Navigation Links
New insights into how deadly amphibian disease spreads and kills
Date:5/10/2010

Scientists have unraveled the dynamics of a deadly disease that is wiping out amphibian populations across the globe. New findings, published today in the Proceedings of the National Academy of Sciences, suggest that infection intensity -- the severity of the disease among individuals -- determines whether frog populations will survive or succumb to an amphibian fungal disease called Chytridiomycosis. The research identifies a dangerous tipping point in infection intensity, beyond which Chytrid causes mass mortalities and extinctions, and finds that continual re-infection causes the disease to reach this threshold.

Dangerous Threshold

"We found that mass frog die-offs only occur when the severity of the Chytrid infection reaches a critical threshold among the individual frogs," said Vance Vredenburg, assistant professor of biology at San Francisco State University. "Now that we know this limit, which is a specific number of fungal spores per frog, conservation efforts may be able to save susceptible frog species by preventing the disease from reaching this point."

In the first of two separate studies, Vredenburg and colleagues tracked the invasion and spread of Chytrid among frogs in California's Sierra Nevada Mountains during a 13-year period, focusing on two species of the mountain yellow-legged frog (Rana muscosa and Rana sierrae). The study found that Chytrid is particularly destructive when it invades a previously unexposed population, similar to the smallpox epidemics that devastated human populations in the 17th and 18th centuries.

"When Chytrid hits nave host populations, it grows so quickly that the usual checks and balances, which prevent a pathogen from causing extinction, don't have a chance to kick in," Vredenburg said. "We are living in a time when the global movement of people and goods is likely spreading this disease to areas where it wasn't present before, interrupting
'/>"/>

