Navigation Links
Illinois river otters exposed to chemicals banned decades ago
Date:10/19/2013

of the banned pesticide DDT) were similar to those in the earlier study, the researchers report.

"The PCBs, dieldrin and DDE were the contaminants that we detected in highest concentration, in terms of average concentrations," Carpenter said. "And male river otters had significantly higher concentrations of PCBs compared to females."

PCBs were once used as insulators and coolants in motors and electrical systems, but were banned in 1979 in the U.S. after studies found that exposure to these compounds caused cancer and other deleterious health effects in animals. PCBs are classified as "probable human carcinogens" and there are fish consumption advisories for this contaminant in many Illinois rivers.

DDT was banned in the U.S. in the early 1970s after decades of widespread use. Studies indicated that DDT and DDE contribute to eggshell thinning in several bird species and are toxic to fish, shellfish and other organisms. In mammals, these compounds can cause gene disruption and interfere with hormone function, particularly in a developing fetus.

Dieldrin was used extensively to kill crop pests, termites and mosquitoes before it was banned in 1987 in the U.S. Its use in the Midwest agricultural belt was particularly pronounced. Before these compounds were banned, U.S. farmers applied more than 15 million pounds of dieldrin and aldrin (its parent compound) to their crops every year -- much of it in the Midwest.

"Some studies (of dieldrin) exposure find links to cancer, Parkinson's disease and Alzheimer's and some do not," Carpenter said. "But perhaps most concerning is that both dieldrin and PCBs can act as developmental neurotoxicants, meaning that developing fetuses can be harmed at concentrations much smaller than those that can impact the health of adults."

Concentrations of contaminants in river otters ranged widely. One male had a concentration of PCBs in its liver of 3,450 parts per billion (ppb), while ano
'/>"/>

Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Illinois scientists put cancer-fighting power back into frozen broccoli
2. University of Illinois researchers develop AFM-IR for nanometer scale chemical identification
3. Illinois town provides a historical foundation for todays bee research
4. University of Illinois receives grant to study ozone resistance in corn
5. University of Illinois to improve crop yield through photosynthesis in a new global effort
6. University of Illinois at Urbana-Champaign awarded 5-year grant from NASA
7. University of Illinois professor develops tool that helps dietitians deliver info clients need and can understand
8. Dams provide resilience to Columbia River basin from climate change impacts
9. Drought, river fragmentation forcing endangered fish out of water, biologist finds
10. Amazon River exhales virtually all carbon taken up by rain forest
11. Public lecture at UC Riverside to discuss challenges in assessing human impact on ecosystems
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Illinois river otters exposed to chemicals banned decades ago
(Date:9/19/2014)... A new study shows that legume plants regulate ... cytokininssignaling molecules that are transmitted through the plant ... the number of bacteria-holding nodules in the roots. ... the National Institute for Basic Biology, the Graduate ... Center for Sustainable Resource Science in Japan. ...
(Date:9/18/2014)... Colo., USA Miranda, a small, icy moon of ... enigmatic bodies in the solar system. Despite its relatively ... of intense resurfacing that resulted in the formation of ... polygonal-shaped regions called coronae. , These coronae are ... at least 200 km across. Arden corona, the largest, ...
(Date:9/18/2014)... "frequent flyers" program, fruit flies surely would be eligible ... increasing numbers of fruit fly research studies. One fruit ... and another is scheduled launch to the station Sept. ... December. , Fruit flies are biomedical research models studied ... organisms can reveal the basis for health and disease ...
Breaking Biology News(10 mins):For legume plants, a new route from shoot to root 2Miranda: An icy moon deformed by tidal heating 2Miranda: An icy moon deformed by tidal heating 3Miranda: An icy moon deformed by tidal heating 4Miranda: An icy moon deformed by tidal heating 5Miranda: An icy moon deformed by tidal heating 6Miranda: An icy moon deformed by tidal heating 7Buzzing with activity: Fruit flies orbit Earth for science 2Buzzing with activity: Fruit flies orbit Earth for science 3Buzzing with activity: Fruit flies orbit Earth for science 4
... MIAMI March 10, 2011 -- Scientists from the University ... were part of a national research team to find two ... Horizon oil spill. In a study published in this week,s ... offers new insight into the mechanism by which the crude ...
... of California, San Francisco (UCSF) has developed a new ... but untreatable and incurable neurodegenerative disease. The disease, frontotemporal ... dementia before age 65, after Alzheimer,s disease. Based ... work explains in part why the brain deteriorates in ...
... New Orleans, LA LSU oncologist Vince D. ... article reporting two chemotherapy drugs now indicated for second ... cancer are remarkably effective in treating a certain subset ... of Medicine at LSU Health Sciences Center New Orleans ...
Cached Biology News:New study reveals aerosol plumes downwind of the Deepwater Horizon oil spill 2UCSF report describes new model for neurodegeneration 2UCSF report describes new model for neurodegeneration 3Study shows new treatment strategy effective for certain lung cancers 2
(Date:9/19/2014)... September 19, 2014 Barnhardt Manufacturing ... Label for its Organic Cotton . The USDA ... of renewable biobased ingredients meets or exceeds levels set ... composed in whole or in significant part of agricultural, ... allow our Organic cotton to be immediately identified as ...
(Date:9/19/2014)... Massachusetts , September 19, 2014 ... the 53rd European Society for Paediatric Endocrinology (ESPE) Meeting  ... of science and medical research in the field of ... Merck KGaA, Darmstadt, Germany , today ... Innovation (GGI) for 2014. The awards were announced during ...
(Date:9/18/2014)... 18, 2014 HealthTronics, Inc ... interventional radiology products and services, announced that a ... and cryoablation) versus external beam radiotherapy (EBRT) is ... American Urological Association (MAAUA) Annual Meeting in Baltimore, ... Effectiveness of Cryosurgery and External Beam Radiation as ...
(Date:9/18/2014)... 2014 A novel robotic system that ... is currently being tested as part of a biomedical ... Boston with the aim of determining if the robot, ... cancer biopsies faster, more accurate, less costly, and less ... the potential to deliver prostate cancer therapies with greater ...
Breaking Biology Technology:Barnhardt Manufacturing Company Earns USDA Certified Biobased Product Certification and Label for Organic Cotton 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 2EMD Serono Awards Grant for Growth Innovation (GGI) for the First Time 3HealthTronics Announces Data Comparing Cryotherapy Versus Radiation for Treating Prostate Cancer Poster Presented at the American Urological Association Regional Meeting 2Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 2Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 3Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 4Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 5Worcester Polytechnic Institute Participates in Clinical Trial for MRI-Compatible Robot Designed to Improve Accuracy of Prostate Cancer Biopsies 6
... Directors,of Eli Lilly and Company (NYSE: LLY ) ... December 1, 2008. Oberhelman, 55, currently serves as,a group ... Caterpillar,s,executive office. As a member of Lilly,s board, Oberhelman ... committee. He will stand for,election by Lilly shareholders at ...
... KANNAPOLIS, N.C., Oct. 20 Academia, science, industry,and ... at 10,AM at the Dedication and Open House ... the UNC Nutrition Research Building and the NC,State ... Nutrition,Research Building is home to NC A&T University, ...
... Recruitment, and Employment Branding joins Pierpoint International as Global VP of ... ... (PRWEB) October 20, 2008 -- Pierpoint International is pleased to announce ... and Diversity. Mr. Cantu, most recently served as AVP of Staffing ...
Cached Biology Technology:Douglas Oberhelman Elected to Lilly Board of Directors 2Douglas Oberhelman Elected to Lilly Board of Directors 3Campus Celebrates Historic Milestone 2Campus Celebrates Historic Milestone 3Campus Celebrates Historic Milestone 4Campus Celebrates Historic Milestone 5Robert Cantu Appointed Vice President of Pierpoint International 2
Peptide-affinity Purified Polyclonal Antibody to Olfactory Receptor, Family 2, Subfamily H, Member 3...
... collects data from balances and scales with RS232 ... other program. If you can type the weight ... collection process Simple to use parser extracts ... , Add user information , Collect data at ...
... collection and automation that is controlled from within ... , Pre-configured library of interfaces for balances, ... be added and configured by the user ... one spreadsheet , Allows for multi-tasking ...
...
Biology Products: