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Articles 1 - 11 of 11
Full-Text Articles in Medicine and Health Sciences
A Study Of The Eastern Oyster, Crassostrea Virginica: (1) Dermo Tolerance, Survival, Growth, Condition And Hsp70 Expression In Different Geographic Stocks; (2) Heat Tolerance And Effects Of Sublethal Heat Shock On Survival And Hsp70 Expression Of Infected And Uninfected Oysters, Vincent G. Encomio
Dissertations, Theses, and Masters Projects
The diseases Dermo and MSX have devastated Chesapeake Bay populations of the eastern oyster, Crassostrea virginica. The protozoan Perkinsus marinus, which causes Dermo, is particularly problematic since it persists over a wide range of salinities and temperatures. An objective of this dissertation was to determine whether specific wild oyster stocks had developed natural resistance to Dermo and if several parameters (survival, growth, condition and energy reserves) were associated with resistance. Another objective was to characterize heat shock protein (hsp70) expression in the eastern oyster. Heat shock proteins such as hsp70 protect organisms from thermal stress and other stressors, and this …
Pathobiology Of Mycobacteria In Striped Bass (Morone Saxatilis), David T. Gauthier
Pathobiology Of Mycobacteria In Striped Bass (Morone Saxatilis), David T. Gauthier
Dissertations, Theses, and Masters Projects
Striped bass (Morone saxatilis) in Chesapeake Bay, USA, are experiencing an epizootic of mycobacteriosis. This disease, caused by bacteria in the genus Mycobacterium, causes granulomatous lesions of the skin and viscera. Diseased fish are often emaciated, and fish with skin lesions may be significantly disfigured. The overall goal of this work was to examine aspects of the pathobiology of mycobacteria in striped bass via laboratory exposure studies and cellular assays. Striped bass were injected intraperitoneally with a sublethal dose of Mycobacterium marinum, M. shottsii, or M. gordonae and sampled for histology and bacteriology at regular intervals to 45 weeks post-injection …
Natural Neuronal Variation In A Complex Neuroendocrine Pathway: Effect Of Selection For Photoperiod Responsiveness On The Density And Location Of Mature Gnrh-Releasing Neurons In Inhibitory And Excitatory Photoperiods, Mauricio Avigdor
Dissertations, Theses, and Masters Projects
No abstract provided.
A Paradigm Shift In Progress: The Impact Of Work Hour Reform On The Operative Volume Of Surgical Residents, Kathryn A. Mendoza
A Paradigm Shift In Progress: The Impact Of Work Hour Reform On The Operative Volume Of Surgical Residents, Kathryn A. Mendoza
Dissertations, Theses, and Masters Projects
No abstract provided.
Natural Dermo Resistance And Related Defense Mechanisms In Eastern Oysters, Crassostrea Virginica, With Implications For Restoration, Shawn Michael Stickler
Natural Dermo Resistance And Related Defense Mechanisms In Eastern Oysters, Crassostrea Virginica, With Implications For Restoration, Shawn Michael Stickler
Dissertations, Theses, and Masters Projects
American oyster (Crassostrea virginica) stocks on the East Coast in general, and in Chesapeake Bay in particular, have been in decline over the past half-century in large part due to Dermo disease, caused by the protist parasite Perkinsus marinus. Efforts to restore oysters for their ecological and economic value have centered on the development and use of hatchery-based seed selectively bred for disease resistance. Selective breeding could benefit from the incorporation of oysters from wild stocks that have developed "natural Dermo resistance", but few such stocks have been identified and verified. This dissertation describes reciprocal common-garden experiments carried out at …
Dual Energy Scanning Beam X -Radiography, Randolph Frank Wojcik
Dual Energy Scanning Beam X -Radiography, Randolph Frank Wojcik
Dissertations, Theses, and Masters Projects
Dual energy X-radiography is a method first developed in the mid-1970's by which one uses the information contained in the energy spectrum of the transmitted X-ray flux through an object. With this information one can distinguish the types of materials present in a radiograph and thus allow a computer to subtract them from the image enhancing the contrast of the remaining materials. Using this method, one can see details, which would have been hidden by overlying structures of other materials such as seen in radiographs of parts, made up of mixtures of metals and composites. There is also great interest …
Relationships Among Queer Theory Pedagogy, Sexual Orientation Competency, And Multicultural Environment In Counselor Education Training Programs, Dennis Allen Frank
Relationships Among Queer Theory Pedagogy, Sexual Orientation Competency, And Multicultural Environment In Counselor Education Training Programs, Dennis Allen Frank
Dissertations, Theses, and Masters Projects
No abstract provided.
Dynamics Of The Host-Parasite Interaction: In Vitro Correlates Of Crassostrea-Induced Modulation Of Perkinsus Marinus Function, Christopher G. Earnhart
Dynamics Of The Host-Parasite Interaction: In Vitro Correlates Of Crassostrea-Induced Modulation Of Perkinsus Marinus Function, Christopher G. Earnhart
Dissertations, Theses, and Masters Projects
Perkinsus marinus is an alveolate protozoan parasite of the eastern oyster (Crassostrea virginica) which is responsible for much of the decline in United States oyster populations. Perkinsus marinus can be cultured in vitro, but is rapidly attenuated in the process. Supplementation of a protein-free medium with oyster products altered proliferation, changed protease expression in the parasite extracellular products (ECP), induced morphological forms typically seen in vivo, and partially reversed parasite attenuation. Supplements derived from dissected oyster tissues were used to determine if these changes could be differentially elicited. These supplements, with the exception of adductor muscle, reduced proliferation. Whole oyster …
Specification And Determination Of Gabaergic And Glutamatergic Neural Phenotypes In Xenopus Laevis, Mei Li
Specification And Determination Of Gabaergic And Glutamatergic Neural Phenotypes In Xenopus Laevis, Mei Li
Dissertations, Theses, and Masters Projects
No abstract provided.
Neuronal Responses To Melatonin In Peromyscus Leucopus: A Candidate Mechanism For Circadian And Seasonal Temperature Regulation, Christopher Robert Fetsch
Neuronal Responses To Melatonin In Peromyscus Leucopus: A Candidate Mechanism For Circadian And Seasonal Temperature Regulation, Christopher Robert Fetsch
Dissertations, Theses, and Masters Projects
No abstract provided.
Status, Dominance, Or Prestige?: Domains Of Self-Esteem As Moderators Of Reactions To An Embarrassing Situation, Nicole Reed Buttermore
Status, Dominance, Or Prestige?: Domains Of Self-Esteem As Moderators Of Reactions To An Embarrassing Situation, Nicole Reed Buttermore
Dissertations, Theses, and Masters Projects
No abstract provided.