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

Physical and functional characterization of soluble protein antigen(s) produced by Renibacterium salmoninarum

Creator:: Turaga, Prasad S. D.
Abstract:: Renibacterium salmoninarum produces bacterial kidney disease (BKD) in salmonid fish. Soluble antigen(s) (SA) produced by the bacterium was characterized by physicochemical, functional and immunological methods. The molecular weight determination by SDS-PAGE analysis of SA yielded 14 different molecular weight species. Seven of these species were prominent, 57 kd protein being...
Resource Type:: Dissertation
Full Text:: salrnoninarum Redacted for Privacy Abstract approved: Dr. Stephen L. Kaattari Renibacterium salmoninarum

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

How Do Parasites Infect Salmon? Comparative Transcriptomics Reveal Myxozoan Adaptations for Parasitism

Creator:: Americus, Benjamin
Abstract:: The phylum Cnidaria contains three main branches: Anthozoa (corals, sea anemones) Medusozoa (jellyfish, hydra), and Endocnidozoa. This latter branch is characterized by parasitism and contains the microscopic fish-parasites Myxozoa. Myxozoa are highly simplified, consisting of only a few cell types, however they have retained the nematocyst stinging cells and complex...
Resource Type:: Dissertation
Full Text:: Stephen Atkinson); c: mature myxospores (from Stephen Atkinson); d: infected Tubifex oligochaete; e

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

Culturing uncultured environmental microorganisms

Creator:: Connon, Stephanie A.
Abstract:: Research on natural environments, over the last decade, is replete with microbial diversity studies that used culture-independent approaches. The cloning and sequencing of the 16S rRNA genes has been the driving force in the expansion of awareness about the great diversity of previously undiscovered microorganisms. Well-known uncultured groups of microorganisms...
Resource Type:: Dissertation
Full Text:: Redacted for privacy ACKNOWLEDGMENTS I thank Stephen J. Giovannoni and Lewis Semprini for their

Glucocorticoid regulation of salmonid B lymphocytes

Creator:: Tripp, Ralph A.
Abstract:: The in vitro effects of cortisol in regulating salmonid B cell functions were investigated. B cells at three distinct stages of differentiation were examined for cortisol sensitivity. B lymphocyte responses were examined 1) during the early stage of the precursor, 2) during the intermediate stage of differentiation associated with clonal...
Resource Type:: Dissertation
Full Text:: achievement of this degree. My sincere gratitude is extended to my major professor and friend Dr. Stephen L

ScholarsArchive@OSU

Investigation of Nematocyst Discharge in Parasitic Cnidarians (Myxozoa)

Physical and functional characterization of soluble protein antigen(s) produced by Renibacterium salmoninarum

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

How Do Parasites Infect Salmon? Comparative Transcriptomics Reveal Myxozoan Adaptations for Parasitism

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

Culturing uncultured environmental microorganisms

Glucocorticoid regulation of salmonid B lymphocytes

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search