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 20 of 62 for “"molecular phylogeny"”.
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A molecular phylogeny of the Microsporida
The molecular phylogenetics of the Microsporida were investigated using small subunit ribosomal RNA gene sequence data. The small subunit ribosomal RNA gene was sequenced and aligned for 27 species from 18 genera and analyzed using various eukaryotic, eubacterial, and archaebacterial sequences as …
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A Molecular Phylogeny of the Calypterate Diptera
… developed as a tool for eukaryotic family level phylogeny. This region was sequenced for 20 Diptera and analyzed using the computer package PAUP (Phylogenetic Analysis Using Parsimony), created by David Swofford. The trees were compared to previous analyses based on morphological characters and …
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A molecular phylogeny of the subfamily Arundinoideae (Poaceae)
… is proposed as being most likely. The molecular phylogeny implies that eight grass subfamilies should be recognised. Two of these, the Danthonioideae and Aristidoideae, are new and the Arundinoideae is redelimited. Furthermore, new tribes in the subfamilies Centothecoideae …
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Bioluminescence in dinoflagellates – diversity, molecular phylogeny and field ecology
… waters of the oceans. This<br/>study employed molecular tools to investigate the identity of bioluminescent species, the genetic basis, diversity and functional regulation of bioluminescence, and the distribution of marine bioluminescent dinoflagellate populations.<br/><br/>Using “universal” …
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Molecular Phylogeny of the Genus Houstonia and Allies in Rubiaceae
… rps16) DNA sequences were used to build a molecular phylogeny depicting relationships within Houstonia and among the closely related genera Stenaria and Stenotis, all of which used to be considered Hedyotis. Separate and combined datasets show Stenaria is nested within the Houstonia lineage …
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Molecular phylogeny of Tribolium (Danthonioideae: Poaceae) and its taxonomic implications
Molecular sequence data from two noncoding regions of DNA (ITS AND TRNL-F) were used to produce a phylogeny for the genus Tribolium and its African and Australasian allies. Topological comparisons of the combined molecular data with the appended existing morphological tree were made. A significant …
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Morphology, Molecular Phylogeny and Genome content of Bothriochloa focusing on Australian taxa
… using different evidences from morphology, molecular information and genomic content. Nineteen morphological characters were observed, three regions (trnT-F, rps16 intron and 3'trnK) of chloroplast genome phylogenetic were used in phylogenetic reconstruction, and chromosome counting as well …
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Molecular phylogeny of Melanospora and Diaporthales, and population genetics of dogwood anthracnose fungus
… There were three clades in the LSU nrDNA phylogeny. The five Discula species were in one of the clades but they were not monophyletic. This delimitation is congruent with anamorph and pigmentation distributions in the diaporthalean taxa but is not congruent with family concepts based on …
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Molecular phylogeny, phylogeography and population genetics of the red seaweed genus <i>Asparagopsis</i>
… was studied with respect to its taxonomy, phylogeny, phylogeography and population genetics. The representatives of this genus, <i>A. armata</i> Harvey and <i>A. taxiformis</i> (Delile) Trevisan, are notorious invaders. Both species occur worldwide and show disjunct distribution patterns. …
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Molecular phylogeny and morphological reconstructions of Plagiochilaceae (Jungermanniopsida) with hypotheses on biogeography and divergence times
Plagiochilaceae gehören mit etwa 500 Arten, deren überwältigende Mehrheit der Gattung Plagiochila zugeordnet wird, zu den größten Familien der beblätterten Lebermoose. Obwohl Mitglieder der Familie weltweit, vom tiefen Süden bis in den hohen Norden, auftreten, sind die meisten Arten auf die …
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Molecular Phylogeny of Stingless Bees: Insights Into Divergence Times, Biogeography, and Nest Architecture Evolution (Hymenoptera: Apidae: Meliponini)
The dissertation is concluded with a biological catalog of the Indo-Malayan/Australasian stingless bees including 519 literature references, and deals with 129 proposed names for species-group taxa, of which 89 are considered currently valid. Information is summarized on organisms associated with …
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A molecular phylogeny of the families and orders of Collembola (Arthropoda: Hexapoda) using the 18S rDNA gene
In this study I investigate the phylogenetic relationships of the families and orders of Collembola, with special reference to six groups that traditionally have been problematic, or that have become problematic with the implementation of the cladistic philosophy to the systematics of the group. …
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Further studies with Melianthus L. : a molecular phylogeny, evolutionary patterns of diversification in the genus and pollinator syndromes
A phylogeny was produced for the eight taxa comprising the largely South African genus Melianthus L. based on two plastid markers (trnL-F and psbA-trnH) and one nuclear marker (ITS). Topological comparisons with a tree based on an existing morphological data set revealed significant incongruence …
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Systematics of the Australian members of bee fly subfamily Bombyliinae and molecular phylogeny of the superfamily Asiloidea using anchored hybrid enrichment and transcriptome data
… analysis of morphological (Yeates, 1994) and molecular data (Trautwein et al., 2011), however, not many subfamily relationships were strongly supported. In this thesis, two phylogenomic analysis were performed focusing on the phylogenetic position of Bombyliidae and the family relationships of …
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Systematics of the Australian members of bee fly subfamily Bombyliinae and molecular phylogeny of the superfamily Asiloidea using anchored hybrid enrichment and transcriptome data
… analysis of morphological (Yeates, 1994) and molecular data (Trautwein et al., 2011), however, not many subfamily relationships were strongly supported. In this thesis, two phylogenomic analysis were performed focusing on the phylogenetic position of Bombyliidae and the family relationships of …
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Molecular phylogeny, generic delineation, and historical biogeography of Cryptocheilus Panzer, 1806 and Heterodontonyx Haupt, 1935 with taxonomic revision of Australian species using mitochondrial genes, the ribosomal operon and UCE loci
… Cryptocheilus and Heterodontonyx, 2- build a molecular phylogeny of Cryptocheilus and closely related genera, 3- to reconstruct the historical biogeography of the genera, and 4- to provide a taxonomic revision of the Australian species. Phylogenetic analyses show that all species from …
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Molecular phylogeny, generic delineation, and historical biogeography of Cryptocheilus Panzer, 1806 and Heterodontonyx Haupt, 1935 with taxonomic revision of Australian species using mitochondrial genes, the ribosomal operon and UCE loci
… Cryptocheilus and Heterodontonyx, 2- build a molecular phylogeny of Cryptocheilus and closely related genera, 3- to reconstruct the historical biogeography of the genera, and 4- to provide a taxonomic revision of the Australian species. Phylogenetic analyses show that all species from …
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Hidden Diversity of Madagascan Freshwater Crabs (Brachyura: Potamoidea) Revealed by Morphological and Molecular Studies
… Chapter 1 is based on a newly published molecular phylogeny that used the highest taxonomic sampling to date, including almost all of the island’s known freshwater crab genera and species. The phylogeny revealed a significant number of unidentified specimens that belong to several new …
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Ancient origins of a diverse stygofaunal group: The Australian Bathynellidae (Crustacea)
… companies allowed a thorough morphological and molecular examination of many specimens. The study of multiple taxa occurring in different aquifers of the same and different catchments is carried out to explore intra-interspecific variability, species and distributional boundaries, and …
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The evolution of annuality in association with a shift to more arid environments in the daisy genera Ifloga and Tricogyne
… and climate variables were mapped onto a molecular phylogeny (obtained using plastid trnL-trnF and psbA-trnH and nuclear ETS sequences) of the genera Trichogyne and Ifloga (Asteraceae). Bayesian methods were used for phylogeny inference and maximum likelihood methods for ancestral state …
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