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Showing 1 to 20 of 210 for “"phylogenetic relationships"”.
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Phylogenetic Relationships of Thermophilic Bacteria
… eubacteria and the archaebacteria. The phylogenetic relationships of several new isolates of extremely thermophilic bacteria have been determined and used to gain a deeper understanding of the role of thermophilic bacteria in early evolution. The 16S and 23S ribosomal RNA genes from the …
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Phylogenetic Relationships within Coleeae (Bignoniaceae Juss.)
… The purpose of this study was to explore the phylogenetic relationships within Coleeae. In order to do so, techniques such as PCR by using universal primers for waxy nuclear gene, agarose electrophoresis, cloning and sequencing were performed. A total of 26 taxa were successfully amplified. …
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The phylogenetic relationships of the subfamily Desmognathinae (order Caudata)
Electronic Thesis or Dissertation
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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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Cyperaceae tribe Cyperae : phylogenetic relationships and evolutionary patterns of diagnostic characters
Phylogenetic relationships in Cyperus and allied genera in the tribe Cypereae (family Cyperaceae) have been reconstructed using parsimony and Bayesian analyses of a combined data matrix, which consisted of plastid DNA (rbcL, trnL-F intergenic spacer, and rps16), nuclear ribosomal DNA (internal …
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Molecular Phylogenetic Relationships of North American Dermacentor Ticks Using Mitochondrial Gene Sequences
… remain largely unresolved. This study focuses on phylogenetic relationships of the eight North American Nearctic <em>Dermacentor </em>species: <em>D. albipictus, D. variabilis, D. occidentalis, D. halli, D. parumapertus, D. hunteri, </em>and <em>D. andersoni</em>, and the recently re-established …
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Investigation of DNA Variability and Phylogenetic Relationships of Perlesta (Plecoptera: Perlidae) in Mississippi
… include (1) linking nymphs to adults and (2) phylogenetic analysis of all species occurring in Mississippi using DNA data. Three species of <em>Perlesta</em> have been reported for Mississippi (<em>P. lagoi</em>, <em>P. placida</em>, and <em>P. shubuta</em>), but <em>P. placida</em> has no DNA …
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Phylogenetic Relationships and Character Evolution of the Neotropical Butterfly Genus Hamadryas (Nymphalidae: Biblidinae)
… within the genus, however no hypothesis of their phylogenetic relationship was proposed. The present dissertation provides a step further into the understanding of this fascinating group of butterflies not only by proposing the first phylogenetic hypothesis for the genus based on morphological and …
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Inference of phylogenetic relationships in passerine birds (Aves: Passeriformes) using new molecular markers
… was to provide deeper insights in passerine phylogenetic relationships using new molecular markers. The monophyly of the largest avian order Passeriformes (~59% of all living birds) and the division into its suborders suboscines and oscines are well established. Phylogenetic relationships …
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The Phylogenetic Relationships Among Extant Catfishes, With Special Reference to Ictaluridae (Otophysi: Siluriformes)
… diversity within several species of Noturus. Relationships among members of the subgenus Rabida were resolved and in many cases well supported. Relationships among Schilbeodes were poorly resolved. A calibrated substitution rate identified a period between 8 and 2 million years ago in which …
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Investigations of Phylogenetic Relationships of the Percidae (Actinopterygii: Perciformes) Using Comparative DNA Sequences
… America. This investigation attempts to resolve phylogenetic relationships of percid fishes at three hierarchical levels. First, complete sequences from two mitochondrial genes (cytochrome b and 16S rRNA) and a portion of a single-copy nuclear gene (Tmo-4C4) were used to estimate phylogenetic …
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Phylogenetic relationships of the African species of the genus Merxmuellera Conert (Poaceae: Danthonioideae)
This study expands on existing molecular (rpoC2 and ITS) and morphological data sets to further test the hypothesis of non-monophyly of Merxmuellera sensu lato. The results reveal that despite high levels of resolution, the morphological data yield poorly supported phylogenies due to high levels of …
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Cryptobenthic Coral Reef Fishes: Resolving Critical Gaps in Species Delimitation, Sampling Techniques, and Phylogenetic relationships
… sigillata complex. Specifically, I constructed phylogenetic trees and conducted several types of single-locus and multilocus species delimitation analyses and compared these to groupings based on morphology, as well as their geographic distribution. Overall, I found evidence for the presence of …
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Phylogenetic relationships among beetles within the genus Onymacris (Coleoptera : Tenebrionidae) : a phenetic versus cladistic approach
Phylogenetic relationships among species within the beetle genus Onymacris (Coleoptera Tenebrionidae) are identified using phenetic and cladistic approaches. Phylogenetic results from cladistic analyses proved to be more robust than those derived with phenetic approaches. However, phenetic analyses …
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On the Phylogenetic Relationships Among Paenungulata and Within Elephantidae as Demonstrated by Molecular and Osteological Evidence
… in the two approaches. Following are close relationships based on osteological results: (1) Proboscidea, Sirenia, Desmostylia, Hyracoidea, Embrithopoda (=PAEN); (2) Cetacea, PAEN; (3) Tubulidentata, Ungulata (Artiodactyla and Perissodactyla), Notoungulata; (4) Ungulata, PAEN; and (5) …
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A Preliminary Study of the Phylogenetic Relationships Among Species of the Genus Loxandrus (Coleoptera: Carabidae: Pterostichini)
Made available in DSpace on 2014-12-09T20:27:27Z (GMT). No. of bitstreams: 1 6915260.pdf: 5860052 bytes, checksum: 2765987f8b2d22674777dfff57ccf20e (MD5) Previous issue date: 1969
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New delimitations and phylogenetic relationships of Sabiceeae (Ixoroideae, Rubiaceae) and revision of the Neotropical species of Sabicea Aubl.
… tree (Chapter 6.2, Fig. 2) exhibits the close relationships within the genus under two highly resolved groups, and the monophyly of the six sampled species of Virectaria in correspondence to their morphological characters. The resolved clades of the combined ITS-rpoC1-trnT-F tree suggest the …
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Reassessment of Species Boundaries and Phylogenetic Relationships in the Desmodium ciliare complex (Fabaceae) Using Morphological and DNA Data
… and nuclear ITS DNA were utilized. Based on phylogenetic analysis using 73 ITS and 12 <em>trnL</em>–<em>trnL</em>-<em>F</em> sequences, there was not enough resolution to circumscribe the <em>Desmodium </em>species of Mississippi, including the <em>D</em>. <em>ciliare</em> complex itself. …
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