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Understanding The Evolutionary History Of Biochemical Innovation, Madeline Opal St. Julien
Understanding The Evolutionary History Of Biochemical Innovation, Madeline Opal St. Julien
Theses and Dissertations
The serine protease (SP) gene family is an ecologically important gene family because of observed involvement in innate immunity, digestive processes, and embryological development of arthropods. In the past decade, all genes of the serine protease family have been classified in a number of arthropods, with the exception of crustacean. Possible evolutionary mechanisms have been observed based off of varying selectional pressures acting on recent SP expansions in respect to varying diets. Daphnia is the first crustacean to have its genome sequenced, and their genomes were analyzed in this study to elucidate the expansion and divergence of the SP gene …
Characterizing The Fitness Landscapes Of Gut Symbionts In Defined Community And Diet Contexts, Meng Wu
Characterizing The Fitness Landscapes Of Gut Symbionts In Defined Community And Diet Contexts, Meng Wu
Arts & Sciences Electronic Theses and Dissertations
A species' niche is the description of all the environmental conditions required to permit a population of that species to persist, including the effects of the population on those conditions. This definition includes the species' resource requirements, as well as stress tolerances and interactions with other species acting as competitors, predators, parasites, and mutualists. The human gut microbiota serves as a microbial `metabolic organ' tasked in part with the biotransformation of many components of our diet. Relatively little is known about the factors that allow members of the human gut microbiota to persist in a habitat that experiences marked changes …
Differential Expression Of Snmps And Their Underlying Transcriptional Regulation In Chemosensory Pathways Of Drosophila, Richard A. Fandino
Differential Expression Of Snmps And Their Underlying Transcriptional Regulation In Chemosensory Pathways Of Drosophila, Richard A. Fandino
Theses and Dissertations
Insects possess complex and diverse chemosensory pathways which have specific phenotypes determined by the regulated expression of specific combinations of genes. While many of these genes (e.g. ORs and GRs) have very narrow expression patterns, associating with only a limited number of chemosensory sensilla, SNMPs show a very broad expression pattern. In Drosophila, SNMP1 and SNMP2 associate with the majority of olfactory and gustatory sensilla, but express in different cell types. In olfactory sensilla, SNMP1 and SNMP2 associate with trichoid or coeloconic neurons respectively, and both additionally express in a variety of sensilla support cells; in gustatory sensilla, SNMP2 expresses …
Differences In The Communicative Behavior And Neurobiology Of Chimpanzees (Pan Troglodytes) And Bonobos (Pan Paniscus), Brittany Moore
Differences In The Communicative Behavior And Neurobiology Of Chimpanzees (Pan Troglodytes) And Bonobos (Pan Paniscus), Brittany Moore
Master of Science in Integrative Biology Theses
Chimpanzees and bonobos have distinctly different vocalizations, but it is unclear why these differences have evolved. We hypothesized that differences in habitat and feeding ecology have selected for bonobos to have an increased reliance on vocal communication compared to chimpanzees. To evaluate this hypothesis 1571 chimpanzee vocal events and 612 bonobo vocal events were analyzed. After analyzing and coding video of communicative interactions it was determined that chimpanzees are more likely than bonobos to utilize multimodal communication and to direct vocalizations to an individual conspecific. Bonobos were more likely than chimpanzees to produce a vocalization that was not bound to …
The Role Of Landscape Variation In Shaping The Evolutionary Diversification Of Chimpanzees (Pan Troglodytes) In A Biodiversity Hotspot, Matthew William Mitchell
The Role Of Landscape Variation In Shaping The Evolutionary Diversification Of Chimpanzees (Pan Troglodytes) In A Biodiversity Hotspot, Matthew William Mitchell
Legacy Theses & Dissertations (2009 - 2024)
In this dissertation, I combine population genetic and demographic history analyses of autosomal, mitochondrial and Y-chromosome genetic markers with spatially explicit modeling techniques to study the biogeographic mechanisms responsible for shaping patterns of genetic diversity among chimpanzees in Cameroon and eastern Nigeria. I also describe a new software tool, TESS Ad-Mixer, that I developed early on in this study to help visualize the geographic distribution of demes recovered from population cluster analyses.