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 17 of 17 for “"Systematic biology"”.
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Systematics and Biogeography of the Sawfly Genus Pristiphora Latreille (Hymenoptera: Tenthredinidae) in North America
Sawflies in the subfamily Nematinae (Hymenoptera: Tenthredinidae) are cold-adapted insects that reach their greatest species richness in temperate, boreal, and arctic/subarctic regions of the Northern Hemisphere – a pattern that runs counter to that of most other organisms. The reasons for this …
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The Lecanicephalidean Fauna of the Stingray Genus Pastinachus (Myliobatiformes: Dasyatidae)
The lecanicephalidean fauna of the cowtail ray genus Pastinachus is relatively unknown. Despite the description of over 30 nominal lecanicephalidean species parasitizing Pastinachus, only six lecanicephalidean species known to parasitize Pastinachus are currently considered valid. The contents of …
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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 …
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Systematics, Biogeography, and Phylogeography of Thylamys Mouse Opossums, a Recent Radiation of Neotropical Marsupials
This project broadly explores the systematics, biogeography, and phylogeography of <italic>Thylamys</italic> mouse opossums, a genus of Neotropical marsupials from central and southern South America. Chapter 1 is part of a collaborative work with Robert Voss and Sharon Jansa (Chapter 1). In it, we …
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Integrative Analysis of the Myc and E2F pathway Reveal the Roles for microRNAs in Cell Fate Control
<p>Cancer is a disease state that arises as a result of multiple alterations in signaling pathways that are critical for making key cell fate decisions in normal cells. Understanding how these pathways operate under normal circumstances, therefore, is crucial for comprehensive understanding of …
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Dynamic Characterization of the IKK:κBα:NFκB Negative Feedback Loop Using Real-Time Bioluminescence Imaging
… <em>in silico</em> modeling, and cell/molecular biology techniques to rigorously interrogate how diverse stimuli impact the IKK:NF-κB: IκBα negative feedback loop in single cells, cell populations, and at the organ- and tissue-level <em>in vivo.</em></p>
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Evolution of the aquatic beetle family Noteridae (Coleoptera: Adephaga): integrating methods to examine patterns of diversification across temporal scales.
Parsing the evolutionary patterns and processes that underly beetle diversity has been the subject of countless investigations. With an estimated crown age of 300 million years and millions of species, beetle evolution has unfolded over broad temporal and spatial scales. My dissertation focuses on …
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Introgression, Population Structure, and Systematics of the Sphagnum capillifolium complex
<p>How geographical distance and historical events affect patterns of population divergence and gene flow is an important question in evolution and biogeography. Sphagnum subgenus Acutifolia is one of the four major subgenera of Sphagnum peatmoss comprising numerous species with broad geographic …
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Systematics and Ecology of Truffles (Tuber)
… goal of my dissertation is to address the systematics, ecology, and biogeography of Tuber within a phylogenetic framework. Multiple loci were sequenced from Tuber ascoma collected worldwide including ectomycorrhizae, though an emphasis was placed on sampling taxon within North American. …
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Evolution in Neotropical Herpetofauna: Species Boundaries in High Andean Frogs and Evolutionary Genetics in the Lava Lizard Genus Microlophus (Squamata: tropiduridae): A History of Colonization and Dispersal
… manuscript provisionally accepted in the journal Systematic Biology. This paper introduces the lizard genus Microlophus (“lava lizards”) as a study system, and includes a large nuclear data set accompanied by an equally large mitochondrial data set (7877 characters in total). This paper explicitly …
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The Principles and Applications of Plasmid Transfer in Microbial Communities
<p>Conjugative plasmids can mediate the spread and maintenance of diverse traits and functions in microbial communities. This role depends on the plasmid’s ability to persist in a population. However, for a community consisting of multiple populations transferring multiple plasmids, the conditions …
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Novel Sequence-Based Method for Identifying Transcription Factor Binding Sites in Prokaryotic Genomes
… enabling protein-engineering and synthetic biology applications.
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SPECIES RECOGNITION IS DRIVING EVOLUTION OF THE ACOUSTIC MATING SYSTEM OF SHIELD BACK KATYDIDS (ORTHOPTERA: TETTIGONIIDAE: AGLAOTHORAX): BEHAVIORAL AND PHYLOGENETIC EVIDENCE
Sexual selection and species recognition are two processes that may drive evolution of mating systems and contribute to speciation. Evidence from nature is rare. I asked whether song evolution in shield-back katydids (Aglaothorax) from southern California is consistent with either of these …
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Development and Application of a quantitative Mass spectrometry based Platform for Thermodynamic Analysis of Protein interaction Networks
<p>The identification and quantification of protein-protein interactions in large scale is critical to understanding biological processes at a systems level. Current approaches for the analysis of protein -protein interactions are generally not quantitative and largely limited to certain types of …