 0.27% lower ... 2,085.45, down 0.17%. Stock-Callers.com has initiated coverage on the following ... Therapeutics (NASDAQ: NKTR ), Aralez Pharmaceuticals Inc. (NASDAQ: ... BIND ). Learn more about these stocks by accessing ...
(Date:6/23/2016)... WI (PRWEB) , ... June 23, 2016 , ... ... focused on quality, regulatory and technical consulting, provides a free webinar ... presented on July 13, 2016 at 12pm CT at no charge. , Incomplete ...
Breaking Biology Technology: