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

ther had only 30 ppb. Dieldrin concentrations ranged from 14.4 to 534 ppb.

Since the otters were collected from counties all over Central Illinois, the findings could indicate that some watersheds have a worse contamination problem than others, Carpenter said.

"For many of the contaminants we did detect a large range," she said. "This is a red flag. We need to understand more about what humans and wildlife are being exposed to in different watersheds."

More research is needed to understand the factors that contribute to the river otters' exposure to these chemicals, Mateus-Pinilla said.

"We don't have a good understanding of how much time they spend in a particular area, how long they stay there, how far they go or where they spend most of their time during the winter versus the summer," she said. "All of these can contribute to differences in exposure."

The researchers do not know why the male otters in the study carried a heavier burden of PCBs than the females, Carpenter said. It may be simply that the males are larger. They may range further than the females, picking up more toxins as they go. Or the females might transfer some of the contaminants to their offspring during nursing, as previous research suggests.

"Maternal transfer is particularly interesting," Novakofski said. "In some watersheds humans may have the same kind of risk because they're eating the same kinds of fish that the otters might be."

Studies have shown that PCBs and dieldrin can be transferred through breast milk, he said.

"We don't know enough about how these contaminants behave synergistically," Carpenter said, especially since "the cocktail of contaminants that we're exposed to here in the Midwest differs from what humans and wildlife are exposed to in eastern or western North America."


'/>"/>

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:8/1/2014)... elements are a key component of phloem, the conductive ... range of signalling molecules. Elongated cylindrical cells are capped ... end-to-end to form sieve tubes which in turn form ... "Sieve elements are very special cells which play an ... little has been known about their differentiation," says Professor ...
(Date:8/1/2014)... a more effective way to control the condition, thanks ... National University of Singapore (NUS). , The team, led ... Pharmacology at the NUS Yong Loo Lin School of ... PhD graduate from the Saw Swee Hock School of ... herbal-based anti-malarial drug, can be used to control asthma, ...
(Date:7/31/2014)... found to be a key gene responsible for hearing in ... cells of the inner ear that contracts and expands rapidly ... phonograph horn, amplify sound waves to make hearing more sensitivity. ... advanced online edition of Molecular Biology and Evolution , ... independently evolved to play a critical role in the ultrasonic ...
Breaking Biology News(10 mins):Developmental regulation of important plant phloem components discovered 2NUS study shows effectiveness of common anti-malarial drug in controlling asthma 2
... , A new fungal species, called , Hebelomagriseopruinatum , ... species. The fungus, whose name can be translated into ... Denmark during a mushroom-hunting tour headed by postdoc Jacob ... mushroom-hunting excursion in 2009, postdoc Jacob Heilman-Clausen from the ...
... 2012) -- In the face of mounting evidence that ... decision-making, biophysicists and cancer researchers at Rice University, Tel ... new strategy for outsmarting cancer through its own social ... that cancer is a random collection of cells running ...
... the United States and Sweden have discovered a new control ... the treatment of diabetes and other metabolic diseases. A-kinase anchoring ... of kinases within the cell, crucial enzymes that control important ... the blood. In a new study published in The ...
Cached Biology News:New Danish fungal species discovered 2Experts propose 'cyber war' on cancer 2Experts propose 'cyber war' on cancer 3Anchoring proteins influence glucose metabolism and insulin release 2
(Date:7/31/2014)... the British mathematician (1912-1954), is famous for a number ... century. In 1936 he published a paper, which laid ... concept of a computer algorithm. He next played a ... machines which cracked the German military codes, enabling the ... And in the late 1940,s he turned his attention ...
(Date:7/31/2014)... 31, 2014 According to a ... Dots Market - Global Industry Analysis, Size, Share, Growth, ... valued at USD 88.5 million in 2011, which is ... at a CAGR of 53.8% from 2013 to 2023. ... at  http://www.transparencymarketresearch.com/quantum-dots.html Increasing demand for energy ...
(Date:7/31/2014)... DUBLIN , July 31, 2014 ... the "Global Genomics Market 2014-2018" report to ... Genomics is the study of the genetic ... to be a strong basis for the discovery and ... of human diseases or health conditions. Genomics is supported ...
(Date:7/31/2014)... (PRWEB) July 31, 2014 Held at ... patients with an overview of the disease and its ... drug side effects, as well as updates on the ... to Dr. Sandy Srinivas for organizing this educational opportunity,” ... kidney cancer. “Sandy and her colleagues have put together ...
Breaking Biology Technology:A mathematical theory proposed by Alan Turing in 1952 can explain the formation of fingers 2A mathematical theory proposed by Alan Turing in 1952 can explain the formation of fingers 3Global Quantum Dots Market is Expected to Reach USD 8,246.8 Million in 2023: Transparency Market Research 2Global Quantum Dots Market is Expected to Reach USD 8,246.8 Million in 2023: Transparency Market Research 3Global Quantum Dots Market is Expected to Reach USD 8,246.8 Million in 2023: Transparency Market Research 4Global Genomics Market 2014-2018: Key Vendors are F. Hoffmann-La Roche, Life Technologies, Qiagen and Illumina 2
... Madison, Wis. The Greater ... a web site linking local small ... business formation tips, government agencies, and ... the site to connect visitors with ...
... the fledgling Biomedical Technology Alliance (BTA) took a major ... Wisconsin Dept. of Commerce and another $500,000 in matching ... that showed the promise for formalizing pathways for collaboration ... example of the kind of cross-institutional partnerships that are ...
... Wisconsin Technology Network edition, we interviewed Barry Chaiken, chair of ... chief medical officer of BearingPoint. , , WTN: If ... about my information technology resources now? , , ... value from the money that I'm spending? Value is on ...
Cached Biology Technology:Alliance looks to create the right chemistry in SE Wisconsin 2Alliance looks to create the right chemistry in SE Wisconsin 3Interview: Dr. Barry Chaiken on healthcare IT 2Interview: Dr. Barry Chaiken on healthcare IT 3