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Spatiotemporal Distribution of Ceratonova shasta and its Genotypes in the Deschutes River Basin

Creator:: Hubbard, Kalyn M.
Abstract:: The waterborne, myxozoan parasite Ceratonova shasta is endemic to the Pacific Northwest and can be lethal to its secondary salmonid host, including the culturally, economically, and recreationally important spring Chinook salmon (Oncorhynchus tshawytscha) of the Deschutes River, OR. Previously described genotypes of C. shasta exhibit specificity with their salmonid hosts....
Resource Type:: Masters Thesis
Full Text:: appreciation to my committee members Sascha Hallett, Jerri Bartholomew, Jonathan Armstrong, and Jovana

Density of the Waterborne Parasite Ceratomyxa shasta and Its Biological Effects on Salmon

Creator:: Hallett, Sascha L., Ray, R. Adam, Hurst, Charlene N., Holt, Richard A., Buckles, Gerri R., Atkinson, Stephen D., and Bartholomew, Jerri L.
Abstract:: The myxozoan parasite Ceratomyxa shasta is a significant pathogen of juvenile salmonids in the Pacific Northwest of North America and is limiting recovery of Chinook (Oncorhynchus tshawytscha) and coho (O. kisutch) salmon populations in the Klamath River. We conducted a 5-year monitoring program that comprised concurrent sentinel fish exposures and...
Resource Type:: Article
Full Text:: Its Biological Effects on Salmon Sascha L. Hallett,a R. Adam Ray,b Charlene N. Hurst,a Richard A

Molecular Analysis of Environmental Water Samples as a Monitoring Method for the Fish Parasite Ichthyophthirius multifiliis

Creator:: Howell, Claire K.
Abstract:: Parasites are ubiquitous members of ecological communities, capable of contributing to the decline of vulnerable populations. Therefore, monitoring parasite level is a critical component for host management. Molecular tools, such as quantitative polymerase chain reaction (qPCR), can be valuable additions to monitoring protocols that assess parasitic disease risk to hosts....
Resource Type:: Masters Thesis
Full Text:: Chemistry 55(4):611–622. Chiaramonte, L. V., R. A. Ray, R. A. Corum, T. Soto, S. L. Hallett, and J. L

Factors affecting the Ceratomyxa shasta infectious cycle and transmission between polychaete and salmonid hosts

Creator:: Bjork, Sarah J.
Abstract:: Ceratomyxa shasta is a myxozoan parasite that infects salmonid fishes causing the disease ceratomyxosis that is characterized by severe hemorrhage and necrosis of the intestine and death of the fish host. Ceratomyxa shasta is endemic to the Pacific Northwestern United States and Canada, where epizootics are reported for both wild...
Resource Type:: Dissertation
Full Text:: Salmonid Hosts AN ABSTRACT OF THE DISSERTATION OF Sarah J. Bjork for the degree of Doctor of

Isolation and characterization of a new reovirus from chum salmon (Oncorhynchus keta)

Creator:: Winton, James R.
Abstract:: This report describes the isolation of a new virus from adult chum salmon (Oncorhynchus keta) returning to the Tokushibetsu Hatchery, Hokkaido, Japan. The agent was isolated in the CHSE-214 cell line derived from chinook salmon (Oncorhynchus tshawytscha). The virus replicated in selected fish cell lines incubated between 10 and 20°C...
Resource Type:: Dissertation
Full Text:: . To Dr. J. L. Fryer, whose teaching stimulated my initial interest in microbiology and who, as my

Expanding Diagnostic Assays for Pseudoloma neurophilia & Description of the Progression of Infection in Adult Zebrafish Populations

Creator:: Schuster, Corbin J.
Abstract:: Pseudoloma neurophilia is the most common pathogen reported in zebrafish (Danio rerio) research facilities and is an important threat to the zebrafish model. This microsporidian parasite can cause clinical disease, but more importantly is a causative agent of non-protocol induced variation in research. Studies utilizing infected zebrafish, could potentially confound...
Resource Type:: Dissertation
Full Text:: THE DISSERTATION OF Corbin J. Schuster for the degree of Doctor of Philosophy in Microbiology

‘Who’s who’ in renal sphaerosporids (Bivalvulida: Myxozoa) from common carp, Prussian carp and goldfish – molecular identification of cryptic species, blood stages and new members of Sphaerospora sensu stricto

Creator:: Holzer, Astrid Sibylle, Bartosova, P., Peckova, H., Tyml, T., Atkinson, S., Bartholomew, J., Sipos, D., Eszterbauer, E., and Dykova, I.
Abstract:: Myxozoans are a group of diverse, spore-forming metazoan microparasites bound to aquatic environments. Sphaerospora dykovae (previously S. renicola) causes renal sphaerosporosis and acute swim bladder inflammation (SBI) in juvenile Cyprinus carpio carpio, in central Europe. A morphologically similar species with comparably low pathogenicity, S. angulata has been described from C....
Resource Type:: Article
Full Text:: . BARTOŠOVÁ1, H. PECKOVÁ1, T. TYML1,2, S. ATKINSON3, J. BARTHOLOMEW3, D. SIPOS4, E. ESZTERBAUER4 and I

Deschutes River Salmonid Risk of Enteronecrosis in a Changing Climate

Creator:: Yusova, Sofiya
Abstract:: Ceratonova shasta is an obligate endoparasite of salmonid fish that is endemic to the Pacific Northwest of North America. The parasite has a complicated lifecycle with two distinct spore stages and two obligate hosts, a salmonid and a freshwater annelid. Myxospores released from infected salmonid hosts, infect Manayunkia occidentalis (freshwater...
Resource Type:: Masters Thesis
Full Text:: thanks to Dr. Sascha Hallett for mentoring and feedback; to Dr. Stephen Atkinson and Dr. Kristin

The ecology of parasite interactions within Chinook salmon

Creator:: Hurst, Charlene N.
Abstract:: The within-host interactions that can occur as a result of mixed infections in wildlife likely influence the outcome of an infection. We investigated the infection frequency and outcome as well as the potential mechanisms regulating mixed infections with two Ceratonova shasta genotypes within the Chinook salmon host. Previous research in...
Resource Type:: Dissertation
Full Text:: design and statistics as well as samples from both 2008 and 2009. Dr. Sascha Hallett provided oversight

Supplemental Description of Myxobolus squamalis (Myxozoa)

Creator:: Polley, Tamsen M., Atkinson, Stephen D., Jones, Gerald R., and Bartholomew, Jerri L.
Abstract:: Abstract: Myxobolus squamalis is a myxozoan skin parasite first reported from rainbow trout (Oncorhynchus mykiss). Identification of the parasite based on myxospore morphology is unreliable because M. squamalis is similar to several other myxobolids that share host species and geographic ranges. The only ssrRNA gene sequence available for M. squamalis...
Resource Type:: Article
Full Text:: J. Parasitol., 99(4), 2013, pp. 725–728 � American Society of

ScholarsArchive@OSU

Spatiotemporal Distribution of Ceratonova shasta and its Genotypes in the Deschutes River Basin

Density of the Waterborne Parasite Ceratomyxa shasta and Its Biological Effects on Salmon

Molecular Analysis of Environmental Water Samples as a Monitoring Method for the Fish Parasite Ichthyophthirius multifiliis

Factors affecting the Ceratomyxa shasta infectious cycle and transmission between polychaete and salmonid hosts

Isolation and characterization of a new reovirus from chum salmon (Oncorhynchus keta)

Expanding Diagnostic Assays for Pseudoloma neurophilia & Description of the Progression of Infection in Adult Zebrafish Populations

‘Who’s who’ in renal sphaerosporids (Bivalvulida: Myxozoa) from common carp, Prussian carp and goldfish – molecular identification of cryptic species, blood stages and new members of Sphaerospora sensu stricto

Deschutes River Salmonid Risk of Enteronecrosis in a Changing Climate

The ecology of parasite interactions within Chinook salmon

Supplemental Description of Myxobolus squamalis (Myxozoa)

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