Navigation Links
Catastrophic amphibian declines have multiple causes, no simple solution
Date:4/25/2011

CORVALLIS, Ore. Amphibian declines around the world have forced many species to the brink of extinction, are much more complex than realized and have multiple causes that are still not fully understood, researchers conclude in a new report.

The search for a single causative factor is often missing the larger picture, they said, and approaches to address the crisis may fail if they don't consider the totality of causes or could even make things worse.

No one issue can explain all of the population declines that are occurring at an unprecedented rate, and much faster in amphibians than most other animals, the scientists conclude in a study just published in the Annals of the New York Academy of Sciences.

The amphibian declines are linked to natural forces such as competition, predation, reproduction and disease, as well as human-induced stresses such as habitat destruction, environmental contamination, invasive species and climate change, researchers said.

"An enormous rate of change has occurred in the last 100 years, and amphibians are not evolving fast enough to keep up with it," said Andrew Blaustein, a professor of zoology at Oregon State University and an international leader in the study of amphibian declines.

"We're now realizing that it's not just one thing, it's a whole range of things," Blaustein said.

"With a permeable skin and exposure to both aquatic and terrestrial problems, amphibians face a double whammy," he said. "Because of this, mammals, fish and birds have not experienced population impacts as severely as amphibians at least, not yet."

The totality of these changes leads these researchers to believe that the Earth is now in a major extinction episode similar to five other mass extinction events in the planet's history. And amphibians are leading the field one estimate indicates they are disappearing at more than 200 times that of the average extinction rate.

'/>"/>
Contact: Andrew Blaustein
blaustea@science.oregonstate.edu
541-737-9869
Oregon State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Molecular medicine could avert predicted catastrophic vision loss in the aged
2. Study rules out inbreeding as cause of amphibian deformities
3. Study confirms amphibians ability to predict changes in biodiversity
4. Global warming link to amphibian declines in doubt
5. 10 new amphibian species discovered in Colombia
6. Spring fishing season arrives... and with it, amphibian diseases
7. The first gene-encoded amphibian toxin isolated
8. Amphibians as environmental omen disputed
9. Killer fungus threatening amphibians
10. Counting frogs: Why monitoring our amphibian populations is important
11. Shipping industry sends help as project in Panama tackles amphibian crisis
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... , Respiratory syncytial virus (RSV) is a ... life-threating illness in very young and elderly populations. ... enters host cells through the fusion protein RSV ... interfering peptides that prevent bundle formation limit RSV ... susceptible to degradation. In this issue of the ...
(Date:4/17/2014)... NY, April 17, 2014The development of stem cell therapies ... ability to characterize stem cell populations based on cell ... discovered a new marker that is highly expressed in ... cord blood, which they describe in an article in ... Mary Ann Liebert, Inc., publishers. The article is available ...
(Date:4/17/2014)... study suggests that fish consumption advisories for expecting ... long-lived contaminants like persistent organic pollutants (POPs). ... researchers including University of Toronto Scarborough PhD student ... how different levels of environmental contamination, a mother,s ... in the body influenced exposure in her children. ...
Breaking Biology News(10 mins):JCI online ahead of print table of contents for April 17, 2014 2JCI online ahead of print table of contents for April 17, 2014 3JCI online ahead of print table of contents for April 17, 2014 4JCI online ahead of print table of contents for April 17, 2014 5JCI online ahead of print table of contents for April 17, 2014 6Fish consumption advisories fail to cover all types of contaminants 2
... an estimated 665,000 deaths, mostly among African children. Now, ... for the world,s most useful antimalarial drug, artemisinin, giving ... cost of the live-saving drug in the future. , ... been slow due to high production costs of artemisinin. ...
... a hormone released by the lining of the stomach that ... obesity -- in fact, a vaccine that lowers ghrelin levels ... treatment for obesity. However, many people eat as a ... its effectiveness as a treatment for obesity may be reduced. ...
... pose considerable health threats to humans, and the heavy metal ... are exposed to it through plant-derived foods such as grains ... can reduce the amount of Cd found in the food ... in the Cell Press journal Trends in Plant Science ...
Cached Biology News:IU chemist develops new synthesis of most useful, yet expensive, antimalarial drug 2Low ghrelin -- reducing appetite at the cost of increased stress? 2Studies shed light on how to reduce the amount of toxins in plant-derived foods 2
(Date:1/14/2014)... January 14, 2014 EquitiesIQ, a leading ... (OTCQB: ALQA). Alliqua is an emerging biomedical company acquiring, ... wound care market. , Free report download: http://equitiesiq.com/reports/alliqua/ ... a seasoned management team and Board, which launched the ...
(Date:1/14/2014)... 14, 2014 In recent years, growing ... methods in product development and promotion has led to ... mistrust, fueled by concerns about the insidious impact of ... of spectacular fines to the world’s biggest pharmas for ...
(Date:1/14/2014)... and Cardiff, UK (PRWEB) January 13, 2014 ... development leader with more than 20 years in the ... optics and photonics . Hainsey will serve as the ... to have Dr. Hainsey join SPIE as our Technology ...
(Date:1/14/2014)... Research Triangle Park, NC (PRWEB) January 14, 2014 ... diagnostic company focusing on ultra-sensitive POC diagnostic platforms and novel ... on their first round of financing netting a total of ... first outside equity capital in the company. This group of ...
Breaking Biology Technology:EquitiesIQ Initiates Coverage of Alliqua, Inc. 2EquitiesIQ Initiates Coverage of Alliqua, Inc. 3The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2BioMedomics, Inc. Closes $690K Round of Financing 2
... a leading laboratory services company, recently announced its formation ... as GI Pathology, D-PATH Dermatopathology and OncoMetrix. ... CEO of Poplar Healthcare, "we felt it was imperative ... individual companies could belong, while still maintaining their unique ...
... Stem Cell Assurance, Inc. (SCLZ.PK) (the "Company") ... "BioRestorative Therapies, Inc."  The Company,s new web site address ... been advised by the Financial Industry Regulatory Authority (FINRA) ... will change from "SCLZ" to "BRTX" thirty days following ...
... Aug. 17, 2011 Planet Biopharmaceuticals, Inc. and its ... pharmaceutical company focused on providing products for allergy and ... Ph.D. has been named as the company,s Executive Chairman ... Officer on August 29, 2011. Odlaug will replace William ...
Cached Biology Technology:Poplar Healthcare Forms Parent Company, Launches New Web Site 2Stem Cell Assurance, Inc. Announces Change of Name to BioRestorative Therapies, Inc. 2Planet Biopharmaceuticals, Inc. Appoints Theron (Ted) Odlaug, Ph.D. as Executive Chairman 2
... for arraying proteins of interest with ... equipment. DiscoverLight Protein Array Kits allow ... cell lysate or antibody in a ... specially designed nitrocellulose membranes with a ...
... for Alkaline Phosphatase conjugates. The product ... both the enzyme and the antibody following ... product has been chemically engineered to increase ... shelf life, resistance to various shipping conditions ...
Request Info...
NovaScreen offers cell biology, cell culture and molecular biology services for companies who lack a cell culture facility....
Biology Products: