Navigation Links
Gender-bending fish problem in Colorado creek mitigated by treatment plant upgrade
Date:6/21/2010

rmally produced by females.

Contaminants identified in Boulder Creek included ethinylestradiol -- a chemical used in most contraceptives -- as well as other reproductive steroids produced naturally by humans. Estrogen-related chemicals found in the water included bisphenyl A and phthalates associated with plastic, nonylphenols associated with detergents, and pesticides. Most of the compounds came from products flushed down toilets and drains, according to Norris.

In the new study following the treatment plant upgrade, the team studied adult male fathead minnows in 100 percent effluent water, those in a mixture of half effluent and half upstream water, and those in tanks containing all upstream water. Norris and his team saw no effects on male sex characteristics of the minnows in the tank containing 100 percent effluent water directly from the treatment plant until 28 days after exposure.

As part of the study, Norris and his colleagues also analyzed reproductive organs from preserved fish specimens from CU's Museum of Natural History that had been collected from Boulder Creek between 50 and 100 years ago. The researchers and found no evidence of feminized or intersex fish in the museum specimens, he said.

The CU research team also tested brown trout populations below a wastewater treatment in Vail, Colo., said Norris. The trout showed no increases in vitellogenin.

In addition to chemicals that trigger fish feminization, biologists are finding increased concentrations of fluoxetine, a common antidepressant taken by millions of Americans, in waterways across the nation, said Norris. Fluoxetine has been shown to enter the brains of fish and affect fish behavior, said Norris.

Between 2000 and 2002, Norris and his group were among the first in the nation to document the problem of intersex fish following their stream surveys of Boulder Creek, the South Platte River near Denver and Fountain Creek near Colorado
'/>"/>

Contact: David Norris
David.Norris@colorado.edu
303-492-8379
University of Colorado at Boulder
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Abnormal fat metabolism underlies heart problems in diabetic patients
2. Study finds blocking angiogenesis signaling from inside cell may lead to serious health problems
3. Prolonged respiratory problems for oil spill clean-up volunteers
4. Reversing cognitive deficits: Injectable antibody may attack source of problem
5. New thoracic imaging approach can pinpoint underlying venous problems
6. UC-Riverside partners with Chinese university to address Chinas environmental problems
7. Computer solution to delivery problem
8. Closeness is not a problem: New ways to handle spatial dependencies in species distributions
9. Columbia researchers: Growth of CT scan use may lead to significant public health problem
10. Physician-scientists seek solutions to reproductive problems related to chromosomal variations
11. JILA solves problem of quantum dot blinking
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Gender-bending fish problem in Colorado creek mitigated by treatment plant upgrade
(Date:4/17/2015)... 17, 2015 Increasing ... technological advancement to drive biometric systems market in ...   According to a recently released ... &  Opportunities, 2020 ", biometric systems market in ... growth at CAGR of over 22% through 2020. ...
(Date:4/14/2015)... April 14, 2015 NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market, announces ... the 2015 New York Design Awards under the category  ... York City Design Awards are part of a global ... 2,500 ratings from the marketplace, industry and judging panel. ...
(Date:4/13/2015)... 2015  higi, a leading cloud-based consumer engagement platform ... engage with their communities around health and wellness, announced ... secure API.  ... affordable, and convenient vehicle to receive validated health information ... The API will allow higi,s trusted partners, on ...
Breaking Biology News(10 mins):Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 2Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 3NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 2NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 3higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 2higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 3
... University scientists are working to determine how neurons are ... disorders like Tuberous Sclerosis Complex (TSC). TSC is ... tumors in the brain and other vital organs and ... impairment that may arise from the abnormal generation of ...
... who invest in their own solar panels for the roof ... the long term but how long will this technology ... up to 25 years to their customers, the manufacturers themselves ... modules must fulfill certain standards, of course, to be approved ...
... fundamental processes in the life of plants because they have ... Leeds researchers. Arabidopsis thaliana also known as thale ... over Europe and Asia, but the small white flower leads ... world. It has become the dominant "model plant" in ...
Cached Biology News:Clemson University study points to possible treatment for brain disorders 2Predicting the life expectancy of solar modules 2Predicting the life expectancy of solar modules 3Model plant misled scientists about multicellular growth 2Model plant misled scientists about multicellular growth 3
(Date:4/27/2015)... DIEGO , April 27, 2015  Edico ... biochemists and geneticists from Harvard and Stanford Universities ... a whole genome sequence with 300x depth of ... hours compared to 60 hours with standard software. ... remains a challenge, especially for individual research and ...
(Date:4/27/2015)... LONDON , April 27, 2015 ... about this release, please scroll to bottom . ... following equities: Lexicon Pharmaceuticals Inc. (NASDAQ: LXRX ... Synta Pharmaceuticals Corporation (NASDAQ: SNTA ), Spectrum ... Inc. (NASDAQ: MDVN ). Free research report ...
(Date:4/27/2015)... -- Haemonetics Corporation (NYSE: HAE ) today reported ... $226.5 million, down 6%.  Excluding currency impact, revenue ... reported a fourth quarter GAAP net loss of ... income, exclusive of transformation, restructuring and deal amortization ... and adjusted earnings per share were $0.47, up ...
(Date:4/27/2015)... 2015  MT Services LLC, a Lawsuit Settlement ... that U.S. District Judge Joseph Goodwin ... status meeting in hopes to resolve more than ... manufacturers who are involved in multidistrict litigations under ... going on for some time, and Judge Goodwin ...
Breaking Biology Technology:Edico Genome, in Collaboration with Researchers from Harvard and Stanford Universities, Speeds Analysis of Whole Genome Sequence with 300x Depth of Coverage Tenfold 2Edico Genome, in Collaboration with Researchers from Harvard and Stanford Universities, Speeds Analysis of Whole Genome Sequence with 300x Depth of Coverage Tenfold 3Market Updates on Biotech Stocks -- Lexicon Pharma, Idera Pharma, Synta Pharma, Spectrum Pharma, and Medivation 2Market Updates on Biotech Stocks -- Lexicon Pharma, Idera Pharma, Synta Pharma, Spectrum Pharma, and Medivation 3Market Updates on Biotech Stocks -- Lexicon Pharma, Idera Pharma, Synta Pharma, Spectrum Pharma, and Medivation 4Market Updates on Biotech Stocks -- Lexicon Pharma, Idera Pharma, Synta Pharma, Spectrum Pharma, and Medivation 5Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 2Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 3Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 4Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 5Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 6Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 7Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 8Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 9Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 10Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 11Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 12Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 13Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 14Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 15Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 16Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 17Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 18Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 19Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 20Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 21Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 22Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 23Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 24Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 25Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 26Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 27Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 28Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 29Haemonetics Reports 4th Quarter Fiscal 2015 Revenue of $226 Million and Adjusted EPS of $0.47; Full Year Revenue of $910 Million and Adjusted EPS of $1.85; Provides Fiscal 2016 Guidance 30
... 2012 Alchem International Ltd. opens its ... marketing office will be spearheaded by Laurent Leduc, former ... cater to the rapidly growing demand in North America ... for the supplement, pharmaceutical and cosmetic industries. ...
... NEW YORK, Feb. 1, 2012   Reportlinker.com ... is available in its catalogue: ... and Companies http://www.reportlinker.com/p0203537/Cell-Therapy---Technologies-Markets-and-Companies.html#utm_source=prnewswire&utm_medium=pr&utm_campaign=Biological_Therapy ... cell therapy technologies and methods, which have ...
... able to hear the imagined speech of a patient unable ... of California, Berkeley, researchers. These scientists have succeeded ... the seat of the auditory system as a person ... and brain activity, they then were able to predict the ...
Cached Biology Technology:Alchem International Opens Sales and Marketing Office in the U.S. 2Cell Therapy - Technologies, Markets and Companies 2Cell Therapy - Technologies, Markets and Companies 3Cell Therapy - Technologies, Markets and Companies 4Cell Therapy - Technologies, Markets and Companies 5Cell Therapy - Technologies, Markets and Companies 6Cell Therapy - Technologies, Markets and Companies 7Cell Therapy - Technologies, Markets and Companies 8Cell Therapy - Technologies, Markets and Companies 9Cell Therapy - Technologies, Markets and Companies 10Cell Therapy - Technologies, Markets and Companies 11Cell Therapy - Technologies, Markets and Companies 12Cell Therapy - Technologies, Markets and Companies 13Cell Therapy - Technologies, Markets and Companies 14Cell Therapy - Technologies, Markets and Companies 15Cell Therapy - Technologies, Markets and Companies 16Scientists decode brain waves to eavesdrop on what we hear 2Scientists decode brain waves to eavesdrop on what we hear 3
Chicken polyclonal to ADI1 ( Abpromise for all tested applications). Antigen: Full length native protein (purified), corresponding to amino acids 1-179 of Human ADI1. Entrez GeneID: 55256 ...
anti-JNK2 Immunogen: Recombinant human JNK2 protein Accession Number: NM_002752 Quality Assurance: Routinely evaluated by immunoblot. Molecular Weight: 46 and/or 54 kDa Available ...
Gloves are 9.25 long, latex, powder free, smooth and ambidextrous....
Request Info...
Biology Products: