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Agricultural Contributions of Antimicrobials and Hormones on Soil and Water Quality
Detection of many emerging chemicals of concern, including antimicrobials and steroid hormones, in the environment has increased in the past decade with the advancement of analytical techniques.Expand
The effects of silver nanoparticles on fathead minnow (Pimephales promelas) embryos
It is concluded that both dissolved and particulate forms of Ag elicited toxicity to fish embryos, and increased toxicity after sonication cannot be solely explained by dissolved Ag. Expand
A review of studies on androgen and estrogen exposure in fish early life stages: effects on gene and hormonal control of sexual differentiation
This review will focus on sex differentiation in teleost fishes and how these processes in fish early life stages may be impacted by environmental hormones which are known to contaminate aquatic environments. Expand
Multiple origins of pyrethroid insecticide resistance across the species complex of a nontarget aquatic crustacean, Hyalella azteca
This study indicates that runoff of terrestially applied urban and agricultural pesticides has been sufficient to induce resistance in a nontarget aquatic species on multiple, independent occasions and has far-reaching implications for biomonitoring programs in general and especially those relying on H. azteca. Expand
Mercury in feathers from Chilean birds: influence of location, feeding strategy, and taxonomic affiliation.
This study reports baseline concentrations of mercury (Hg) in feathers from different species of birds sampled at various locations off the Chilean coast (Southeastern Pacific). Hg concentrationsExpand
Effects of clothianidin on aquatic communities: Evaluating the impacts of lethal and sublethal exposure to neonicotinoids
Low soil binding and high water solubility of neonicotinoid insecticides puts aquatic environments at high risk for contamination via runoff events, and high invertebrate predator mortality with increases in clothianidin concentration can result in a top-down trophic cascade in a community dominated by invertebrates. Expand
Toxicological studies on silver nanoparticles: challenges and opportunities in assessment, monitoring and imaging.
Several proposed mechanisms of cytotoxicity based on recent research on the transport, activity and fate of Ag NPs at the cellular and organismic level are discussed, in conjunction with traditional and recently established methods of nanoparticle characterization. Expand
Effects of pulp and paper mill effluents on reproductive success of largemouth bass.
Fecundity, egg size, and hatchability did not differ across treatments, but an increase in the frequency of fry abnormalities and a decrease in fry weights was observed at effluent exposures of 40% and higher. Expand
An evaluation of biomarkers of reproductive function and potential contaminant effects in Florida largemouth bass ( Micropterus salmoidesfloridanus) sampled from the St. Johns River.
Results indicate a geographical trend in reproductive effects, with changes being most pronounced at the site closest to the paper mill (Palatka) and decreasing as the St. Johns River flows downstream. Expand
Acute and chronic toxicity of atrazine and its metabolites deethylatrazine and deisopropylatrazine on aquatic organisms
The results suggest that short-term exposures of these chemicals to algae and amphipods to concentrations routinely detected in surface waters are unlikely to be a cause of concern, but the unexpected high sensitivity of Diporeia spp. Expand