Index Catalog // ScholarsArchive@OSU

Accumulation and effects of 4-nonylphenol in chinook salmon fry and their estuarine amphipod prey

Creator:: Hecht, Scott A.
Abstract:: 4-nonylphenol (NP), a surfactant degradation product, is an unregulated, ubiquitous aquatic contaminant and endocrine disruptor, for which aquatic life criteria are currently under development by U.S. EPA. The effects of NP on estuarine amphipods and chinook salmon fry were investigated, and this dissertation reports research into the impacts of NP...
Resource Type:: Dissertation
Full Text:: harvesting, habitat degradation, and pollution of water and sediments (Kareiva et al. 2000). As sediments

Bioaccumulation profiles of chemical contaminants in fish from the lower Willamette River, Portland Harbor superfund site and human health risk assessment

Creator:: Sethajintanin, Doolalai
Abstract:: Concentrations of twenty-five PCBs, fifteen organochiorine pesticides and mercury were determined in recreational fish from the Willamette River, Oregon during the summer of 2000. Thirty-six fish samples of three fish species including black crappie, smalimouth bass and con-rn-ion carp were analyzed. The data reported here provides new information and recent...
Resource Type:: Masters Thesis
Full Text:: examine difference in means of lipid-effect, site-effect and species-effect on analyte concentrations

Dieldrin pretreatment does not induce hepatic microsomal and cytosolic epoxide hydrolase activities in rainbow trout (Oncorhyncus mykiss)

Creator:: Rosemond, Marie Victoire M.
Abstract:: Previous studies have shown that rainbow trout exposed to dieldrin via diet for 9 to 12 weeks increased biliary excretion of a subsequent dose of [¹⁴C]dieldrin by 500%. This was not explained by induction of the cytochrome P-450 (CYP) system involved in oxidative metabolism of these compounds. We hypothesized that...
Resource Type:: Masters Thesis
Full Text:: . Effect of pH on cEH activity using TSO as substrate for cytosol ..................21 3.3. Effect of pH

Dieldrin stimulates biliary excretion of [14 C] benzo[a]pyrene polar metabolites but does not change the metabolite profile in rainbow trout (Oncorhyncus mykiss)

Creator:: Barnhill, Melanie L.
Abstract:: Feeding rainbow trout 0.3-0.4 mg dieldrinlkg/d for 9-12 weeks stimulated the biliary excretion of a subsequent dose of [¹⁴C]dieldrin by 500% and [³H]7,12- dimethylbenz[a]anthracene (DMBA) by 240%. In vitro work demonstrated that this interaction occurred without induction of the cytochrome P450 system, or other hepatocellular proteins involved in metabolism. The...
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Toxicology presented on March 25, 2002. Title: Dieldrin Stimulates Biliary

Biochemical and physiological indicators of behavioral impairment in salmonids exposed to chlorpyrifos and copper

Creator:: Sandahl, Jason
Abstract:: The purpose of this work was to determine if environmentally-relevant concentrations of chlorpyrifos and copper, two commonly detected chemicals in Western surface waters, can negatively impact the biological health of salmonids. Both compounds are highly neurotoxic to fish, but each with distinct biological target sites and mechanisms of action. We...
Resource Type:: Dissertation
Full Text:: , channelization, sedimentation, removal of riparian cover), water pollution is a major unknown and possible

Photo-enhanced Toxicity of Oil Constituents and Corexit 9500 to Gulf of Mexico Marine Organisms

Creator:: Finch, Bryson E.
Abstract:: Significant inputs of hydrocarbons are continually released into the environment from anthropogenic and natural sources. Some of the most toxic hydrocarbon compounds are polycyclic aromatic hydrocarbons. Polycyclic aromatic hydrocarbons are known for their ability to absorb ultraviolet light and enhance toxicity. Generally, PAHs exert their toxicity via narcosis but UV-absorbing...
Resource Type:: Dissertation
Full Text:: and exposure duration on phototoxicity, 3) determine the effect of alkylation on the phototoxic

Physiological and organism level endpoints in the beetle pterostichus oblongopunctatus (Coleoptera: Carabidae), inhabiting a gradient of heavy metal pollution

Creator:: Stone, David
Abstract:: Pollutant body burdens, ability to tolerate supplementary stressors, and biomarkers of physiological stress were investigated in the ground beetle, Pterostichus oblongopunctatus (Coleoptera: Carabidae), inhabiting a gradient of heavy metal contamination in Poland. The central question was to determine if beetles inhabiting polluted habitats incurred costs compared with beetles in less...
Resource Type:: Dissertation
Full Text:: different levels of cadmium (Cd) pollution on intrinsic rate of population increase (X; LTRE) and

Respiratory strategies and associated exchange epithelia as determinants on contaminant uptake in aquatic insects

Creator:: Buchwalter, David B.
Abstract:: Aquatic insects are used extensively to evaluate water quality. Despite their widespread use as indicator organisms, relatively little is known about the organismal characteristics that determine sensitivity differences to individual and multiple stressors. Insects have evolved several respiratory strategies that range from breathing atmospheric air to utilizing dissolved oxygen in...
Resource Type:: Dissertation
Full Text:: ....................................... 19 Effects of temperature shifts and acclimation on water influx............. 21 4. 14C-Inuiin

Human Exposure to PAHs in Air, Water, and Crayfish

Creator:: Paulik, L. Blair
Abstract:: There are many links between exposure to environmental pollution and risks to human health. While advances in the fields of toxicology, exposure science, and environmental chemistry have shown light on many of these links, many more research challenges remain. One major challenge is how to accurately characterize the toxicity of...
Resource Type:: Dissertation
Full Text:: Paulik for the degree of Doctor of Philosophy in Toxicology presented on August 8, 2016. Title: Human

Environmental contaminants in male river otters collected from Oregon and Washington, 1994-99, with reproductive organ hypoplasia observed in otter males

Creator:: Grove, Robert Allan
Abstract:: A large number of river otter (Lontra canadensis) males were collected from areas of high and low contaminant concentrations throughout western Oregon and Washington during the fall and winter of 1994-99. Few significant non-reproductive organ morphometric differences were found in the large series of male otters collected, except for adrenal...
Resource Type:: Dissertation
Full Text:: degree of Doctor of Philosophy in Toxicology presented on May 25, 2006. Title: Environmental Contaminants

ScholarsArchive@OSU

Accumulation and effects of 4-nonylphenol in chinook salmon fry and their estuarine amphipod prey

Bioaccumulation profiles of chemical contaminants in fish from the lower Willamette River, Portland Harbor superfund site and human health risk assessment

Dieldrin pretreatment does not induce hepatic microsomal and cytosolic epoxide hydrolase activities in rainbow trout (Oncorhyncus mykiss)

Dieldrin stimulates biliary excretion of [14 C] benzo[a]pyrene polar metabolites but does not change the metabolite profile in rainbow trout (Oncorhyncus mykiss)

Biochemical and physiological indicators of behavioral impairment in salmonids exposed to chlorpyrifos and copper

Photo-enhanced Toxicity of Oil Constituents and Corexit 9500 to Gulf of Mexico Marine Organisms

Physiological and organism level endpoints in the beetle pterostichus oblongopunctatus (Coleoptera: Carabidae), inhabiting a gradient of heavy metal pollution

Respiratory strategies and associated exchange epithelia as determinants on contaminant uptake in aquatic insects

Human Exposure to PAHs in Air, Water, and Crayfish

Environmental contaminants in male river otters collected from Oregon and Washington, 1994-99, with reproductive organ hypoplasia observed in otter males

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