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 7 of 7 for “"virulence evolution"”.
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Drivers of Dengue Within-Host Dynamics and Virulence Evolution
… model to understand the potential for virulence evolution in dengue. Critically, I show that dengue is expected to evolve towards intermediate virulence, and that the optimal virulence of the virus depends strongly on the number of serotypes that co-circulate. Together, these …
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Exposure heterogeneity, host immunity and virulence evolution in a wild bird-bacterium system
… of this heterogeneity on pathogen fitness and evolution. A major source of heterogeneity in free-living host populations is the degree of exposure to a pathogen, as well as a host's history of exposure to a pathogen, which can create variation in standing immunity. We sought to determine the …
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An agent-based model to simulate virus-based biocontrol for the soybean cyst nematode, Heterodera glycines
… the epizootiology of within-nematode evolution, and the long-term population-level behavior. This study used an agent-based model, SCNSim, to simulate a virus-nematode-soybean system to investigate within-host virulence evolution. The nematode-agent recapitulates the nematode life …
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An impulsive differential equation model for Marek's disease
… us to investigate factors that may contribute to virulence evolution. Our model suggests that by decrease the cohort duration or by decreasing the flock density, Marek's disease can be eliminated from a barn with no increase in cleaning effort. Unfortunately our model also suggests that these …
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Factores que determinan la virulencia del virus del mosaico del pepino (CMV) en Arabidopsis thaliana
… huésped-parásito y en su evolución. Virulence is a key property of parasites, defined as the negative effect of infection on host fitness. Understanding virulence may be of socio-economic relevance due to the important impact of infectious diseases on human, animal and plant welfare, …
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Examination of the Molecular Epidemiology, Expansion, Population Structure, and Virulence of the Emerging Fungal Pathogen,<italic>Cryptococcus gattii</italic> in the United States
… epidemiology, population structure, and virulence attributes of <italic>C. gattii</italic> isolates collected from a cohort of HIV/AIDS patients in Los Angeles County, California. We show that these isolates consist almost exclusively of VGIII molecular type (>93%), in contrast to the …
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Towards bioengineered ecosystems: Three studies in invasion biology
… to the classic ""trade-off"" hypothesis in virulence theory, which states that lysis rate (virulence) and transmission rate are coupled. While no coupling relationship was assumed in our model, the relationship between lysis rate and transmission rate was markedly the most complex out of all …