HOME >> BIOLOGY >> NEWS
Concerns remain about UVB damage to amphibians

CORVALLIS, Ore. The exposure of amphibians to damaging levels of ultraviolet-B radiation in sunlight is likely a significant part of global amphibian declines, researchers say, despite some recent suggestions to the contrary and a scientific controversy about what role UV-B actually plays in this crisis.

Scientists from the United States, Canada and Spain have outlined their understanding of UV-B's biological effects on amphibians in an article in Ecology, a professional journal.

In it, they respond to some recent studies that have called into question whether UV-B radiation is causing severe health problems or mortality in amphibians.

"At this point, we believe the broad body of research conclusively demonstrates that UV-B radiation can cause damage to many species of amphibians at every stage of their life cycle, from egg to adult," said Andrew Blaustein, a professor of zoology at Oregon State University and the lead author on the Ecology commentary. "It appears the damage may be even worse than we originally thought a few years ago, and it's clear that rising levels of UV-B radiation, which could be caused by erosion of Earth's protective ozone layer, can play at least a part in the amphibian declines we're seeing around the world."

Most scientists now believe, Blaustein said, that a wide range of causes explain the totality of amphibian declines, and those causes include habitat destruction, disease, parasites, introduced exotic species, environmental contaminants and other aspects of global climate change. In some cases complex chains of interlaced ecological effects can lead to amphibian disease, deformity or death.

But UV-B radiation is still high on the list of concerns, the researchers say.

"At first our field studies showed only the damage that increased levels of UV-B radiation could do to amphibian embryos, where they caused mortality in some species and not in others," Blaustein said. "But with more research we've se
'"/>

Contact: Andrew Blaustein
blaustea@science.oregonstate.edu
541-737-5356
Oregon State University
1-Jun-2004


Page: 1 2 3

Related biology news :

1. Top Experts To Address Top Food Safety Concerns At IFT Meeting
2. Blacks Environmental Concerns Equal/Exceed Whites
3. Concerns For Australian Sea Lion
4. Reclaimed Waste Water Can Augment Municipal Drinking-Water Supplies But Concerns Must Be Addressed
5. Twin Study May Ease Parents Concerns About Late Talkers, Underscores Impact Of Environment On Language Development
6. Pollution history documented through shell remains provides tool to study ecosystem change
7. Americans knowledge of genetically modified foods remains low and opinions on safety still split
8. More than 700 threatened species remain completely unprotected, new study shows
9. Scientists find fully differentiated blood cells remain able to switch identity
10. Overfishing may diminish genetic diversity even when millions of fish remain
11. Study shows fossil records remain stable in storm beds

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Concerns remain about UVB damage amphibians

(Date:10/15/2014)... the 44th Rosenstiel Award for Distinguished Work in Biomedical ... the mechanisms of genomic instability and its implications for ... second alumnus to win the Rosenstiel Award; the first, ... Alt is the Charles A. Janeway Professor of Pediatrics ... an investigator at the Howard Hughes Medical Institute at ...
(Date:10/14/2014)... shows SIRT6—a protein known to inhibit the growth ... skin cancers by turning on an enzyme that increases ... Previously considered protective, SIRT6 is part of a family ... stability and prevent some of the genetic flaws associated ... lead to cancer. This study, in the journal,s October ...
(Date:10/14/2014)... of the planet,s leading questions is how to produce ... variable climate. The Food and Agriculture Organization of the ... over the next 40 years to feed a growing ... the necessary rise in food production. Plants—grains, cereals, ... supporting livestock. Current research must tap into our ...
Breaking Biology News(10 mins):Brandeis awards 44th Rosenstiel Award to pioneering geneticist Fred Alt 2Two-faced gene: SIRT6 prevents some cancers but promotes sun-induced skin cancer 2Building a bridge from basic botany to applied agriculture 2Building a bridge from basic botany to applied agriculture 3
(Date:10/22/2014)... YORK , Oct. 22, 2014 Nuvilex, ... Federation, approximately 400 million people worldwide are living with ... million people by 2030.  The global market for diabetes ... 2012 approximately 330,000 people worldwide died from pancreatic cancer.  ... death due to cancer in the United ...
(Date:10/22/2014)... and HONG KONG , Oct. ... disease therapeutics enterprise, announced today that rare disease expert ... as vice president, research. Dr. McKew brings more than ... leadership positions at the National Institutes of Health, Wyeth ... by Wyeth). Dr. McKew will lead aTyr,s efforts to expand ...
(Date:10/20/2014)... YORK , Oct. 20, 2014 ... their experimental ZMapp™ antibody therapeutic to fight the ... how difficult and time-consuming the production of pharmaceuticals ... market research publisher said that while some may ... of this compound, those with industry knowledge are ...
(Date:10/20/2014)... , Oct. 20, 2014 Asterias ... the Company has signed a Notice of Grant ... Medicine (CIRM), effective October 1, 2014.  The NGA ... payments and the release of additional grant funds ... grant award for clinical development of Asterias, product, ...
Breaking Biology Technology:Nuvilex Brief Analyst Report: Thinking Outside the Box by BrokerBank Securities, Inc. 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4
Cached News: