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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 20 of 196 for “"phylogenetic analyses"”.
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Phylogenetic Analyses of Andean and Amazonian Tree Communities in Ecuador
… that have been little studied in a community phylogenetic context. The implementation of elevational transects and trait based analyses having proven useful in gaining a better understanding of how environmental factors are affecting the tree community structure in these habitats. The goal of …
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Morphological and Biochemical-based Phylogenetic Analyses of Opuntiae Prickly Pear Cacti of Southern California
<p>Phylogenetic analyses are used to suggest phylogenetic relationships for series Opuntiae (genus Opuntia, subgenus Opuntia) present in Southern California. The bases of the analyses were electrophoretic characters utilizing allelic band data obtained from electrophoretic assays conducted in this …
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Molecular and morphological phylogenetic analyses of Euphorbia L. (Euphorbiaceae) with an emphasis on Southern African representatives
… the Cape Floristic Region. The monophyly and phylogenetic relationships of the genus Euphorbia were investigated based on morphology and on sequences of the nuclear ribosomal internal transcribed spacer (ITS) and chloroplast psbA-trnH intergenic spacer. Fifty-one species of Euphorbia and four …
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Systematics of Caenodelphax Fennah (Hemiptera: Fulgoroidea: Delphacidae) and description of the new genus Flavoclypeus
… species with reference to morphological phylogenetic analyses to determine their evolutionary relationships. Phylogenetic analyses using maximum parsimony did not support Hamilton’s hypothesis, and instead suggested that eight ingroup species belong in a separate, new genus. Caenodelphax …
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BioInformatics, Phylogenetics, and Aspartate Transcarbamoylase
… product was then sequenced and used later in phylogenetic analyses concerning the evolution of ATCase. The second portion of this research involves taking multiple ATCase nucleotide sequences and performing phenetic and phylogenetic analyses of the archaea and eubacter families. From these …
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Molecular evolution of the cytochrome b gene among percid fishes
… latter two species were used as outgroups for phylogenetic analyses.
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A Phylogenetic Assessment of Thereva Latreille (Insecta: Diptera: Therevidae)
… on Thereva (1) using molecular data to test a phylogenetic hypothesis that posits a monophyletic Thereva with respect to a diverse sample of genera in Therevinae, (2) using molecular and morphological data to propose a species-level phylogeny for Thereva to identify biogeographical patterns, …
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Phylogenetics and biogeography of the relhanioid paper-daisy lineage (Asteraceae: Gnaphalieae) : palaeoenvironmental evolution, migration and speciation in southern Africa and the greater Afrotemperate regions
… not known, and a series of recent molecular phylogenetic analyses have indicated that the previously-accepted subtribal delimitation of Anderberg (1991) comprises non-monophyletic entities (Bayer et al. 2000; Bergh & Linder 2009; Ward et al. 2009). Anderberg's (1991) morphological parsimony …
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Systematics and Biogeography of the Didymopanax group of Schefflera (Araliaceae)
… groups in the Neotropical region. Previous phylogenetic studies of Schefflera have been limited to a small number of species from this region, and very little is know about phylogenetic relationships in the Brazilian-centered Didymopanax group of this genus. Therefore, to gain a better …
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Population genetics and systematics of a species-rich clade of Neotropical reef fishes, the tubeblenny genus Acanthemblemaria
… divergence per million years. Replicate Bayesian phylogenetic analyses failed to converge on the same posterior distributions because proposals to update the rate multiplier parameter were rarely accepted, but when the tuning parameter was adjusted, all datasets converged quickly on to the same …
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A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera (Apiaceae)
A phylogenetic and monographic study of Oxypolis, Ptilimnium, and closely related genera in the North American endemics clade of tribe Oenantheae (Apiaceae) was carried out. Sequences from the nuclear ribosomal DNA internal transcribed spacer (ITS) region and the chloroplast DNA trnQ-5'rps16 and …
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Systematics of Malesian Acalypha (Euphorbiaceae)
… and ultrastructure of Acalypha, molecular phylogenetic analyses, and a systematic revision of Malesian Acalypha was undertaken. Using light microscopy, scanning and transmission electron microscopy, the palynological study shows that Acalypha pollen is generally small and brevicolporate. …
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Studies of new world treehoppers of the subfamily Centrotinae with emphasis on the Caribbean fauna (hemiptera: membracidae)
… Although higher-level morphological systematic analyses have greatly improved our understanding of this group, the relationships within the New World fauna remain unclear, particularly in light of recently described and still undescribed genera from Central America and the Caribbean islands. …
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HORIZONTAL GENE TRANSFER (HGT) AND SPHAGNUM FALLAX: A PHYLOGENETIC LOOK INTO THE OCCURRENCE, PREVALENCE, AND IMPORTANCE OF HORIZONTAL GENE TRANSFER IN A BOG MOSS
… bog moss known as Sphagnum fallax and performed phylogenetic analyses for each protein sequence/family. The topologies of each constructed phylogenetic tree were studied to find evidence of HGT involving S. fallax. Twenty-three candidate sequences were classified as contaminants, 10 were …
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Functional, Biochemical and Molecular Analyses of the *Cold Stable Eye Lens Crystallins From the Antarctic Toothfish Dissostichus Mawsoni
… 21 isoforms (2 alphas, 6 betas, and 13 gammas). Phylogenetic analyses suggest that toothfish alpha and beta crystallins are orthologues of mammalian counterparts, while gammas do not. Further separation, partial purification (ion-exchange chromatography) and analyses (isoelectric focussing and 2D …
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Phylogenomic analysis of hemimetabolan insects with emphasis on the hemipteran suborder Auchenorrhyncha and the superorder Paraneoptera
… researchers to seek additional sources of phylogenetic information. The past two decades have seen an extraordinary expansion in the availability of genome-scale data from non-model organisms including insects due to increasing availability and affordability of high-throughput sequencing …
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Diverzita a evoluce anaerobních heteroloboseí
… diversity and described 11 new species. Our phylogenetic analyses showed that obligately anaerobic heteroloboseans evolved at least twice independently (Creneidae and Psalteriomonadidae). Psalteriomonadidae is a major anaerobic lineage of Heterolobosea as it includes 16 species and 5 genera. …
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Bartonella in Small Mammals from Montana and Idaho
… being the most frequently detected. Phylogenetic analyses using both Bayesian inference (MrBayes) and maximum likelihood (IQ-TREE) approaches demonstrated strong host-associated clustering of known <em>Bartonella </em>species. These findings provide important insights into …
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Phylogenetics and biogeography of Australian subterranean Parabathynellidae.
… descriptions of new taxa in the absence of any phylogenetic framework. This thesis provides a comprehensive molecular systematics framework for Australian Parabathynellidae, which is used to explore phylogenetic relationships amongst parabathynellids, their diversity, some aspects of character …
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