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 10 of 10 for “"Mycoplasma gallisepticum"”.
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Effects of feeder surface cleaning on <i>Mycoplasma gallisepticum</i> transmission in House Finches
… bird feeders across North America: the bacteria Mycoplasma gallisepticum (MG). MG causes severe "pink eye"-like symptoms and sluggish behavior in house finches. In extreme cases, MG causes temporary blindness and death for birds that cannot find food or avoid predators. I used two experiments to …
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Mixed respiratory infections in turkeys, with emphasis on avian metapneumovirus, Ornithobacterium rhinotracheale, Escherichia coli and Mycoplasma gallisepticum
… rhinotracheale, Escherichia coli and Mycoplasma gallisepticum
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Behavioral Heterogeneity and Disease Dynamics in House Finches (Haemorhous mexicanus)
… and transmission of the bacterial pathogen Mycoplasma gallisepticum (Mg), indicating that variation in host foraging behavior has important transmission consequences in this system. Lastly, we found that the density of bird feeders available to house finches predicts the extent of Mg …
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Understanding the Evolution of Emerging Bacterial Pathogens in Response to Host Resistance
… – that of the avian bacterial pathogen Mycoplasma gallisepticum and its recently infected novel host the House Finch (Haemorhous mexicanus). Approximately 25 years ago this pathogen jumped from its established host in chickens into the wild passerine finch species, triggering an epidemic …
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Potential Downstream Immunological Effects of Evolved Disease Tolerance in House Finches
… other pathogens. In 1994 the bacterial pathogen, Mycoplasma gallisepticum (MG) jumped from poultry into house finches, causing severe conjunctivitis and reducing host survival. MG then spread across the continental United States, exerting strong selection on host populations and creating …
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Infectious disease as a cause and consequence of phenotypic responses to challenge in a songbird species
… house finch responses to the bacterial pathogen Mycoplasma gallisepticum (MG). Although nutritional stress limited mass gain in nestlings, individual responses to MG did not vary with nutritional stress, possibly indicating that the development of immune responses is resilient even in the face of …
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Effects of ambient temperature on mechanisms of pathogen transmission in house finches (Haemorhous mexicanus)
… of transmission of the bacterial pathogen Mycoplasma gallisepticum (MG). These interactions likely contribute to the fall and winter outbreaks of mycoplasmal conjunctivitis, a disease characterized by severe conjunctival swelling and changes in behavior in house finches. In my first …
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Reproductive Soundness and Egg Quality in Chickens Selected for Low and High Antibody Response
For 36 generations, White Leghorn chickens were selected for high (HAS) or low (LAS) antibody response to sheep red blood cells. The focus of this thesis was to investigate correlated responses in reproductive soundness and egg quality resulting from that selection. Forty-five hens and 25 roosters …
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Effects of Bird Feeder Density on the Behavior and Ecology of a Feeder-Dependent Songbird: Patterns and Implications for Disease Transmission
Anthropogenic resource provisioning of wildlife has increasingly been hypothesized to alter pathogen spread. Although bird feeding is the most widespread form of intentional wildlife provisioning, we know relatively little about how the degree of anthropogenic feeding at a site impacts wild birds …
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Exposure heterogeneity, host immunity and virulence evolution in a wild bird-bacterium system
Immunological heterogeneity is the norm in most free-living vertebrate populations, creating a diverse and challenging landscape for pathogens to replicate and transmit. This dissertation work sought to determine sources of immunological heterogeneity, as well as the consequences of this …