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 22 for “"cytochrome oxidase I"”.
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A preliminary study of genetic variation within and among populations of Diaptomus leptopus (Copepoda: Calanoida) : a DNA sequence analysis of the Mitochondrial Cytochrome Oxidase I gene
… DNA sequence analysis of the mitochondrial cytochrome oxidase I gene may also be of use to study population structure. Thus, a study investigating the genetic variation within and among seven populations, distributed from Quebec to New York, of the freshwater copepod Diaptomus leptopus was …
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Reorganization of Mitochondrial Genomes of Cms-S Maize Associated With Reversion to Fertility and Changes in Nuclear Background (S1 - S2 Plasmids, Cytochrome Oxidase I and Ii, Apocytochrome B)
The cms-S type of cytoplasmic male sterility in maize is characterized by the presence of linear mitochondrial plasmid-like DNAs, S1 and S2. Sequences homologous to S1 and S2 are also found in the main mitochondrial genomes of cms-S and normal fertile lines of corn.
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Mating Habits, Dispersal and Postglacial Range Expansion of Nigronia Serricornis (Say) (Megaloptera: Corydalidae)
… Using sequence data from a 630-base fragment of cytochrome oxidase I (COI), nested clade phylogeographical analysis (NCPA) was performed to determine the patterns of genetic diversity and the effects of post-glacial range expansion (PGRE). Haplotype diversity was significantly negatively …
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Sample Collection and DNA Extraction Methods for Environmental DNA Metabarcoding in Headwater Streams
… the ribosomal small subunit 18 S (18s) and the cytochrome oxidase I (COI) gene regions. The 18s sequence data is non-reportable due to lack of sequence quality, and MoBio's PowerWater did not yield DNA suitable concentrations. CTAB and DNeasy extractions yielded successful PCR reactions and …
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Metapopulation dynamics of the softshell clam, Mya arenaria
… of M. arenaria using the mitochondrial gene, cytochrome oxidase I (COI). I found minimal variability across all populations sampled, suggesting a recent population expansion in the Northwest Atlantic. Finally, I employed theoretical approaches to understand patch dynamics in a two-patch …
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Phylogenetic studies of the Madagascan freshwater crabs (Potamoidea, Potamonautidae, Deckeniinae)
… a partial mitochondrial gene fragment (600 bp), cytochrome oxidase I (COI). Phylogenetic analyses, MP, ML, and BI, yielded 36 most parsimonious trees and recovered topologies with several highly-supported clades with similar topologies. The MP 50% majority-rule strict consensus tree was selected …
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Metapopulation dynamics of the softshell clam, Mya arenaria
… of M. arenaria using the mitochondrial gene, cytochrome oxidase I (COI). I found minimal variability across all populations sampled, suggesting a recent population expansion in the Northwest Atlantic. Finally, I employed theoretical approaches to understand patch dynamics in a two-patch …
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Studies on Species of the Aphid Genus Cinara on Pinus Edulis and Pinus Monophylla
… branches, shoots, etc.). In Chapter 1, using cytochrome oxidase I DNA sequences, I performed molecular phylogenetic analysis of Cinara species feeding on pinyon pines and determined that switching hosts played a key role in the speciation of the genus. This was reflected in the fact that …
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Range-wide Distribution and Genetic Structure of Acroneuria frisoni Stark and Brown, 1991 (Plecoptera; Perlidae): Tools for Reintroduction to Central Illinois
… reintroduction success. The mitochondrial gene Cytochrome Oxidase I (COI) was used to determine the Pleistocene glacial refugia, northward recolonization routes and the role of contemporary and ancient drainages in shaping A. frisoni genetic structure. Data suggest that there are at least three …
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Phylogeograpy of Aphanicercella cassida (Plecoptera : Notonemourida) : cryptic speciation?
… are poor fliers. Molecular analysis of the cytochrome oxidase I gene in the mitochondrial DNA was analysed to see if any genetic differentiation was occurring inspite of the morphological homogeneity. A 557 base pair region was compared across three populations of A. cassida one in …
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A Phylogenetic Assessment of Thereva Latreille (Insecta: Diptera: Therevidae)
… Thereva using two mitochondrial genes (16S and cytochrome oxidase I) and 33 morphological characters; these analyses included six outgroups and 37 Thereva ingroup species. The position of two major clades of Nearctic species and the position of a Far East Palaearctic species provided evidence …
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Exploring the Evolution and Taxonomy of Evaniidae (Hymenoptera), a Charismatic and Enigmatic Family of Insects
… fragments of the mitochondrial 16S rRNA and cytochrome oxidase I genes and the nuclear 28S rRNA gene for 60 exemplar taxa. After alignment of the ribosomal RNA sequences to predicted secondary structure, relationships between genera are estimated using three methods: unweighted parsimony, …
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A contribution to species delimitation and taxonomy of North American Entomobrya (Collembola: Entomobryidae)
… species, a phylogenetic analysis of the complete cytochrome oxidase I gene (COI) was performed for 11 species of North American Entomobrya, including 13 color forms representing 4 morphospecies with different levels of color pattern variation: Entomobrya assuta, E. clitellaria, E. ligata, and E. …
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Testing the utility of the consortium for the barcoding of life's two 'agreed upon' plant DNA barcodes, matK and rbcL
… the zoological community has agreed that cytochrome oxidase I subunit 1 (COI), a mitochondrial gene region, will serve as the barcode region for all animal taxa. Due to oftentimes complicated evolutionary histories of plants, the plant barcoding community has had a much harder time …
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Genetic diversity and structure of calanoid copepods: Molecular evolutionary patterns in coastal estuaries (Acartia tonsa) and the open ocean (Calanus spp)
… on DNA sequence variation for the mitochondrial cytochrome oxidase I (mtCOI) gene, significant population structure was observed between all pairs of estuarine populations (phi ST > 0.9, p < 0.0001), except for those of two neighboring estuaries, Buzzards Bay and Narragansett Bay. Based on …
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Aspects of the biology of Mya arenaria and Ensis spp. (Mollusca; Bivalvia) in the Irish Sea and adjacent areas
… for genetic variation using both mitochondrial (cytochrome oxidase I (COI) and 16S ribosomal RNA genes) and nuclear markers (10 microsatellite loci). Both mitochondrial CO1 and all nuclear markers showed reduced levels of variation in certain European samples, with significant differences in …
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Phylogeography of the Asia Ii and the Americas Major Clades of the Bemisia Tabaci Sibling Species Group
… clades using the 3' half of the mitochondrial cytochrome oxidase I gene. B. tabaci is the only vector of begomoviruses; it transmits the complex of viruses that cause the cotton leaf curl disease, which has rapidly spread from Pakistan to the Philippines, at southeast of Asia, in the last …
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Contribution to the systematics of the genus Aphis (Hemiptera:Aphididae)
… using bootstrap Maximum Parsimony and MrBayes of cytochrome oxidase I (COI), nuclear elongation factor (EF1-∝) and primary endosymbiont Buchnera 16S (Buch 16S) were not congruent. MrBayes strongly supported most of terminal nodes of the phylogenetic trees. The phylogeny was strongly supported by …
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Hiding in plain sight: unveiling cryptic diversity and patterns in bumble bees
… twelve microsatellite loci and a fragment of the cytochrome oxidase I gene to conduct an in-depth population genetic and phylogenetic study of the group across its widespread distribution. I also explore the use of wing geometric morphometrics to delineate species within this taxon. This group …
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