Navigation Links
Richer parasite diversity leads to healthier frogs, says University of Colorado study
Date:5/21/2012

the National Science Foundation and a David and Lucile Packard Foundation fellowship awarded to Johnson in 2008.

While the six parasites used in the study are responsible for about 95 percent of trematode infections in the wild, most of the world's parasites cause limited damage to host individuals, said Johnson. In the PNAS study, only two parasites, Ribeiroia and a parasite group called Echinostoma -- which can trigger amphibian mortality -- were known to be particularly dangerous to their host species.

The primary study results support the idea that higher biodiversity can help protect against certain diseases, but few previous studies had considered the diversity of the parasites themselves. Because many parasites compete with each other, ecological systems richer in parasites can act as a buffer against virulent pathogens. Johnson said the combination of extensive field and lab work helped strengthen the study results.

One surprising study finding was that under certain conditions, increases in parasite diversity could increase or decrease host disease. In that aspect of the study, the infection rates were dependent on the order in which the six parasite species were added to the habitats of the frogs, and whether newly added parasite species replaced other parasites or were added alongside them, he said.

If a dangerous parasite is first on the scene, it tends to be replaced when less dangerous species are added, decreasing the odds of host disease. But if a dangerous parasite species is added to an environment already harboring parasites, the study showed either a neutral effect or an increase in disease, Johnson said.

"Collectively, our findings illustrate the importance of considering the hidden role of parasite diversity in affecting disease risk," said Johnson. "While our study was on amphibian diseases, there is ample evidence to suggest similar processes can be occurring in humans and other
'/>"/>

