Navigation Links
Study finds mercury prevalent in many western fish

ining mercury and we don't really know at what levels they may be affected. In birds, the effects of mercury contamination are neurological or behavioral ?and often subtle. They may not clean their young, or they may leave eggs unattended in their nests.

"We simply haven't done enough studies to know all of the impacts, especially on fish-eating animals," Hughes added.

The study, based on data collected from EPA's Environmental Monitoring and Assessment Program, encompassed nearly 188,000 miles of perennial streams and rivers in the western United States. The selection of the more than 600 creek and river sample sites was done randomly to address regional questions about the prevalence of mercury contamination among fish in western rivers; not to do a stream-by-stream analysis of the impact.

The EPA's "tissue-based water quality criterion" is set at 0.3 micrograms of mercury per gram of fish tissue. In the survey, only 2.3 percent of the stream network that contained large (5 inches or longer) salmonids had mercury levels at or exceeding that 0.3 mg level. Salmonids were the most prevalent group of species, found in 41 percent of the network sampled.

On the other hand, large bass, walleye and other piscivores were found in only 10 percent of the streams and rivers, yet 57 percent of them met or exceeded the 0.3 microgram level.

"The difference in mercury levels between salmonids and piscivores is likely a function of their diet," Hughes said.

"Most of the salmonids we sampled were insect-eaters. Older, very large salmon may respond more like piscivores, but we didn't sample salmonids of that size."

In looking at mercury levels in fish across the West, the most important factors "were where the fish were in the food web, and their ages," Herlihy said. "The older a fish is, the larger it is, and the more fish that it eats, the more likely it is to bioaccumulate mercury."

Mercury levels of 0.1 mi
'"/>

Source:Oregon State University


Page: 1 2 3

Related biology news :

1. Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down
2. Emory Study Tests Bone Marrow Stem Cells to Improve Circulation in Legs
3. UCLA Study Shows One-Third of Drug Ads in Medical Journals Do Not Contain References Supporting Medical Claims
4. Study Demonstrates Gene Expression Microarrays are Comparable and Reproducible
5. Study Links Ebola Outbreaks To Animal Carcasses
6. Breakthrough Microarray-based Technology for the Study of Cancer
7. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
8. Study finds more than one-third of human genome regulated by RNA
9. Leukemia Drug Breakthrough Study In New England Journal Of Medicine
10. Study identifies predictors of HIV drug resistance in patients beginning triple therapy
11. New Study from Affymetrix Laboratories Points to Changing View of How Genome Works
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Study finds mercury prevalent many western fish

(Date:8/28/2014)... the University of Minnesota have developed an animal research ... for muscle regeneration research as well as studies of ... research is published in the current edition of the ... treatment for FSHD, which is thought by many to ... is an unusual genetic disorder because, unlike most genetic ...
(Date:8/28/2014)... Athens, Ga. The support of peer groups ... effective breastfeeding programs, according to recent University of ... mothers in the Athens-Clarke County area determined that ... the outcomes of mothers of infants. , "Mothers ... be successful at breastfeeding," said study co-author Alex ...
(Date:8/28/2014)... Advocate and Senior Staff Attorney at the Electronic Frontier ... of biometric and mobile commerce experts set to speak ... Tampa, Florida on September 15, ... Rahman, Director, Technology and Strategy at Samsung, and Philippe de ... this year,s event is Mobility at the Crossroads of ...
Breaking Biology News(10 mins):UMN researchers find animal model for understudied type of muscular dystrophy 2Breastfeeding study shows need for effective peer counseling programs 2Biometrics UnPlugged Welcomes the Electronic Frontier Foundation's Jennifer Lynch to the Mobility at the Crossroads of Commerce and Privacy Summit 2
... Ore. -- (May 9, 2011) -- High in the sky, ... airborne pollutants such as sulfur dioxide into reactive aqueous particulates. ... emerging research from the University of Oregon provides evidence that ... a pollutant of volcanic gasses and many combustion processes -- ...
... A collaboration between BBSRC, EPSRC and industry has today ... ways of extracting valuable chemicals from the co-products of ... biofuels produces low-value derivatives that are often sold as ... to find ways of processing these by-products to yield ...
... has shown promising results for treating coeliac disease in a ... Phase II trials within the next year. The Phase ... and bioactivity of the vaccine Nexvax2, which has been developed ... by an immune reaction to the gluten protein found in ...
Cached Biology News:Researchers get new view of how water and sulfur dioxide mix 2Public and private sectors unite to make more of brewing by-products 2Celiac disease vaccine shows promising results in Phase I trial 2
(Date:8/29/2014)... 2014 A major challenge before new ... dense realm of Boston-Cambridge, is gaining visibility that can ... Sherley, the Director of Boston’s Adult Stem Cell Technology ... national visibility of his company an important priority since ... addition to a social media marketing campaign ...
(Date:8/28/2014)... 2014 “This kit has an improved extraction ... 0 to 150 ppb,” said Mark Tess, PhD, Mycotoxin Product ... to plant owners and USDA-GIPSA inspection agencies that have a ... can take place in a matter of minutes with nothing ... test the feed and grain before accepting it, but they ...
(Date:8/28/2014)... -- Next month, executives from clinical trial marketing firm BBK Worldwide ... Patient-Centered Clinical Trials 2014 , to be held at ... September 4-5. Patient recruitment experts Bonnie A. Brescia , ... share insights on the benefits of employing an effective patient ... media to mobile apps – can be used to drive ...
(Date:8/28/2014)... BELLINGHAM, Washington, USA (PRWEB) August 27, 2014 ... Colorado next month for SPIE Laser Damage 2014 ... on optical materials for high-power lasers will run 14-17 ... international society for optics and photonics . , The ... key for understanding laser damage to optical materials will ...
Breaking Biology Technology:The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 3The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 4BBK Worldwide Leads Sessions at Key September Events 2Laser Damage to Draw Researchers, Engineers, Scientists to 46th Annual Conference 2Laser Damage to Draw Researchers, Engineers, Scientists to 46th Annual Conference 3
... Ontario and WAKE FOREST, N.C., Feb. 23, 2012 ... ( www.tersusenv.com ) announced today the signing of ... Under the terms of the agreement, Tersus Environmental ... – KB-1® and KB-1® Plus – as well ...
... PRA, a leading Clinical Research Organization, continues our expansion ... of an office in Singapore. The office will serve ... strengthening the quality and timeliness of our deliverables to ... the heart of the city-state, will provide monitoring, project ...
... PARK, Calif., Feb. 23, 2012 Telome Health, Inc.™, ... telomere biology in human health, has announced that co-founder and ... Year by Silicon Valley Business Journal. ... award, especially coming from the heart of innovation, Silicon Valley, ...
Cached Biology Technology:PRA Opens Office in Singapore 2Telome Health Co-founder and Nobel Laureate Elizabeth Blackburn Awarded Innovator of the Year 2
... The H2OBIT is a fully licensed, high throughput, ... processing of up to 24 microplates. This equates ... plates. ,A robotic arm rapidly transfers a ... in temperature ramping times that are considerably faster ...
... Dideoxycytidine Dideoxycytidine is a cytidine analog that ... retroviral activity. Immunogen: Chemical / ... The specificity of the ddC antiserum was ... of ddC to moles of ddC analog at ...
... series of Class II Biological Safety ... certification to the world's highest safety ... the cabinets cannot be adjusted out ... low noise and arm rest ensure ...
... HM-4000 Multidizer is designed with a variety ... rotating - all in one unit. Shake, ... independently operating compartments allow for hybridization and ... motion , The upper chamber uses ...
Biology Products: