Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"Biology, Parasitology"”.
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Multiple species of Phoreiobothrium from the blacktip shark,
During a survey of the adult tapeworm fauna of sharks from the Gulf of Mexico, the blacktip shark, Carcharhinus limbatus (Müller and Henle, 1839), was found to host cestodes in the genus Phoreiobothrium. Carcharhinus limbatus inhabits the world's tropical and warm temperate waters. As yet, 34 …
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Plasmodium Gallinaceum in Vivo and in Vitro
The findings presented in this dissertation provide a more solid foundation for the comparison of avian malaria with falciparum malaria, and strengthen the rationale upon which to base development of attenuated live sporozoite vaccines for falciparum malaria.
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Analysis and Characterization of Vitamin B Biosynthesis Pathways in the Phytoparasitic Nematode Heterodera Glycines
The soybean cyst nematode (SCN), Heterodera glycines is an obligate plant parasite that can cause devastating crop losses. To aide in the study of this pathogen, the SCN genome and the transcriptome of second stage juveniles and eggs were shotgun sequenced. A bioinformatic screen of the data …
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Effects of Dietary Fiber on Neonatal Intestinal Development and Resistance to Salmonella Typhimurium Infection in Piglets
In summary, dietary fibers with different degrees of fermentability prevented S. typhimurium-infection-associated symptoms in piglets, maintained intestinal structure and function, enhanced innate and adapted immune response, and its addition to formula, could provide a cost-effective means to …
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The role of midgut serine proteases in Aedes aegypti vector competence
Numerous gut-associated viruses utilize host proteolytic enzymes to facilitate enhancement of infection. Similarly, arboviruses infecting the invertebrate host (vector) through the alimentary tract may exploit serine proteases in the midgut to enhance vector infection. Recent genetic and …
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The characterization of cysteine protease 4 and superoxide dismutase 6 in Trichomonas vaginalis
Pathogenesis attributable to infection with Trichomonas vaginalis , the causative agent of Trichomoniasis, is largely unknown although cysteine proteases have been implicated. This paper investigated the role of cysteine protease 4 (CP4) in T. vaginalis through characterization and expression of …
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Microarray analysis of Trichomonas vaginalis strains T1 and G3: Identifying genes that may contribute to virulence and metronidazole resistance
<p>Trichomonas vaginalis is a protozoan parasite responsible for causing nearly eight million cases of Trichomoniasis every year in the United States. Trichomoniasis is often an asymptomatic infection, but in some cases it does lead to mild clinical manifestions. Trichomoniasis is easily treated …
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Lipid Targets of the Antimalarial Trioxanes in <i>Plasmodium falciparum</i>
<p>Malaria is among the most debilitating diseases of man. The protozoan parasite, <em>Plasmodium falciparum</em>, causes over a million annual fatalities. The antimalarial trioxanes, exemplified by artemisinin, are among the few pharmaceuticals for which clinical resistance has not become …
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Predictors, Costs, and Consequences of Larval Tapeworm Infection in Geladas (Theropithecus gelada).
<p>Parasitism is integral to primate evolution, contributing to major life history tradeoffs with other processes critical to reproductive success and survival. I investigate how infection with the tapeworm Taenia serialis affects geladas (Theropithecus gelada) in the Simien Mountains National …
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Host-Parasite Interactions Within Food Webs
<p>Parasitism is one of the most common life history strategies employed in nature, yet the effects of parasites are often thought to be minimal, and the vast majority of studies fail to consider parasites and their effects on host organisms. This is likely a problem, as the magnitude of …
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Abiotic Factors Contributing to the Survival of Three Tick Species in Southeastern Virginia, <i>Amblyomma Americanum</i> (Lone Star Tick), <i>Dermacentor Variabilis</i> (American Dog Tick), and <i>Amblyomma Maculatum</i> (Gulf Coast Tick)
<p><em>Amblyomma americanum</em>, <em>Amblyomma maculatum</em>, and <em>Dermacentor variabilis</em> are hard-bodied ticks in the Hampton Roads area of southeastern Virginia. This study consisted of two field projects focused on these tick species. To estimate the off-host survival of local tick …
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Systematics, Phylogeography and Ecology of Elaphomycetaceae
<p>This dissertation is an investigation of the systematics, phylogeography, and ecology of a globally distributed fungal family, the Elaphomycetaceae. In Chapter 1, we assess the literature on fungal phylogeography, reviewing large-scale phylogenetics studies and performing a meta-data analysis of …