Contact: Pieter Johnson
pieter.johnson@colorado.edu
303-492-5623
University of Colorado at Boulder
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. 1st census shows life in planet ocean is richer, more connected, more altered than expected
2. Lab tests show arthritis drug effective against global parasite
3. Scientists find Achilles heel in life-threatening malaria parasites
4. Weakness can be an advantage in surviving deadly parasites, a new study shows
5. Modified bone drug kills malaria parasite in mice
6. Malaria parasite goes bananas before sex: New study
7. Scientists characterize protein essential to survival of malaria parasite
8. Crucial gene activator in slow-killing parasite identified
9. Global warming changes balance between parasite and host in fish -- new study
10. How parasites modify plants to attract insects
11. Brain parasite directly alters brain chemistry
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Richer parasite diversity leads to healthier frogs, says University of Colorado study
(Date:9/16/2014)... make ethical choices such as buying clothing not made ... coffee, and bringing their own bags when they go ... Journal of Consumer Research , ethical consumption is motivated ... about unethical practices into action. , "Advocates of ethical ... human costs of the products they choose, but unfortunately ...
(Date:9/16/2014)... N.C. , Sept. 16, 2014  Valencell, Inc., ... been chosen as one of 18 "Showcase Companies" representing ... businesses at the annual CED Tech Venture Conference on ... Convention Center in Raleigh, North ... will lead a discussion during the "Digital Health ...
(Date:9/16/2014)... a season of bounty. Fungi of dizzying variety erupt ... in search of elusive but delectable wild mushrooms. Part ... treasure hunt, and their mysterious not-quite-meat, not-quite-vegetable qualities that ... which you are eating known to science? , The ... although some estimates range up to 10 million species, ...
Breaking Biology News(10 mins):Why are consumers willing to spend more money on ethical products? 2Valencell, Inc. Selected as 'Showcase Company' at CED Tech Venture Conference 2014 2What's for dinner? Rapidly identifying undescribed species in a commercial fungi packet 2What's for dinner? Rapidly identifying undescribed species in a commercial fungi packet 3
... disease are increasingly becoming resistant to synthetic insecticides. Now ... Complementary and Alternative Medicine suggests that the berries of ... have potential for keeping mosquitoes at bay. S. ... for its medicinal properties and commonly used as ...
... Southern Research Station (SRS), Iowa State University, and the ... of a fungus responsible for the wilt of redbay ... Florida. In the February issue of Plant Disease, ... results from their assessment of the fungus, the beetle ...
... but the microscopic animals called bdelloid rotifers seem to get ... have done so over millions of years of evolution, resulting ... the usual drawback of asexuality extinction and the ... finding out how. In two related papers published ...
Cached Biology News:Ayurvedic nightshade deadly for dengue mosquito 2Laurel wilt of redbay and sassafras: Will avocados be next? 2Is DNA repair a substitute for sex? 2Is DNA repair a substitute for sex? 3
(Date:9/16/2014)... Sept. 16, 2014 In preparation for VARTECH ... -based cybersecurity company focused on authentication and SSO announced ... the ability to generate a OTP through the presentation ... pioneer of user-based RFID authentication, 2FA,s solutions have leveraged ... for many years. RFID authentication is broadly deployed in ...
(Date:9/16/2014)... Australia (PRWEB) September 16, 2014 RENU 28, ... Signaling molecules, became available for purchase in Australia and ... a nationwide tour beginning September 16th. The tour will make ... the 17th, Bundaberg on the 18th, Sydney on the 20th, ... market in Australia and New Zealand and to educate people ...
(Date:9/15/2014)... States (PRWEB) September 16, 2014 ... Cancer Vaccines, and Adoptive T-cell Therapies is a ... report focuses on the three principal types of ... research and development in cancer immunotherapy (which is ... Therapeutic anticancer vaccines and Adoptive cellular immunotherapy. ...
(Date:9/15/2014)... University have developed a technique for controlling the surface ... opening the door to a new generation of reconfigurable ... on the fact that the oxide "skin" of the ... acts as a surfactant, lowering the surface tension between ... used a liquid metal alloy of gallium and indium. ...
Breaking Biology Technology:2FA, Inc. Announces RFID-based One-Time Password (OTP) Authentication 2Global Wellness Company Hosts ASEA Australia Tour September 16-22 2Cancer Immunotherapy Market: Immune Checkpoint Inhibitors, Cancer Vaccines, and Adoptive T-cell Therapies 2Cancer Immunotherapy Market: Immune Checkpoint Inhibitors, Cancer Vaccines, and Adoptive T-cell Therapies 3Cancer Immunotherapy Market: Immune Checkpoint Inhibitors, Cancer Vaccines, and Adoptive T-cell Therapies 4Cancer Immunotherapy Market: Immune Checkpoint Inhibitors, Cancer Vaccines, and Adoptive T-cell Therapies 5Researchers control surface tension to manipulate liquid metals 2
... SOUTH SAN FRANCISCO, Calif., June 11 iZumi ... industrialization of induced pluripotent stem cell (iPS) technology ... cellular reprogramming and directed differentiation of patient cells, ... Ph.D., to the company,s board of directors and ...
... Calif., June 11 STAAR Surgical Company (Nasdaq: ... of minimally invasive ophthalmic products, today announced that the ... System for use with the Affinity(TM) Collamer(R) Three-Piece NTIOL ... Epiphany will usher in a new era of insertion ...
... WALTHAM, Mass., June 11 Repligen Corporation (Nasdaq: ... fiscal year 2009, ended March 31, 2009. Total revenue ... of $19,296,000 for fiscal year 2008 ended March 31, 2008, ... the year was comprised of Protein A product revenue, and ...
Cached Biology Technology:iZumi Bio Appoints Dr. Corey Goodman to Board of Directors and Scientific Advisory Board 2iZumi Bio Appoints Dr. Corey Goodman to Board of Directors and Scientific Advisory Board 3STAAR Surgical Receives FDA Clearance for the Epiphany(TM) Injector System 2STAAR Surgical Receives FDA Clearance for the Epiphany(TM) Injector System 3Repligen Reports Fourth Quarter and Fiscal Year 2009 Financial Results 2Repligen Reports Fourth Quarter and Fiscal Year 2009 Financial Results 3Repligen Reports Fourth Quarter and Fiscal Year 2009 Financial Results 4Repligen Reports Fourth Quarter and Fiscal Year 2009 Financial Results 5Repligen Reports Fourth Quarter and Fiscal Year 2009 Financial Results 6Repligen Reports Fourth Quarter and Fiscal Year 2009 Financial Results 7
... for use as a wash buffer for Michels ... is useful for transportation of specimens (such as ... Samples may remain in Transport Fluid for ... Michels Transport Fluid is not a fixative and ...
... use with 96- or 384-well PCR plates Dimples ... location on 96-tube plates End tabs on Thermo-Mat™ ... plate* Efficient sealing is achieved with either Thermo-Mat™ ... or clip-down hot lid thermal cyclers Fully autoclavable ...
... TUNEL-based assay kit provides complete components including ... detection of DNA fragmentation in cultured cells ... in the procedure provides greater sensitivity than ... analyzed by flow cytometry. The kit works ...
... Buffer is a unique alternative to ... (TRIS acetate-EDTA) electrophoresis buffers. Bionic Buffer ... rapid running times, and high-resolution band ... gel electrophoresis after dilution to working ...
Biology Products: