Navigation Links
International team shows mercury concentrations in fish respond quickly to increased deposition
Date:9/17/2007

A joint Canadian-American research team have, for the first time, demonstrated that mercury concentrations in fish respond directly to changes in atmospheric deposition of the chemical. The international teams research began in 2001 at the Experimental Lakes in Northern Ontario and is featured in this weeks Proceedings of the National Academy of Sciences.

Up to now a direct link has been difficult to establish because of all the other factors that affect mercury levels in fish and large pools of mercury already in the environment, said lead author Reed Harris of Tetra Tech. By adding stable mercury isotopes to an entire ecosystem for several years, our team was able to zero in on the effects of changing atmospheric mercury deposition.

The results were very dramatic, said co-author Dr. Andrew Heyes of the University of Maryland Center for Environmental Science Chesapeake Biological Laboratory. Using the stable isotope approach has revealed a great deal about the cycling of mercury in watersheds. We look forward to continuing our study to provide guidance in mitigating the legacy left by the years of high mercury deposition.

To directly test the response of fish contamination to changing mercury deposition, researchers conducted a whole-ecosystem experiment, increasing the mercury load to a lake and its watershed by the addition of enriched stable mercury isotopes. The isotopes allowed the team to distinguish between experimentally applied mercury and mercury already present in the ecosystem and to examine bioaccumulation of mercury deposited to different parts of the watershed. Fish methylmercury concentrations responded rapidly to changes in mercury deposition over the first three years of study.

This is good news. It means that a reduction in new mercury loads to many lakes should result in lower mercury in fish within a few years, added Cynthia Gilmour of the Smithsonian Environmental Research Center and University of M
'/>"/>

Contact: Christopher Conner
cconner@umces.edu
443-496-0095
University of Maryland Center for Environmental Science
Source:Eurekalert

0

GOOD

Page: 1 2

Related biology news :

