Navigation Links
Mercury in dolphins: Study compares toxin levels in captive and wild sea mammals
Date:5/21/2012

Amid growing concerns about the spread of harmful mercury in plants and animals, a new study by researchers from The Johns Hopkins University and The National Aquarium has compared levels of the chemical in captive dolphins with dolphins found in the wild. The captive animals were fed a controlled diet, while the wild mammals dined on marine life that may carry more of the toxic metal.

The study found lower levels of mercury in the captive animals, particularly compared to wild dolphins tested off the Atlantic and Gulf coasts of Florida, a state that is in the path of mercury-laden fumes from power plants. The aquarium dolphins are fed smaller fish from North Atlantic waters, where mercury pollution is less prevalent.

The findings were published in a recent issue of Science of the Total Environment.

Although these results represent a significant case study, the research focused on a small number of animals, and Edward Bouwer, chair of the Department of Geography and Environmental Engineering at Johns Hopkins and supervisor/co-author of the study, cautioned against drawing wide-ranging conclusions from the research.

"This is just one snapshot, one puzzle piece," said Bouwer. "What we'd like to do now is repeat this project with aquariums in other parts of the world. The goal is to get a clearer comparison of mercury-related health risks facing dolphins both in captivity and in the wild. This type of research can give us hints about how the type of diet and where it originated can affect mercury-related health problems in captive dolphins, compared to their cousins in the wild."

Public health officials are concerned about human consumption of mercury, particularly in a form called methylmercury, because it can damage the brain and other parts of the nervous system, especially in young children. Dolphins that ingest too much methylmercury can suffer similar harm.

