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 12 of 12 for “"phylogenetic placement"”.
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Performing phylogenetic placement at scale
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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SCAMPP: Scalable alignment-based phylogenetic placement
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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New taxa and phylogenetic placement of Asterinales from Brazil
… are described and illustrated. A combined phylogenetic analysis of the ribosomal sequences (18S and 28S rDNA) and protein-coding (TEF and RPB2) confirmed that Asterinales form a monophyletic clade well supported within the Dothideomycetes. The sister relationship of Schizothyriaceae and …
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Molecular Phylogenetic Analysis of Novel Spiroplasma Isolates
… of the closely related spiroplasma isolates. Phylogenetic analyses and non-genetic character mapping indicated that all study isolates belonged to the Apis clade; arginine hydrolysis was a strong indicator of evolutionary relatedness; surface serology and phylogenetic placement were congruent; …
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The embryology of Prionium serratum (L.f.) Drege ex E.Mey. (Juncaceae:Cyperales) and its implications for the phylogeny of Cyperales
This study investigates the phylogenetic placement of Prionium serratum, a monotypic genus in the family Juncaceae and the consequences of this on the evolutionary relationships of Cyperales using embryology, morphology and rbcL sequence data. The embryology of Prionium conforms to that found in …
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Evolution and Anatomy of Early Terrestrial Arthropods: Insights from the Rhynie Chert
… for terrestrial life and reaffirming their placement within or as a sister-group to Tetrapulmonata (Chapters 2 & 3). Additionally, a comprehensive reassessment of the enigmatic fossil Rhyniognatha hirsti revises its phylogenetic placement and challenges its controversial status as a …
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Phylogenetic inference using ancient environmental DNA
… aeDNA has only been applied to population and phylogenetic studies in the last few years. In this thesis, I first build a theoretical coalescent framework to analyze error in supervised binning algorithms, which assign reads from environmental samples to individual taxa in a reference database. …
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Probing the role of clay minerals in the preservation of organics and soft tissues
… (soft-bodied Ediacaran organism with unknown phylogenetic placement) preserved in a clay-rich siliciclastic deposit from the Woods Canyon Formation in Nevada. From the data collected to characterize both morphotypes, we concluded that the clay minerals present were likely important in the …
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Novel approaches for large-scale phylogenetics and applications in the context of the amphibian tree of life
… some problems associated with large-scale phylogenetic analyses by tackling issues related to missing data and careful handling and addition of novel data in large-scale reconstructions, presenting an application of this approach in the context of amphibian phylogenetics. I developed a …
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A Phylogenetic Study of Cymopterus and Related Genera (Apiaceae)
… monophyly of Cymopterus , and to ascertain its phylogenetic placement among these other genera. To elucidate evolutionary patterns of fruit and other characters and to evaluate their utility in circumscribing genera and major clades, 54 morphological characters were analyzed phylogenetically. …
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Resolving phylogenetic relationships within the order Enoplida (Phylum Nematoda)
… habitats. Molecular data were used to assess the phylogenetic placement of the Enoplid clade, resolve internal taxonomic relationships within this group, and investigate relationships between shallow water and deep-sea fauna.<br/>Despite rigorous empirical testing and comprehensive taxon sampling, …
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Community structure and pathogenomics of Pinaceae-infecting Fusarium spp.
… was also discussed. For this reason, phylogenetic placement of the isolates was used for species identification; however, it is recognized that more research, such as whole genome sequencing, is needed to further validate the taxonomic identify of the isolates used in this study. …