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Full-Text Articles in Life Sciences
Elucidating The Factors That Modulate The Distribution Of Avian Haemosporida Parasites Across A Community Of Hosts, Matthew Christopher Ikaika Medeiros
Elucidating The Factors That Modulate The Distribution Of Avian Haemosporida Parasites Across A Community Of Hosts, Matthew Christopher Ikaika Medeiros
Dissertations
Parasites are heterogeneously distributed across host species, host populations, and host individuals within populations. A primary aim of infectious disease ecology seeks to uncover the factors that drive this heterogeneity. At a fundamental level, host infection is determined by exposure and susceptibility to a pathogen. My dissertation explores how evolutionary and ecological forces associated with these fundamental determinates of infection shape variation in parasite host breadth and host infection status. Here, I focus on a community of vector-borne avian Haemosporida parasites among suburban birds of Chicago, IL. These parasites exhibit strong variation in their distribution among available hosts, and provide …
Evaluation Of The Efficacy Of 1-Octen-3-Ol And Carbon Dioxide Chemoattractants With Mosquitoes And Bloodmeal Analysis Of Culex Mosquito Spp. In Lancaster County, Nebraska, Julianne N. Matczyszyn
Evaluation Of The Efficacy Of 1-Octen-3-Ol And Carbon Dioxide Chemoattractants With Mosquitoes And Bloodmeal Analysis Of Culex Mosquito Spp. In Lancaster County, Nebraska, Julianne N. Matczyszyn
Department of Entomology: Dissertations, Theses, and Student Research
The purpose of mosquito-borne disease surveillance is to assess the risk of pathogen transmission by assessing mosquito populations and the prevalence of disease pathogens in those populations. West Nile virus (WNV) is an important mosquito-borne virus in Nebraska, and can be transmitted by several mosquito species found in Lancaster County, Nebraska, including Culex pipiens L., Culex salinarius Coquillett, Culex restuans Theobald, Culex tarsalis Coquillett, Culex territans Walker, and Culex erraticus Dyar & Knab. These species are ornithophilic, yet many studies indicate a shift in host feeding to mammalian in late summer months. One-octen-3-ol (octenol) can be isolated …
Modulators Of Symbiotic Outcome In Sinorhizobium Meliloti, Matthew B. Crook
Modulators Of Symbiotic Outcome In Sinorhizobium Meliloti, Matthew B. Crook
Theses and Dissertations
Microorganisms interact frequently with each other and with higher organisms. This contact and communication takes place at the molecular level. Microbial interactions with eukaryotes can be pathogenic or mutualistic. One of the best-studied symbioses is the complex interaction between nitrogen-fixing soil bacteria, termed rhizobia, and legumes. This symbiosis culminates in the elaboration of a new organ, the root nodule. Many of the molecular signals exchanged between the host plant and the invading rhizobia have been deduced, but there is still much that remains to be discovered. The molecular determinant of host range at the genus level of the plant host …