Navigation Links
Ultraviolet radiation not culprit killing amphibians, research shows
Date:5/24/2010

ypically encounter in the wild and they do not behave in labs as they do in their natural habitat, the new study of a large number of breeding sites, 22 altogether, revealed.

"When simple tests of species physiology are interpreted outside of the animal's natural environment, we often come to the wrong conclusions," Palen says.

For one thing there are lots of "natural sunscreens" in the water. They are in the form of dissolved organic matter remnants of leaves and other matter from wetlands and terrestrial areas that are dissolved in the water, much like tea dissolved in a mug of water. The more dissolved organic matter, the less UV exposure.

And places where the water is more crystal clear, the females from the susceptible salamander behaved differently.

"There hasn't been a lot of work on whether organisms are capable of sensing UV intensity, but these salamanders certainly do," Schindler says. "They change their behavior, with the females laying their eggs in the shade when the clarity of the water puts their eggs at risk."

If for some reason UV radiation were to become much more intense, it could reach a point where amphibians can't behave in ways that protect them, Palen says. But the restrictions on the use of ozone-depleting chemicals, under what's called the Montreal Protocol, appear to be helping restore the ozone layer, which filters the amount of UV radiation reaching Earth.

"By critically evaluating what appear to be threats to ecosystems, we can refine our research and conservation priorities and move onto those that will make a difference in helping amphibians survive," Palen says.

The study area includes one of the richest amphibian habitats in northwest Washington's Olympic National Park. The work was conducted in the Seven Lakes Basin of the Sol Duc drainage in subalpine terrain, that is, on mountain sides just at the point trees struggle to grow.

Palen and Schindler intentiona
'/>"/>

Contact: Sandra Hines
shines@u.washingotn.edu
206-543-2580
University of Washington
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Ultraviolet light helps to secure water supply
2. Study raises new concerns about radiation and breast cancer
3. First trial of pemetrexed with radiation and chemo in lung cancer shows promising results
4. Tool allows precise targeting of radiotherapy for cancer radiation therapy
5. Smoking during radiation therapy for head and neck cancers linked to poorer outcomes
6. Age, gender can affect risk to radiation treatment
7. E-beam and X-ray irradiation technologies
8. Epigenetics could help researchers determine any risks associated with low-dose radiation
9. Duke awarded up to $43 million to develop test for dirty bomb/radiation exposure
10. Discovery makes brain tumor cells more responsive to radiation
11. Patients in Europe benefit from new radiation therapy
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Ultraviolet radiation not culprit killing amphibians, research shows
(Date:4/23/2014)... A biomedical engineer at the University of Houston ... make blood transfusions safer. His work is supported by ... Health (NIH). , Blood transfusions save millions of ... absolute necessities. Without them, for instance, routine surgeries would ... however. There,s strong evidence that transfusions of red blood ...
(Date:4/23/2014)... used to read quickly. It involves visual searching ... and/ or sentences. Similarly to humans, biological systems ... genetic information. Genes that need to be read ... encoding message, the easier it will be to ... de Cincia (IGC, Portugal) and Centre for Molecular ...
(Date:4/23/2014)... one can argue that if we were to follow a ... we canthen we can solve the climate problem without doing ... climate researchers, in the current issue of Bulletin of ... significant action on climate change now makes it more likely ... Wigley explains in an exclusive Bulletin interview. ...
Breaking Biology News(10 mins):UH biomedical engineer works to make blood transfusions safer 2UH biomedical engineer works to make blood transfusions safer 3Cell division speed influences gene architecture 2Is nuclear power the only way to avoid geoengineering? 2
... fundamental building block of nearly all living material: carbon. ... for bacteria. Methane is produced in oxygen-free environments and ... The Brazilian post-doctoral researcher in biology and ecology, Angela ... lakebeds to be present in fish tissue. The study ...
... This release is available in German . Vitamin ... cells and the functioning of the nervous system. Unable to produce ... animal proteins. So far it has been known that on its ... so-called lysosomes. From there, the vitamin enters the cell interior with ...
... CITY, MOTwo opposing teams battle it out to regulate ... activators, keeps DNA open to enzymes that transcribe DNA ... twisting DNA into an inaccessible coil around histone proteins, ... by enzymes that elongate an RNA strand. Both ...
Cached Biology News:How methane becomes fish food 2Vitamin B12 deficiency: Tracing the causes 2Controlling gene expression: How chromatin remodelers block a histone pass 2Controlling gene expression: How chromatin remodelers block a histone pass 3
(Date:1/15/2014)... (PRWEB) January 15, 2014 Look inside ... hard-working items for the lab, from fluid handling to ... (GIS)—ready to ship when you order. , Preferred ... Pumps , from the L/S® model for precise flow ...
(Date:1/15/2014)... (PRWEB) January 15, 2014 This webinar ... nonclinical and clinical safety assessment in biosimilars. , Regulatory ... for biosimilar drug development, however the complex nature of ... quality, safety and efficacy extremely challenging. Based on the ...
(Date:1/15/2014)... 2014 The Microcompetition with Foreign DNA theory ... of these latent viruses is the Epstein Barr Virus (EBV), ... arthritis (RA) is a chronic inflammatory disease that destroys the ... that RA patients have high concentrations of EBV DNA in ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider ... treatment of tinnitus. Patients listen to sound therapy that ... period of weeks to months, their tinnitus volume decreases. , ... Notched Music and Notched White Noise. Now, AudioNotch is pleased ...
Breaking Biology Technology:Cole-Parmer Begins 2014 with the Release of Preferred Solutions 2Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3
... be challenged by the intervention of California Governor Arnold ... Bush administration, whose campaign he supports, Schwarzenegger announced on ... Proposition 71 , a California initiative on the ... the sale of $3 billion in bonds, and lay ...
... owns worldwide make batteries, lights and personal grooming products, ... other products. The company employs about 5,000 people. Ben ... engineer Mike Gutknecht; Brent Leland, director of business IT; ... effect of Sarbanes-Oxley on IT processes, myths about ROI ...
... in Wisconsin Rapids, will lead an interstate effort to ... Governor Jim Doyle has announced. , ,The college will ... National Science Foundation, some of which will fund a ... money will also help launch a national training network ...
Cached Biology Technology:Stem-cell support from Schwarzenegger could shake Wisconsin leadership 2Stem-cell support from Schwarzenegger could shake Wisconsin leadership 3Stem-cell support from Schwarzenegger could shake Wisconsin leadership 4Rayovacs IT team discusses network security, Sarbanes-Oxley and ROI myths 2Rayovacs IT team discusses network security, Sarbanes-Oxley and ROI myths 3Rayovacs IT team discusses network security, Sarbanes-Oxley and ROI myths 4Rayovacs IT team discusses network security, Sarbanes-Oxley and ROI myths 5Wisconsin to train tech-savvy paper industry with share of $5 million grant 2
These Costar 96-well, flat-bottom polystyrene EIA plates are used for EIAs, ELISAs, and other protein binding assays. Supplied as box of 100 (20 packages; 5 plates per package)....
... Assay provides a convenient method to probe conformational ... MDR1 substrates. Thus, the kit may be used ... act as transport substrates for MDR1. Because UIC2 ... MDR1 substrates, the MDR1 Shift Assay can be ...
... The wide and long ... of Polaroid gel documentation systems. ... holds the camera in place ... that allows photography on the ...
... are derived from Paraffin embedded tissue blocks, ... procedures to ensure the highest quality. Tissues ... one block, sectioned at a thickness of ... Sections are large (3-5 mm in diameter) ...
Biology Products: