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Pharmacology, Toxicology and Environmental Health Commons™
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Full-Text Articles in Pharmacology, Toxicology and Environmental Health
Effects Of Polychlorinated Biphenyl Exposure On Development And Sexual Differentiation In Ranid Tadpoles, Mary J. Rybitski
Effects Of Polychlorinated Biphenyl Exposure On Development And Sexual Differentiation In Ranid Tadpoles, Mary J. Rybitski
Dissertations, Theses, and Masters Projects
The effects of AroclorRTM1242 exposure on developing amphibians were examined by exposing southern leopard frogs, Rana sphenocephala, to a contaminated diet throughout the larval period. Treatment groups consisted of an untreated control, a solvent control, 17beta-estradiol, and three PCB doses (10, 100, and 1000 mug/g). PCB accumulation and biotransformation were examined. Effects of PCB exposure on metamorphosis and sexual differentiation were assessed. PCB accumulation was not statistically different between the egg masses. Levels of PCBs in the tissues differed in a dose related manner. Within treatments, body weight appeared to be the major factor correlated with PCB concentration. Congener patterns …
Ambient Toxicity Of Water Samples From Four Locations In The Elizabeth River : A Comparison Of Species Sensitivities, Morris H. Roberts, Peter F. De Lisle
Ambient Toxicity Of Water Samples From Four Locations In The Elizabeth River : A Comparison Of Species Sensitivities, Morris H. Roberts, Peter F. De Lisle
Reports
In the present study, the objective was to evaluate four species for relative sensitivity when challenged with ambient water from four locations in the Elizabeth River, ranging from locations considered to be free of toxicity to an area known to have copper concentrations that exceeded water quality standards in past sampling.