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Environmental Microbiology and Microbial Ecology Commons™
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- Altered Head Morphometrics (1)
- Ampicillin (1)
- Antibiotic resistance (1)
- Aquatic Sentinel Species (1)
- CAFOs (1)
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- Cattle Feedlot Effluent (1)
- Ciprofloxacin (1)
- Coliform (1)
- Concentrated Animal Feeding Operations (1)
- Decreased Estrogen:Androgen Ratio (1)
- EPA (1)
- Endocrine-Disrupting Action (1)
- Environmental Pollutants (1)
- Erythromycin (1)
- Fathead Minnow (1)
- Gonadotropins (1)
- Hormones (1)
- In Vitro Gene Activation Assay (1)
- In Vitro Steroid Hormone Synthesis (1)
- Lower Testicular Testosterone Synthesis (1)
- Penicillin (1)
- Pharmaceuticals (1)
- Reproductive Biology (1)
- Sewage Treatment Plant Effluent (1)
- Surfactants (1)
- Tetracycline (1)
- Wastewater (1)
Articles 1 - 2 of 2
Full-Text Articles in Environmental Microbiology and Microbial Ecology
A Survey Of Antibiotic Resistance Among Coliform Bacteria Isolated From The Missouri River, Sara E. Mcdonnell, Amy M. Treonis
A Survey Of Antibiotic Resistance Among Coliform Bacteria Isolated From The Missouri River, Sara E. Mcdonnell, Amy M. Treonis
Biology Faculty Publications
The prevalence of antibiotic resistant microorganisms in the environment is not well known but could represent a challenge to maintaining public health in the future. Fecal waste from livestock facilities, where antibiotics are routinely used, is recognized as a significant source of pollution to surface waters in the United States. We collected water from the Missouri River across a winter to spring seasonal change in order to survey the density of coliform bacteria. We tested bacterial isolates for resistance to penicillin, tetracycline, ampicillin, erythromycin, and ciprofloxacin. Coliform density in Missouri River water generally was high throughout the study (0-405 cfu …
Endocrine-Disrupting Effects Of Cattle Feedlot Effluent On An Aquatic Sentinel Species, The Fathead Minnow, Edward Orlando, Alan Kolok, Gerry Binzcick, Jennifer Gates, Megan Horton, Christy Lambright, L. Earl Gray Jr., Ana M. Soto, Louis J. Guilette
Endocrine-Disrupting Effects Of Cattle Feedlot Effluent On An Aquatic Sentinel Species, The Fathead Minnow, Edward Orlando, Alan Kolok, Gerry Binzcick, Jennifer Gates, Megan Horton, Christy Lambright, L. Earl Gray Jr., Ana M. Soto, Louis J. Guilette
Biology Faculty Publications
Over the last decade, research has examined the endocrine-disrupting action of various environmental pollutants, including hormones, pharmaceuticals, and surfactants, in sewage treatment plant effluent. Responding to the growth of concentrated animal feeding operations (CAFOs) and the pollutants present in their wastewater (e.g., nutrients, pharmaceuticals, and hormones), the U.S. Environmental Protection Agency developed a new rule that tightens the regulation of CAFOs. In this study, we collected wild fathead minnows (Pimephales promelas) exposed to feedlot effluent (FLE) and observed significant alterations in their reproductive biology. Male fish were demasculinized (having lower testicular testosterone synthesis, altered head morphometrics, and smaller …