Search Constraints

Start Over
Filtering by: Creator Stephenson, Jerry D. Remove constraint Creator: Stephenson, Jerry D. Degree Field Microbiology Remove constraint Degree Field: Microbiology Degree Level Doctoral Remove constraint Degree Level: Doctoral

Search Results

  • Photooxidative degradation of annual rye-grass straw to substrates enhancing rhodotorula mucilaginosa growth

    Creator:
    Park, Jerry Eugene
    Abstract:
    Annual ryegrass (Lolium multiflorum) is a major seed crop in the Willamette Valley of Oregon. Persistent crop diseases have necessitated annual field burning to protect future crops. This practice, while very effective for disease eradication, produces large quantities of air polluting smoke in the valley and a general wastage of...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF JERRY EUGENE PARK for the (Name

  • Structural and functional analysis of the 57 kDa protein produced by the fish pathogen, Renibacterium salmoninarum

    Creator:
    Wiens, Gregory D.
    Abstract:
    Little is known about the virulence factors of Renibacterium salmoninarum, the causative agent of salmonid bacterial kidney disease. The predominant protein produced by R. salmoninarum in broth culture or during infection is a 57/58 kDa protein (p57) which is associated with strain virulence. In this study monoclonal antibodies (MAbs) to...
    Resource Type:
    Dissertation
    Full Text:
    produced by the fish pathogen, Renibacterium salmoninarum AN ABSTRACT OF THE THESIS OF Gregory D. Wiens

  • Development of enteric protected vaccines for aquaculture

    Creator:
    Piganelli, Jon D.
    Abstract:
    At present all vaccines for fish are primarily delivered either by injection or immersion which introduces added stress and labor. A more attractive method of vaccine delivery is oral administration using an enteric protection system, Enteric Coated Antigen Microspheres (ECAMs), which can be utilized for a variety of antigenic forms....
    Resource Type:
    Dissertation

  • Genetic variation of chlamydial Inc proteins

    Creator:
    Viratyosin, Wasna
    Abstract:
    Genomic analysis is a new approach for the characterization and investigation of novel genes, gene clusters, the function of uncharacterized proteins, and genetic diversity in microorganisms. These approaches are important for the study of chlamydiae, a system in which several genomes have been sequenced but in which techniques for genetic...
    Resource Type:
    Dissertation
    Full Text:
    Chlamydial Inc Proteins Abstract approved: Daniel D. Genomic analysis is a new approach for the

  • The conserved biology of herpesvirus latency : a study in cyprinid herpesvirus 3

    Creator:
    Reed, Aimee N.
    Abstract:
    Cyprinid herpesvirus 3 (CyHV-3), commonly known as koi herpesvirus (KHV), is a member of the Alloherpesviridae and is a deadly pathogen for koi and common carp, Cyprinus carpio. It causes severe gill necrosis and nephritis, dermal ulceration and hemorrhage, and mass mortality of up to 100% of affected fish. Fish...
    Resource Type:
    Dissertation
    Full Text:
    dedication to my success: Dr. Andrew Buermeyer, Dr. Michael Kent, Dr. Malcolm Lowry, and Dr. Jerry Heidel

  • Impacts of multispecies parasitism on coho salmon (Oncorhynchus kisutch) in Oregon

    Creator:
    Ferguson, Jayde A.
    Abstract:
    Diseases caused by parasites are recognized as significant sources of mortality in wild fish populations. I assessed the impacts of multispecies parasitism on a threatened stock of juvenile coho salmon (Oncorhynchus kisutch). A crucial prerequisite to this research was proper identification of parasites, which can be difficult for species lacking...
    Resource Type:
    Dissertation
    Full Text:
    like to thank my graduate committee: Michael Kent, Carl Schreck, Kym Jacobson, and Jerry Heidel

  • Detection and transmission of Mycobacterium marinum and Mycobacterium chelonae in zebrafish (Danio rerio)

    Creator:
    Peterson, Tracy Shawn
    Abstract:
    Mycobacteriosis is a common disease of laboratory zebrafish (Danio rerio). Different infection patterns occur in zebrafish depending on mycobacterial species. Mycobacterium marinum and M. haemophilum produce virulent infections associated with high mortality, whereas M. chelonae is more wide spread and not associated with high mortality. Identification of mycobacterial infections to...
    Resource Type:
    Dissertation
    Full Text:
    my committee for their service and contributions to my work: Jerry Heidel, Christiane Löhr, Bruce

  • 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:
    Parasitism. Abstract approved: ______________________________________________________ Stephen D

  • Characterization of Sporulation and Germination Genes in Clostridium perfringens

    Creator:
    Talukdar, Prabhat Kumar
    Abstract:
    Clostridium perfringens is a Gram-positive, anaerobic, spore-forming bacterium that can produce as many as 17 different toxins and are responsible to cause a wide array of gastrointestinal (GI) and histotoxic diseases in humans and animals. As individual strains produce a subset of these toxins, C. perfringens strains can be classified...
    Resource Type:
    Dissertation
    Full Text:
    deeply grateful to the Head of the Department of Microbiology, Dr. Jerry Bartholomew and past Head, Dr

  • Pathogenic and molecular characterization of three closely related isolates of infectious pancreatic necrosis virus (IPNV)

    Creator:
    Bruslind, Linda D.
    Abstract:
    Three closely related isolates belonging to the A₁ serotype of infectious pancreatic necrosis virus (IPNV) were selected for comparison, to provide insight into the nature of variation in the virulence of IPN viruses. Brook trout fry (Salvelinus fontinalis) were experimentally infected with the three isolates by immersion. Cumulative mortalities over...
    Resource Type:
    Dissertation
    Full Text:
    Related Isolates of Infectious Pancreatic Necrosis Virus (IPNV) AN ABS1RACT OF THE THESIS OF Linda D