Mercury is emitted as a gas from coal- and oil-f
'/>"/>

Contact: Phil Sneiderman
prs@jhu.edu
443-287-9960
Johns Hopkins University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Study finds Caribbean-American women at higher risk for elevated mercury levels
2. Upper atmosphere facilitates changes that let mercury enter food chain
3. Huskies lend insight into mercury risk
4. Mercury pollution in the Great Lakes region -- nearly forgotten, but not gone
5. Soil samples reveal urban mercury footprints
6. Mercury vapor released from broken compact fluorescent light bulbs can exceed safe exposure levels
7. Mercury on the rise in endangered Pacific seabirds
8. Bacterial genome may hold answers to mercury mystery
9. Researchers from Hebrew U., US discover how mercury gets into fish we eat
10. End of an era: NIST to cease calibrating mercury thermometers
11. Mercury in Bay Area fish a legacy of California mining
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mercury in dolphins: Study compares toxin levels in captive and wild sea mammals
(Date:8/25/2015)... BELLEVUE, Wash. , Aug. 25, 2015 ... systems, announced today it will unveil its "Guardian S" ... at the National Tactical Officers Association Conference on August ... Guardian S is the first-ever commercially available energetically autonomous ... research and in-field trials and is protected by more ...
(Date:8/20/2015)... , Aug. 20, 2015   Sensory, ... on improving the user experience and security of ... technologies, today announced that its TrulySecure™ ... authentication software to be FIDO Certified™. ... for compliance with the FIDO UAF (Universal Authentication ...
(Date:8/18/2015)... DUBLIN , Aug. 17, 2015 ... the addition of the "Global Biometric Authentication ... Application - Estimation & Forecast, 2015-2020" report ... biometric authentication and identification systems market is expected ... from 2015 to 2020 and generate over $25 ...
Breaking Biology News(10 mins):Sarcos to Debut First-of-its-Kind Snake Robot 2Sarcos to Debut First-of-its-Kind Snake Robot 3TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 2TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 3TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 4TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 5Global Biometric Authentication & Identification Market 2015: Focus On Modality, Motility & Application - Estimation & Forecasts to 2020 for the $25 Billion Industry 2
... voices is second nature to humans. Certain primates also ... social groups are also able to do so, however, ... for meerkats. They coordinate their activities with calls, such ... for instance, and thus stick together as a group. ...
... publishing workflow of eight journals published by Pensoft has ... data archiving for data files associated with articles in these journals. ... the online editorial management platform, Pensoft Journal System (PJS). The ... MycoKeys , BioRisk , NeoBiota , Nature Conservation ...
... Studies have estimated that converting manure from the 95 million ... equal to 8 billion gallons of gasoline, or 1% of ... and more farmers and communities are interested in generating renewable ... information on the economic feasibility and sustainability of such programs. ...
Cached Biology News:Meerkats recognize each other from their calls 2Data publishing in Pensoft journals integrated with the Dryad Data Repository 2Does converting cow manure to electricity pay off? 2
(Date:8/31/2015)... - Portage Biotech Inc. ("Portage" or "the Company") (OTC ... announce that its wholly owned subsidiary, Portage Pharmaceuticals Ltd. ... an Investigational New Drug (IND) application for the topical ... completed a study in a rat model of dry ... efficacy and a more rapid onset of action than ...
(Date:8/31/2015)... , Aug. 31, 2015 LabStyle Innovations ... Management Solution, today announced it recently closed a ... will be used to support the global rollout ... a mobile, cloud-based, diabetes management solution that includes ... pocket-sized, blood glucose monitoring device, and for working ...
(Date:8/31/2015)... ... August 31, 2015 , ... Proove Biosciences, Inc. is a ... Annual High Tech Awards. , Now in its 22nd year, this premier awards ... innovation here, across the nation and around the world. The OC Tech Alliance will ...
(Date:8/28/2015)... PA (PRWEB) , ... August 28, 2015 , ... ... Chairman, Chuck Gardner, has organized and will present a session on chemical spectroscopic ... 2. This conference and exposition is Asia’s largest analytical and scientific instruments show ...
Breaking Biology Technology:Portage's PPL will advance its lead candidate PPL-003 to an IND for dry eye disease and uveitis 2Portage's PPL will advance its lead candidate PPL-003 to an IND for dry eye disease and uveitis 3LabStyle Innovations Closes $2.5 Million Funding to Support Global Rollout of Dario Diabetes Management Solution 2LabStyle Innovations Closes $2.5 Million Funding to Support Global Rollout of Dario Diabetes Management Solution 3LabStyle Innovations Closes $2.5 Million Funding to Support Global Rollout of Dario Diabetes Management Solution 4Proove Biosciences, Inc. Named a Finalist for 22nd OC Tech Alliance High-Tech Awards for Company of the Year 2Proove Biosciences, Inc. Named a Finalist for 22nd OC Tech Alliance High-Tech Awards for Company of the Year 3Proove Biosciences, Inc. Named a Finalist for 22nd OC Tech Alliance High-Tech Awards for Company of the Year 4U.S. Symposium on Imaging Organized by Pittcon’s Program Chairman Chuck Gardner 2U.S. Symposium on Imaging Organized by Pittcon’s Program Chairman Chuck Gardner 3
... Venture: QPT, EDMONTON, June 2 /PRNewswire-FirstCall/ - ... today announced that its 12-patient,Phase I clinical study ... for,the Photodynamic Therapy of Actinic Keratosis" has met ... delighted to have received, for the first time, ...
... (TSX: GEN), a,company focused on developing blood-based biomarker ... health management, today announced,management changes to support the ... May 31, 2008, Dr. K. Wayne Marshall has ... duties as Chief Clinical Scientist for GeneNews. Dr.,Marshall ...
... Tests identify genetic mutations that can affect patient response to ... ... Roche and DxS Ltd. have,signed an exclusive distribution agreement for the ... tests are,intended, when considered with other clinically relevant factors, to aid,doctors ...
Cached Biology Technology:Quest PharmaTech Announces Positive Results from Phase I Clinical Trial of its Photodynamic Therapy for Actinic Keratosis 2Quest PharmaTech Announces Positive Results from Phase I Clinical Trial of its Photodynamic Therapy for Actinic Keratosis 3GeneNews announces management changes to support commercialization of ColonSentry(TM) 2Roche Signs Exclusive Distribution Deal with DxS for K-RAS and EGFR Cancer Mutation Tests 2Roche Signs Exclusive Distribution Deal with DxS for K-RAS and EGFR Cancer Mutation Tests 3
... Nepheloskan Ascent is the first ... in microplates. Nepheloskan measures light ... technique for particle quantification. This ... testing in drug discovery, immunoprecipitation, ...
Anti-VDAC (Voltage-Dependent Anion Channel) AVOID FREEZE/THAW CYCLES. Recognizes the porin 31HL protein. Corresponds to mAb 1 in the literature....
6 x Blend of rTth DNA Polymerase and Tli to provide optimized amounts of both 5-3 and 3-5 proofreading activity...
... are used to assess the effect of drugs ... mice and rats using one unit in a ... animals are placed on textured drums to avoid ... sensing platforms below, its test results are recorded. ...
Biology Products: