Index Catalog // ScholarsArchive@OSU

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:: of Environmental and Molecular Toxicology Dean of the GaIuaTe School I understand that my

Effects of esfenvalerate on native macroinvertebrates representative of Pacific Northwest streams

Creator:: Johnson, Katherine R.
Abstract:: Aquatic insects are essential components of healthy stream ecosystems, contributing to nutrient cycling, trophic dynamics and other ecological functions. Aquatic insect species, particularly those in the orders Ephemeroptera, Plecoptera and Trichoptera (EPT taxa) are however, extremely sensitive to insecticide contamination. Given that urban and agricultural use of synthetic pyrethroid insecticides...
Resource Type:: Dissertation
Full Text:: Head of the Department of Environmental and Molecular Toxicology Dean of the Graduate School

Exposure and health risk assessment for farmers occupationally exposed to chlorpyrifos in Sri Lanka and drinking water and house dust analysis for chlorpyrifos

Creator:: Aponso, G. Lalith M.
Abstract:: This study was designed to assess chiorpyrifos exposure of a group of farmers by determining internal dose associated with a given application of this insecticide. This involved the monitoring of urinary levels of 3,5,6 trichloro-2-pyridinol (TCP), the major metabolite of chlorpyrifos. Incidental exposure was evaluated by determining the levels of...
Resource Type:: Dissertation
Full Text:: on July 30, 2001 APPROVED Major Professor, representing Environmental and Molecular Toxicology

Chemical and environmental factors affecting pesticide volatilization from turfgrass

Creator:: Conway, Michael S.
Abstract:: Volatile loss rates of pesticides from turfgrass were measured using the Backward-Time Lagrangian Stochastic Dispersion model (Flesch et al., 1995). Solar radiation, ambient temperature, surface temperature, relative humidity, wind direction, and wind speed were monitored continuously. Growth regulator was applied to the turf plot several days before pesticide application to...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Toxicology presented on December 18, 2002. Title: CHEMICAL AND ENVIRONMENTAL

Unraveling tissue regeneration using chemical genetics

Creator:: Mathew, Lijoy K.
Abstract:: The emerging field of regenerative medicine is mainly approached by two different aspects. First is the use of stem cell based models to generate a suite of differentiated cells for therapeutic applications and the alternative approach is to utilize the non-mammalian models that have the inherent capacity to regenerate their...
Resource Type:: Dissertation
Full Text:: Department of Environmental and Molecular Toxicology Dean of the Graduate School

Long-term fertilizer input influences total and bioavailable metal in agricultural soils and crops

Creator:: Pérez, Angela L.
Abstract:: Protection of the quality and integrity of food supplies is of global concern. Crops can accumulate non-nutritive and sometimes toxic metals and metalloids. Accumulated metals/metalloids can come in part, from fertilizers, which may contain variable levels of non-nutritive metals or metalloids such as arsenic (As), cadmium (Cd), lead (Pb), nickel...
Resource Type:: Dissertation
Full Text:: Toxicology Head of the Department of Environmental and Molecular Toxicology

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:: 79to 201 J.Lg/g zinc, 0.174 to 8.66 pg/g lead, and 1.14 to 10.8 .tg/g cadmium. Copper was efficiently

Mercury distribution in sediments and uptake into an aquatic food web at Cottage Grove Reservoir, Oregon

Creator:: Morgans, Donna L.
Abstract:: The Cottage Grove Reservoir has been impacted by a point source (Black Butte Mine), where mercury mining and processing has occurred within its watershed from the 1890's to the late 1960's. Total mercury concentrations in surface sediments transect samples, core samples, tributary samples, and representative food web species were measured...
Resource Type:: Masters Thesis
Full Text:: , Representing Toxicolo Chairman of Environmental and MoTécu1ar Toxicology Program I understand that my thesis

Environmental estrogens and skeletal development disruption in the fathead minnow : A teleost model of vertebrate developmental toxicity

Creator:: Warner, Kara E.
Abstract:: Natural and synthetic estrogenic compounds detected in surface waters have been linked to endocrine signaling disruption in several species. Endogenous estrogen contributes to cartilage and bone deposition during development in vertebrates, and is susceptible to perturbation from xenoestrogens. The goals of this work were to develop a teleost model to...
Resource Type:: Dissertation

The use of native macroinverebrates to assess pesticide risk to Oregon streams

Creator:: Peterson, Jennifer L.
Resource Type:: Dissertation

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:: : ______________________________________________________ Kim A. Anderson There are many links between exposure to environmental pollution and risks to

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

Passive sampling devices as biological surrogates for evaluating seasonal bioavailability of hydrophobic organic contaminants in surface water

Creator:: Sethajintanin, Doolalai
Abstract:: The seasonal distribution of bioavailable organochiorine contaminants in surface water and the potential environmental factors influencing their bioavailability were evaluated. The study was carried at the lower Willamette River at Portland Harbor, Oregon where surface water runoff varied according to season. Bioavailable water concentrations of DDTs and PCBs were determined...
Resource Type:: Dissertation
Full Text:: organochiorine contaminants in surface water and the potential environmental factors influencing their

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:: Toxicology presented on May 25, 2006. Title: Environmental Contaminants in Male River Otters Collected

Assessing Chemical Dispersants Used During the Deepwater Horizon Oil Spill : Method Innovation and Application

Creator:: Perkins, Matt J.
Abstract:: Large quantities of the chemical oil dispersant Corexit were applied in the Gulf of Mexico (Gulf) in response to the Deepwater Horizon oil spill. Large data gaps regarding the potential transport, persistence and impact of Corexit in the Gulf existed at the time of the emergency response. Analytical methods for...
Resource Type:: Dissertation
Full Text:: the support of environmental monitoring and laboratory experiments. The work presented in this

From pesticide degradation products to legacy toxicants and emerging contaminants : novel analytical methods, approaches, and modeling

Creator:: Forsberg, Norman D.
Abstract:: Environmental toxicologists and public health officials are responsible for assisting in the identification, management, and mitigation of public health hazards. As a result, there is a continued need for robust analytical tools that can aid in the rapid quantification and characterization of chemical exposure. In the first research phase, we...
Resource Type:: Dissertation
Full Text:: : . Kim A. Anderson Environmental toxicologists and public health officials are responsible for

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:: phototoxic risk in ambient environmental conditions four years after the Deepwater Horizon oil spill. Water

Selenium and trace metal accumulation in detrital-benthic food webs of lotic and lentic wetlands, Utah, USA

Creator:: Hillwalker, Wendy E.
Abstract:: Concentrations of selenium (Se), manganese (Mn), zinc (Zn), cadmium (Cd), lead (Pb) and arsenic (As) were measured in the water column, sediment and biota, in conjunction with selected physicochemical data, from representative wetland types at a mining site within Salt Lake County, Utah, USA. The selected field sites included Oolitic...
Resource Type:: Dissertation
Full Text:: selenium (Se), manganese (Mn), zinc (Zn), cadmium (Cd), lead (Pb) and arsenic (As) were measured in the

ScholarsArchive@OSU

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

Effects of esfenvalerate on native macroinvertebrates representative of Pacific Northwest streams

Exposure and health risk assessment for farmers occupationally exposed to chlorpyrifos in Sri Lanka and drinking water and house dust analysis for chlorpyrifos

Chemical and environmental factors affecting pesticide volatilization from turfgrass

Unraveling tissue regeneration using chemical genetics

Long-term fertilizer input influences total and bioavailable metal in agricultural soils and crops

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

Mercury distribution in sediments and uptake into an aquatic food web at Cottage Grove Reservoir, Oregon

Environmental estrogens and skeletal development disruption in the fathead minnow : A teleost model of vertebrate developmental toxicity

The use of native macroinverebrates to assess pesticide risk to Oregon streams

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

Passive sampling devices as biological surrogates for evaluating seasonal bioavailability of hydrophobic organic contaminants in surface water

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

Assessing Chemical Dispersants Used During the Deepwater Horizon Oil Spill : Method Innovation and Application

From pesticide degradation products to legacy toxicants and emerging contaminants : novel analytical methods, approaches, and modeling

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

Selenium and trace metal accumulation in detrital-benthic food webs of lotic and lentic wetlands, Utah, USA

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