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

In nature, ultraviolet radiation from sunlight is not the amphibian killer scientists once suspected.

Naturally occurring murky water and females who choose to lay their eggs in the shade keep embryos of one of the nation's most UV-sensitive amphibian species out of harm's way most of the time, new research shows. Less than 2 percent of the embryos of the long-toed salamander received lethal doses of UV across 22 breeding sites across nearly 8 square miles (20 square kilometers) in Washington state's Olympic National Park.

For a second amphibian, the Cascades frog known to be among the least UV-sensitive Pacific Northwest species the researchers found no instances where eggs received lethal doses.

Declines in amphibian populations around the globe remain a real concern, but the cause is not increasing UV radiation, according to Wendy Palen, lead author and a Simon Fraser University ecologist who conducted the research while earning her doctorate from the UW, and Daniel Schindler, UW professor of aquatic and fishery sciences. The work is being published in the Proceedings of the National Academy of Sciences May 25, and is now available online.

"These findings don't contest hundreds of studies demonstrating the harmful effects of UV radiation for many organisms, including humans," Palen says. "Rather, it points out the need to understand where and when it is harmful."

Papers published in the late 1990s and early 2000s raised the alarm that UV exposure was triggering amphibian declines, with many of the findings based on Pacific Northwest amphibians. Previous research wasn't wrong: some species proved extremely sensitive to UV radiation with especially high mortality for eggs and larvae as shown in physiological studies done mostly in highly controlled laboratory experiments or at just one or two natural ponds or sites, Palen says.

But conditions in labs or a few isolated sites are not what the animals t
'/>"/>

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:12/17/2014)... fundamentally transforming the travel experience and nowhere is this ... decade, ePassports, biometric readers, and secure document scanners have ... via eGates and Automated Passport Control (APC) Kiosks at ... across the globe. According to ...
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the addition of the ... their offering. One major trend emerging ... advances in technology, it is important to upgrade biometric ...
(Date:12/11/2014)... 2014  That blood pressure plays a role in human health ... medical term for high blood pressure – was first described ... cuff that,s used in measuring blood pressure was invented in ... about hypertension, its triggers and its effects. In fact, recent ...
Breaking Biology News(10 mins):Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4
... storage and use of surplus blood samples taken from newborns ... explicit to non-existent, leaving many parents ill-informed about how their ... team led by a member of the Johns Hopkins Berman ... of Utah. A report on their analysis of the subject ...
... Delhi, India The Indian Government today released new tiger ... numbers have increased in the country that has half of ... tiger numbers in India at 1,706, up from 1,411 during ... an additional tiger reserve in the count, the Sundarbans, that ...
... been the leaders in the use of intra-arterial yttrium-90 ... cancer. Now, new results from a large multi-institutional study ... Y-90 than previously tried is safe, provides results when ... can be done on an outpatient basis. This study, ...
Cached Biology News:Most states unclear about storage, use of babies' blood samples, new study finds 2Most states unclear about storage, use of babies' blood samples, new study finds 3Most states unclear about storage, use of babies' blood samples, new study finds 4India releases tiger numbers as experts convene 2Interventional Radiology Y-90 Liver Cancer-busting Treatment: Safe, Fast, Extends Life 2Interventional Radiology Y-90 Liver Cancer-busting Treatment: Safe, Fast, Extends Life 3
(Date:1/22/2015)... Protocol Networks brings independent technology consulting to the ... consultants, Protocol Networks has recently announced its expansion into ... his company has attracted several clients in The Constitution ... as others. With the success of these engagements, Rogers ...
(Date:1/22/2015)... Dr. Greg Leyer of UAS Labs recently was invited ... seminar on probiotics in San Diego, CA. , The ... for health care professionals. This year’s pre-conference seminar was held ... health. Dr. Leyer spoke about the emerging topics and science ...
(Date:1/22/2015)... BRUNSWICK , Nueva Jersey , 22 de ... Award for Biomedical Research abre hoy su llamada a ... personas cuya investigación científica ha hecho, o tiene el ... la salud humana. Las nominaciones se aceptarán hasta el ...
(Date:1/22/2015)... PRINCETON, N.J. , Jan. 22, 2015  Derma ... tissue regeneration company focused on advanced wound care, ... from placental tissues, have been added to the ... announcement increases the opportunity for the AMNIOEXCEL® and ...
Breaking Biology Technology:Protocol Networks Brings Independent Technology Consulting to the Constitution State 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5
... Cardium Therapeutics (NYSE Amex: CXM ) today announced ... U.S. Food and Drug Administration (FDA) seeking marketing clearance ... XL is an advanced wound care management medical ... for use by physicians in patients with topical wounds, ...
... , BENLYSTA(TM) Successful in Second Pivotal Clinical Trial ... (HGS) and GlaxoSmithKline (GSK) today announced positive results from ... trials of BENLYSTA(TM) (belimumab) for treating systemic lupus. ... shared at the 73rd Annual Scientific meeting of the ...
... , KENILWORTH, N.J., Oct. 30 /PRNewswire-FirstCall/ ... ) announced today the U.S. Food and Drug ... to the company,s supplemental Biologics License Application regarding ... of patients with stage III malignant melanoma after ...
Cached Biology Technology:Cardium Announces Plans to File FDA 510(k) Application for U.S. Marketing Clearance of ExcellagenXL(TM) Gel for Diabetic, Pressure and Venous Ulcers and Other Topical Wounds 2Cardium Announces Plans to File FDA 510(k) Application for U.S. Marketing Clearance of ExcellagenXL(TM) Gel for Diabetic, Pressure and Venous Ulcers and Other Topical Wounds 3Cardium Announces Plans to File FDA 510(k) Application for U.S. Marketing Clearance of ExcellagenXL(TM) Gel for Diabetic, Pressure and Venous Ulcers and Other Topical Wounds 4Promise of a New Lupus Treatment Is a Groundbreaking Achievement 2Promise of a New Lupus Treatment Is a Groundbreaking Achievement 3U.S. Food and Drug Administration Issues Complete Response Letter Regarding PEGINTRON(R) for Malignant Melanoma 2U.S. Food and Drug Administration Issues Complete Response Letter Regarding PEGINTRON(R) for Malignant Melanoma 3U.S. Food and Drug Administration Issues Complete Response Letter Regarding PEGINTRON(R) for Malignant Melanoma 4U.S. Food and Drug Administration Issues Complete Response Letter Regarding PEGINTRON(R) for Malignant Melanoma 5U.S. Food and Drug Administration Issues Complete Response Letter Regarding PEGINTRON(R) for Malignant Melanoma 6
...
...
... Specificity: This antibody recognizes murine ... cross-react with other related IRF ... with murine IRF7 protein was ... of the 293T cells transfected ...
...
Biology Products: