Index Catalog // ScholarsArchive@OSU

Investigation of Nematocyst Discharge in Parasitic Cnidarians (Myxozoa)

Creator:: Americus, Benjamin E.
Abstract:: Myxozoans are an enigmatic group of obligately parasitic, microscopic cnidarians. They diverged from their free-living relatives over 600 million years ago and have highly reduced genomes. However, they have retained nematocyst stinging cells which characterize the phylum Cnidaria. Free-living cnidarians utilize this cellular weaponry for defense and predation whereas the...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Stephen D. Atkinson Myxozoans are an enigmatic group of obligately parasitic, microscopic

Characterization of novel marine oligotrophic bacteria isolated from the Pacific Ocean : description of Marinivirgula fluito gen. nov., sp. nov., Marinivirgula obesa gen. nov., sp. nov. and Litincola parvulus gen. nov., sp. nov.

Creator:: Shin, Eun Jung
Abstract:: A new high-throughput culturing (HTC) method using a low nutrient heterotrophic medium (LNHM) has led to the isolation of many novel strains of oligotrophic bacteria from marine ecosystems. Four strains belonging to a single dade, HTCC2151, HTCC218OT, HTCC2178T and HTCC2188T, were isolated from the coast of Oregon by the HTC...
Resource Type:: Masters Thesis
Full Text:: , and thus it was proposed that strain HTCC2188T be placed in a separate genus in the 0M182 dade. G+C

An analysis of Sargasso Sea bacterioplankton diversity using 16S ribosomal RNA

Creator:: Britschgi, Theresa Baden
Abstract:: The objective of this project was to use ribosomal RNA genes, cloned from natural populations of Sargasso Sea bacterioplankton, as markers for picoplankton diversity. It is widely recognised that a majority of microorganisms have yet to be cultivated, and therefore much of extant microbial diversity remains unknown (50). The method...
Resource Type:: Masters Thesis
Full Text:: Bacterioplankton Diversity Using 16S Ribosomal RNA. Redacted for PrivacyAbstract Approved: Stephen J. Giovannoni

Bacterioplankton diversity in the lower ocean mixed layer

Creator:: Wright, Terah Diana
Resource Type:: Masters Thesis
Full Text:: in the Lower Ocean Mixed Layer. Abstract approved: Stephen J. Giovannoni Microorganisms play an

Phylogenetic characterization of the epibiotic bacteria associated with the hydrothermal vent polychaete Alvinella pompejana

Creator:: Haddad, Michael Alexander
Abstract:: Symbiotic relationships of bacteria with higher organisms are commonly observed in nature; however, the functional role of these relationships is only rarely understood. This is particularly evident in epibiotic bacterial associations in the marine environment where the bacteria are often a diverse ensemble of microorganisms, thus complicating the identification of...
Resource Type:: Masters Thesis
Full Text:: Polychaete Alvinella pornpejana. Abstract approved: Stephen J. Giovannoni Symbiotic relationships of

Disturbances in a marine bacterioplankton system drive community assembly towards niche-based processes

Creator:: Vergin, Kevin L.
Abstract:: Over 100 monthly bacterioplankton DNA samples, from each of the surface and 200 m depths at the Bermuda Atlantic Time-series Study (BATS) site, were analyzed for community assembly processes. Correlation networks, filtered for potential autocorrelation artifacts, were constructed for each depth. Network characteristics for the two depths were remarkably similar...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ Stephen J. Giovannoni

High resolution digital imaging of bacterial cells

Creator:: Siebold, William A.
Abstract:: The most abundant clone found in ribosomal RNA clone libraries obtained from the world's oceans belongs to the SAR11 phylogenetic group of environmental marine bacteria. Imaging and counting SAR11 bacterial cells in situ has been an important research objective for the past decade. This objective has been especially challenging due...
Resource Type:: Masters Thesis
Full Text:: Imaging of Bacterial Cells. Abstract approved: Stephen J. Giovannoni The most abundant clone found in

The immunological response of sheep to irradiated and non-irradiated infectious larvae of Haemonchus contortus (Rudolphi 1803) Cobb, 1898

Creator:: Stevens, James Orval
Abstract:: Ten helminth-free sheep were given two doses of 10,000, X-irradiated, H. contortus, third stage larvae 30 days apart. These animals and a group of ten non-vaccinated sheep were challenged with 50,000, normal, H. contortus, third stage larvae 60 days following the second vaccination. Antibody levels were measured in both groups...
Resource Type:: Masters Thesis
Full Text:: Redacted for Privacy Dr.7 K. Stepheñ filcher Ten helminth -free sheep were given two doses of 10, 000

Quantification of Osmolytes in the Sargasso Sea Surface Layer Water Column

Creator:: Muslin, Omran
Abstract:: Oceanic carbon cycling plays a major role in determining global atmospheric CO₂. A better understanding of dissolved organic matter and its constituents in the water column and how it affects marine carbon cycling is sought after. This study successfully measured osmolytes, low molecular zwitterionic compounds derived from amino acids, in...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Stephen J. Giovannoni Oceanic carbon cycling plays a major role in determining

Conserved properties in the metagenome of a large bacterioplankton population

Creator:: Wilhelm, Larry John
Abstract:: Candidatus Pelagibacter ubique is the first cultured representative of the SAR11 clade, a clade that is found throughout the oceans and accounts for approximately 25% of all bacterial cells [1]. It has a streamlined genome that is the smallest of any known free-living organism. In this study the complete genome...
Resource Type:: Masters Thesis
Full Text:: Population. Abstract Approved: _____________________________________ Stephen J. Giovannoni

ScholarsArchive@OSU

Investigation of Nematocyst Discharge in Parasitic Cnidarians (Myxozoa)

Characterization of novel marine oligotrophic bacteria isolated from the Pacific Ocean : description of Marinivirgula fluito gen. nov., sp. nov., Marinivirgula obesa gen. nov., sp. nov. and Litincola parvulus gen. nov., sp. nov.

An analysis of Sargasso Sea bacterioplankton diversity using 16S ribosomal RNA

Bacterioplankton diversity in the lower ocean mixed layer

Phylogenetic characterization of the epibiotic bacteria associated with the hydrothermal vent polychaete Alvinella pompejana

Disturbances in a marine bacterioplankton system drive community assembly towards niche-based processes

High resolution digital imaging of bacterial cells

The immunological response of sheep to irradiated and non-irradiated infectious larvae of Haemonchus contortus (Rudolphi 1803) Cobb, 1898

Quantification of Osmolytes in the Sargasso Sea Surface Layer Water Column

Conserved properties in the metagenome of a large bacterioplankton population

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