1. International trial of two microbicides begins
2. International HapMap consortium expands mapping effort
3. Solutions that reduce death of marine life reeled in by International Smart Gear Competition
4. Canadian youth 4th highest in international obesity study
5. International Team Determines Geographic Origin of Leprosy
6. Team of international scientists departs today to discover the unknown in Chinas Himalayan region
7. Tropical dry forests receive international recognition
8. Open Source Biotechnology alliance for international agriculture
9. International HIV/AIDS trial finds continuous antiretroviral therapy superior to episodic therapy
10. Five surprising facts about starvation that could change the international agenda
11. CHAVI announces international search for genes affecting HIV response
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2008)...August 20, 2008 New phase 2 data published today ... drug PTC124 demonstrates activity in nonsense-mut...eatment with PTC124 results in statistically signi...on of patients with nonsense-mutation CF. The stu... Hospital in Jerusalem, Israel and sponsored by PT...
(Date:8/20/2008)... - Engineers have created a tiny motorized ,posit...lar devices being ,developed for applications tha...owerful computer hard drives. , The device, call...nanoscale manipulator" that precisely moves or sen... used in watery environments for probing ,biologi...
(Date:8/20/2008)...8) The genetic code of a simple saltwater creatur...ps of genes function in humans and other species. ...ture breaks down the genetic code of Trichoplax ...anywhere in the world, even in the common househol... Trichoplax , genes that are also found in other a...
(Date:8/20/2008)...or suppressor gene controls numerous biological pr...and death. But PTEN is frequently lost or mutated;...g various types of human cancer that PTEN has beco... suppressors. , Now, a study led by researchers ...nd Harvard Medical School provides important new i...
Breaking Biology News(10 mins):PTC124 shows activity in cystic fibrosis; Phase 2 proof-of-concept data published in Lancet 2PTC124 shows activity in cystic fibrosis; Phase 2 proof-of-concept data published in Lancet 3New 'nano-positioners' may have atomic-scale precision 2New 'nano-positioners' may have atomic-scale precision 3Genome of saltwater creature could aid understanding of gene grouping 2New insights into the regulation of PTEN tumor suppression function 2Study questions impact of hemoglobin variations on mortality in dialysis patients 7637 1Study questions impact of hemoglobin variations on mortality in dialysis patients 7637 2Survey Shows Broad Support Among Americans for Pharmacy Technician Certification 7632 1Survey Shows Broad Support Among Americans for Pharmacy Technician Certification 7632 2Managing the Service to Sales Cultural Transformation Complimentary Excerpt Available from Best Practices 7627 1Managing the Service to Sales Cultural Transformation Complimentary Excerpt Available from Best Practices 7627 2Escape the Cold and Flu Season With a Free Vacation to the Sunshine State 7622 1Escape the Cold and Flu Season With a Free Vacation to the Sunshine State 7622 2
... and the general public alike have been acutely aw...m a flu pandemic. Although many people might still...infamous 1918-1920 pandemic--and the possibility o... trepidation. , Strangely, researchers still do...rticular strain of the flu virus in that pandemic,...
...l warming? Perhaps, but the tradeoffs involved are...te generated each year and a greatly increased ris... nuclear material into terrorists, hands. , So co...ing, who has analyzed just how much nuclear power ...greenhouse gas emissions worldwide, and the implic...
...for infecting cornea cells that may also explain h...dy by researchers at the University of Illinois at... in the Sept. 25 issue of the Journal of Cell Biol..., the strain that causes cold sores on the mouth, ..., the clear, domed surface that forms the eye,s ou...
... today unveiled a detailed map of human genetic va...x (MHC), the most important region of the human ge...oimmune disease and organ transplantation. The wor...c variability for this fundamental immune region a...ts aimed at uncovering the genetic roots of immune...
Other Biology News:Recurrence of a flu pandemic similar to infamous 1918 flu could kill 62 million 2Recurrence of a flu pandemic similar to infamous 1918 flu could kill 62 million 3Plutonium or greenhouse gases? Weighing the energy options 2Study shows how herpes infects cornea, evades immune cells 2International team analyzes human genetic variation in key immune region 2International team analyzes human genetic variation in key immune region 3
(Date:8/21/2008)... NEW YORK, MUNICH, Germany and AMSTERDAM, Neth...thcare and SpePharm Holding, B.V., the,pan-Europea...d that they,have entered into a euro 10 million re...fund SpePharm,s acquisition of Dantrium(R) for Eur...le Pharmaceuticals. At the same,time, TVM Capital,...
(Date:8/20/2008)... VIENNA, Va., Aug. 20 /PRNewswire-USNewswire/ ...0 ranking of the fastest-growing private companies...T) services provider,MicroTech, ranks No. 285 on ... 2008 Inc. 500 list measures revenue growth from 2...U.S.-based, privately held, independent -,no subsi...
(Date:8/20/2008)... INDIANAPOLIS, Ind., Aug. 20 /PRNewswire-First... announced that it has completed the acquisition,o...n Diego-based,biotechnology company focused on dru...y. The completion of the deal followed today,s Spe...SGX stockholders voted in,favor of the merger agre...
(Date:8/20/2008)... Growth Fueled by Popularity with Seniors and ... Marketing, CAMBRIDGE, Mass., Aug. 20 /PRNewswi...hole Health (SWH), a voluntary health care plan fo...ng private company in the,United States., Part of...rowing,companies, SWH had revenue growth of 31,000...
Breaking Biology Technology:TVM Capital, Signet Healthcare Partners and Paul Capital Healthcare Enter into euro 26 Million Financing of SpePharm 2TVM Capital, Signet Healthcare Partners and Paul Capital Healthcare Enter into euro 26 Million Financing of SpePharm 3TVM Capital, Signet Healthcare Partners and Paul Capital Healthcare Enter into euro 26 Million Financing of SpePharm 4TVM Capital, Signet Healthcare Partners and Paul Capital Healthcare Enter into euro 26 Million Financing of SpePharm 5MicroTech Ranks No. 285 on Inc. Magazine's 2008 List of the 500 Fastest Growing Private Companies in America 2Lilly Announces Completion of SGX Acquisition 2Inc. Magazine Names Senior Whole Health the Number One Fastest-Growing Private Company in US 2Inc. Magazine Names Senior Whole Health the Number One Fastest-Growing Private Company in US 3
...ast purification of up to 10 mg ultrapure , ...s and benefits , , Up to 10 mg...ates from up to 2.5 liters of LB culture without c...asmid purification time , Fast, easy, a...volumes , , , , * A...
...quality short interfering RNA (siRNA) from QIAGEN ...otic cell culture by targeting complementary endog...ference (RNAi), enables targeted gene , sil... offers a custom siRNA , oligonucleotide sy...ions , and also library siRNAs directed aga...
...IAGEN Multiplex PCR Kit is designed for , h... the need for time-consuming , optimization... , No optimization required easy ass...to-use master mix , High specificity an... , DNA Polymerase and increased sensiti...
...eas Pahl, Uwe Oelmller,* and Susanne , Ullm...ity of Erlangen, Erlangen, Germany , , ... , , , Drug library screening based on...le and reproducible methods of RNA purification ,...CR analysis. This article demonstrates , ho...
Other Biology Technology:QIAfilter Plasmid Kits 2Custom and library siRNA for efficient gene silencing 2Custom and library siRNA for efficient gene silencing 3Custom and library siRNA for efficient gene silencing 4QIAGEN Multiplex PCR Kit 2QIAGEN Multiplex PCR Kit 3High-throughput gene expression analysis to screen for anti-asthma drugs 2High-throughput gene expression analysis to screen for anti-asthma drugs 3High-throughput gene expression analysis to screen for anti-asthma drugs 4
53 new primer sets added in Dec 2005 , Quantitative results in less than 3 hours , Detection from as little as 25 pg of total RNA , Specific primers available for hundreds of mammalian miRNAs
jub, ajuba homolog (Xenopus laevis)
Recommend to use at up to 5000X dilutions for cell culture (e.g. Add 1 ul to 1 ml of culture medium.)
Prepared in distilled water.
Biology Products: