Navigation Links
Pitt research suggests EPA pesticide exposure test too short, overlooks long term effects
Date:8/17/2009

within 200 meters. The EPA estimates that surface drinking water can have chronic endosulfan levels of 0.5 to 1.5 ppb and acute concentrations of 4.5 to 23.9 ppb.

Leopard frogs, spring peepers, and American toads fared well during the experiment's first four days, but once they were in clean water, the death rate spiked for animals previously exposed to 35 and 60 ppb. Although the other six species did not experience the lag effect, the initial doses of endosulfan were still devastating at very low concentrations. Grey and Pacific tree frogs, Western toads, and Cascades frogs began dying in large numbers from doses as low as 7 ppb, while the same amount killed all green frog and bullfrog tadpoles.

The endosulfan findings build on a 10-year effort by Relyea to understand the potential links between the global decline in amphibians, routine pesticide use, and the possible threat to humans in the future.

A second paper by Relyea and Jones also in the current Environmental Toxicology and Chemistry expands on one of Relyea's most notable investigations, a series of findings published in Ecological Applications in 2005 indicating that the popular weed-killer Roundup is "extremely lethal" to amphibians in concentrations found in the environment. The latest work determined the toxicity of Roundup Original Max for a wider group of larval amphibians, including nine frog and toad species and four salamander species. The report is available on Pitt's Web site at www.pitt.edu/news2009/Roundup.pdf

In November 2008, Relyea reported in Oecologia that the world's 10 most popular pesticideswhich have been detected in naturecombine to create "cocktails of contaminants" that can destroy amphibian populations, even if the concentration of each individual chemical is within levels considered safe to humans and animals. The mixture killed 99 percent of leopard frog tadpoles and endosu
'/>"/>

Contact: Morgan Kelly
mekelly@pitt.edu
412-624-4356
University of Pittsburgh
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Research shows skeleton to be endocrine organ
2. Newly created cancer stem cells could aid breast cancer research
3. Dominant cholesterol-metabolism ideas challenged by new research
4. Researchers identify proteins involved in new neurodegenerative syndrome
5. Texas researchers and educators head for Antarctica
6. MGH researchers describe new way to identify, evolve novel enzymes
7. University of Pennsylvania researchers develop formula to gauge risk of disease clusters
8. University of Oregon researcher finds that on waters surface, nitric acid is not so tough
9. U of MN researchers discover noninvasive diagnostic tool for brain diseases
10. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
11. Story ideas from the Journal of Lipid Research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... Wash. , Nov. 20, 2014 C-Labs ... for the Internet of Things (IoT), today announced the ... of chief operating officer. Previously a strategic advisor to ... finance, and operations. Mr. Traynor is based out of ... . He reports to Chris Muench , Chief ...
(Date:11/18/2014)... NEW YORK , Nov. 18, 2014 /PRNewswire/ ... iris-based identity authentication solutions, and MorphoTrust USA ... solutions and services, today announced a strategic partnership ... across enterprise, motor vehicle administration (MVA), airport screening ... leader in identity-related solutions, MorphoTrust serves consumers through ...
(Date:11/7/2014)... led by Dr. Debra Auguste, associate professor, biomedical ... The City College of New York, have identified ... for one of the most aggressive forms of ... have a high mortality rate owing to aggressive ... therapeutic options. However, Professor Auguste,s team, discovered the ...
Breaking Biology News(10 mins):C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3
... training video produced by Rafael Ortega, MD, the vice-chair ... Boston Medical Center (BMC) and professor of anesthesiology at ... is featured in this week,s New England Journal ... is the fifth BMC-produced video to appear in the ...
... After 30 years with Chip Supply, Inc., President ... Perrott served in various capacities through the ... tenure, Chip Supply grew into the largest independent die ... global provider of high reliability interconnect solutions, serving the ...
... BUFFALO, NY -- Exposure to air pollution early in life ... may alter her DNA and may be associated with premenopausal ... Buffalo have shown. The findings indicated that higher air ... increase levels of E-cadherin, a protein important to the adhesion ...
Cached Biology News:Pulse oximetry training video by BMC anesthesiologist published in NEJM 2Air pollution exposure affects chances of developing premenopausal breast cancer 2
(Date:12/17/2014)... Ipsen Biopharmaceuticals, Inc., an affiliate ... IPSEY), today announced that Somatuline® Depot® (lanreotide) ... approved by the U.S. Food and Drug Administration ... (GEP-NETs) in adult patients with unresectable, well or ... improve progression-free survival (PFS). , “The approval of ...
(Date:12/17/2014)... 17, 2014 Gene synthesis and ... has entered into a technology access and services ... apply DNA2.0’s proprietary protein engineering technology, known as ... “We are extremely excited that the global leader ... This proprietary bioengineering technology has now been validated ...
(Date:12/17/2014)... , Dec. 17, 2014 CASI Pharmaceuticals, Inc. ... to the acquisition, development and commercialization of innovative therapeutics ... global market with a primary commercial focus on ... been granted a Type C meeting with the U.S. ... will be held in February 2015.  During this meeting ...
(Date:12/15/2014)... & PETACH TIKVAH, Israel , Dec. ... BCLI ), a leading developer of adult stem ... subsidiary Brainstorm Cell Therapeutics Ltd. was awarded a grant ... Office of the Chief Scientist (OCS).  This is ... of grant support from the Office of the Chief ...
Breaking Biology Technology:Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 2Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 3Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 4Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 5Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 6Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 7Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 8ADM and DNA2.0 Enter Into Protein Engineering Technology Access and Service Agreement 2CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 2CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 3CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 4CASI Pharmaceuticals Granted Type C Meeting With U.S. FDA For ENMD-2076 In Fibrolamellar Carcinoma 5BrainStorm Receives $1,100,000 for its 8th Annual Non-Dilutive Grant from Israel's Chief Scientist Office 2BrainStorm Receives $1,100,000 for its 8th Annual Non-Dilutive Grant from Israel's Chief Scientist Office 3
... 18 Martek Biosciences,(Nasdaq: MATK ) announced today ... patented, vegetarian form of DHA omega-3 for brain, eye,and ... vegetarian DHA,Oroweat 9 Grain Bread with life,sDHA from Bimbo ... Pacific Northwest, California, Arizona,and Nevada., "This new launch ...
... Baxter,International Inc. (NYSE: BAX ) announced today ... an additional $2 billion of the company,s,common stock to ... authorization., Baxter has less than $700 million of ... that was authorized in March,2007. Shares will be repurchased ...
... Calif., March 18 TorreyPines Therapeutics,Inc. (Nasdaq: ... Phase II study of,NGX267, a muscarinic agonist in ... syndrome., The company is conducting a randomized, ... to evaluate,the safety, tolerability and efficacy of this ...
Cached Biology Technology:Martek Announces Launch of Oroweat 9 Grain Bread, First Bread with Martek's life'sDHA 2Martek Announces Launch of Oroweat 9 Grain Bread, First Bread with Martek's life'sDHA 3Baxter's Board of Directors Approves New Share Repurchase Authorization of $2 Billion 2TorreyPines Therapeutics Initiates Phase II Study of Muscarinic Agonist NGX267 for Treatment of Xerostomia 2TorreyPines Therapeutics Initiates Phase II Study of Muscarinic Agonist NGX267 for Treatment of Xerostomia 3TorreyPines Therapeutics Initiates Phase II Study of Muscarinic Agonist NGX267 for Treatment of Xerostomia 4
Tube-O-DIALYZER Floats, small....
Nestin, Human...
Rabbit polyclonal to Survivin DEx3 ( Abpromise for all tested applications). entrezGeneID: 332 SwissProtID: O15392...
Smac/DIABLO (mouse) (CT) rabbit polyclonal antibody...
Biology Products: