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:: December 19. 2001 Major Profesor, representing Toxicology bf Department of Environmental and Molecular

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

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

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