Contact: Elaine Bible
ebible@sfsu.edu
415-405-3606
San Francisco State University
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Paper offers new insights into the genomics of speciation
2. Neanderthal genome yields insights into human evolution and evidence of interbreeding
3. New Stanford-led program aims to produce insights into brain injury, recovery
4. Study provides new insights into the implications of autism onset patterns
5. New insights into treatment options for patients suffering from severe alcoholic hepatitis
6. Mouse work: New insights on a fundamental DNA repair mechanism
7. New insights into helping marine species cope with climate change
8. Giant panda genome reveals new insights into the bears bamboo diet
9. Catching calcium waves could provide Alzheimers insights
10. Bacteria provide new insights into human decision making
11. New research provides insights into potential ecological costs and cobenefits of REDD
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New insights into how deadly amphibian disease spreads and kills
(Date:7/27/2015)... Calif. , July 27, 2015  Synaptics ... of human interface solutions, today announced that Huawei ... touchscreen solution for its stylish smartwatch. Huawei ... its proven reliability, low power and highly responsive ... wet finger. Huawei designers also required a classic ...
(Date:7/27/2015)... , July 27, 2015   Zynx ... and experience-based clinical improvement solutions, today announced that ... is now available on Android smartphones and tablets. ... and post-care organizations can use ZynxCarebook to securely ... patient,s condition, streamline care transitions to other care ...
(Date:7/23/2015)... July 23, 2015 Aware, Inc. (NASDAQ: AWRE ... reported financial results for its second quarter ended June 30, ... 2015 was $4.5 million, a decrease of 33% compared to ... in the second quarter of 2015 was $0.3 million, or ... $0.04 per diluted share, in the same period a year ...
Breaking Biology News(10 mins):Synaptics Touchscreen Solution Powers New Huawei Watch 2Synaptics Touchscreen Solution Powers New Huawei Watch 3Zynx Health Adds Android Device Support to ZynxCarebook Solution 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 3Aware, Inc. Reports Second Quarter 2015 Financial Results 2Aware, Inc. Reports Second Quarter 2015 Financial Results 3Aware, Inc. Reports Second Quarter 2015 Financial Results 4Aware, Inc. Reports Second Quarter 2015 Financial Results 5Aware, Inc. Reports Second Quarter 2015 Financial Results 6
... Most scientists believe that staph infections are caused by many ... signaling process is called quorum sensing because many bacteria must ... Brinker research group has determined that the very first stage ... a virulent form, occurs in a single cell and that ...
... measured CO2 levels for the past three years in ... area near Valladolid. The results, which are the first ... the levels rose "significantly" between 2002 and 2005. ... to find out about carbon dioxide (CO2) levels, and ...
... more difficult time quitting smoking than those who are ... affect on Latinas odds of quitting smoking. Details of ... & Prevention , a journal of the American Association ... focus on tobacco. "Acculturation affects smoking cessation differently ...
Cached Biology News:Stopping MRSA before it becomes dangerous is possible, Sandia/UNM researchers find 2Stopping MRSA before it becomes dangerous is possible, Sandia/UNM researchers find 3CO2 levels rising in troposphere over rural areas 2Acculturation affects smoking cessation success among Latinos 2
(Date:7/29/2015)... ... July 29, 2015 , ... ... introduces CHRONO NIGHT Express Contouring Bi-Gel, a nighttime-specific product that targets fat cells ... sugars that are able to enter fat cells, inhibiting the formation of new ...
(Date:7/29/2015)... ... 29, 2015 , ... Costello served as Lead Levee Design Engineering Manager for ... County, Texas area from future storm surge flooding, such as occurred in Hurricane Ike ... alignment alternatives for providing protection, Costello also balanced socio-economic and environmental needs ...
(Date:7/29/2015)... , ... July 29, 2015 , ... ... (BI) advanced cell culture products, announces the availability of BI’s line of human ... Biological Industries, these stem cell differentiation media offer a complete system for multipotency ...
(Date:7/29/2015)... , ... July 29, 2015 , ... ... the company is making good progress in evaluating the full range of capabilities ... stem cells. Adult tissue stem cells perform the day-to-day renewal and repair of ...
Breaking Biology Technology:Phytocéane introduces CHRONO NIGHT Express Contouring Bi-Gel 2Phytocéane introduces CHRONO NIGHT Express Contouring Bi-Gel 3Preventing Storm Surge Flooding in Houston 2Rainbow Scientific, Inc. Announces Availability of Human Mesenchymal Stem Cell Differentiation Media 2Rainbow Scientific, Inc. Announces Availability of Human Mesenchymal Stem Cell Differentiation Media 3Asymmetrex Plans to Report Results From Adult Stem Cell Technology Development Milestone Studies At End of Summer 2Asymmetrex Plans to Report Results From Adult Stem Cell Technology Development Milestone Studies At End of Summer 3Asymmetrex Plans to Report Results From Adult Stem Cell Technology Development Milestone Studies At End of Summer 4
... China, Feb. 13 /PRNewswire-Asia-FirstCall/ -- China,Biologic Products, Inc. ... one of the leading plasma-based pharmaceutical companies in ... one of its R&D,projects, "High-Purity Human Albumin," will ... , The National Torch ...
... MISSISSAUGA, ON, Feb. 13 /PRNewswire-FirstCall/ - YM BioSciences ... company that identifies, develops and commercializes differentiated products ... results for the second quarter of fiscal 2009, ... we prepared to initiate our two randomized Phase ...
... Acceleration, Channel Effectiveness and Demand Creation Best Practice Findings to ... ... Wilton, CT (PRWEB) February 13, 2009 -- SiriusDecisions, ... practice research and data, today announced that top executives from ...
Cached Biology Technology:China Biologic Products' High-Purity Human Albumin Research and Development Project to be Listed in the National Torch Plan 2China Biologic Products' High-Purity Human Albumin Research and Development Project to be Listed in the National Torch Plan 3YM BIOSCIENCES REPORTS SECOND QUARTER 2009 OPERATIONAL AND FINANCIAL RESULTS 2YM BIOSCIENCES REPORTS SECOND QUARTER 2009 OPERATIONAL AND FINANCIAL RESULTS 3YM BIOSCIENCES REPORTS SECOND QUARTER 2009 OPERATIONAL AND FINANCIAL RESULTS 4YM BIOSCIENCES REPORTS SECOND QUARTER 2009 OPERATIONAL AND FINANCIAL RESULTS 5YM BIOSCIENCES REPORTS SECOND QUARTER 2009 OPERATIONAL AND FINANCIAL RESULTS 6YM BIOSCIENCES REPORTS SECOND QUARTER 2009 OPERATIONAL AND FINANCIAL RESULTS 7YM BIOSCIENCES REPORTS SECOND QUARTER 2009 OPERATIONAL AND FINANCIAL RESULTS 8YM BIOSCIENCES REPORTS SECOND QUARTER 2009 OPERATIONAL AND FINANCIAL RESULTS 9YM BIOSCIENCES REPORTS SECOND QUARTER 2009 OPERATIONAL AND FINANCIAL RESULTS 10Senior Executives from HP, IBM and Omniture Headline "Leaders and Lessons Learned" Sales and Marketing Summit 2009 2Senior Executives from HP, IBM and Omniture Headline "Leaders and Lessons Learned" Sales and Marketing Summit 2009 3
Mouse Anti-Human Killer cell immunoglobulin-like receptor, two domains, long cytoplasmic tail, 4 (KIR2DL4 Monoclonal Antibody Family: New...
Mouse monoclonal [7B9] to beta II Tubulin ( Abpromise for all tested applications). Antigen: Synthetic peptide, CEEEEGEDEA found at the c-terminus of beta II tubulin. Entrez GeneID: 10383 ...
Gridded Cell Culture Petri Dish (20 mm molded in base), tissue-culture treated...
...
Biology Products: