Index Catalog // ScholarsArchive@OSU

Modeling abiotic influences on disease dynamics for the complex life cycle of the myxozoan parasite Ceratomyxa shasta

Creator:: Ray, Robert Adam
Abstract:: Most parasites and their hosts live in a balance within their environment; however a disease outbreak can occur when either the parasite, host, or environment, are perturbed. Myxozoan parasites are associated with a wide variety of cultured and wild fish populations. Most myxozoans are relatively benign to their vertebrate host;...
Resource Type:: Dissertation
Full Text:: . AN ABSTRACT OF THE DISSERTATION OF Robert Adam Ray for the degree of Doctor of Philosophy in

Mortality threshold for juvenile Chinook salmon (Oncorhynchus tshawytscha) in an epidemiological model of Ceratomyxa shasta

Creator:: Ray, R. Adam
Abstract:: The myxozoan parasite, Ceratomyxa shasta, is the most significant pathogen of juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Klamath River, CA, USA. This parasite requires two hosts - a freshwater polychaete (Manayunkia speciosa) and a salmonid - to complete its life cycle. The complex life cycle and large geographic area...
Resource Type:: Masters Thesis
Full Text:: THESIS OF R. Adam Ray for the degree of Master of Science in Fisheries Science presented on November

Ecology and applications of cutaneous mechanisms of resistance to amphibian chytridiomycosis

Creator:: Nebergall, Emily E.
Abstract:: Amphibian biodiversity is in rapid global decline, due in part to the fungal disease chytridiomycosis, caused by Batrachochytrium dendrobatidis (Bd). Susceptibility to Bd and chytridiomycosis varies between species and populations. Skin peptides and symbiotic skin bacteria appear to be important mechanisms of Bd resistance. However, not much is known about...
Resource Type:: Masters Thesis
Full Text:: : Jerri L. Bartholomew Amphibian biodiversity is in rapid global decline, due in part to the fungal

Transmission and Persistence of Ceratomyxa shasta, Transmission and Persistence of Ceratomyxa shasta in Chinook Salmon

Creator:: Wong, Peter, Hurst, Charlene N., Ray, R. Adam, and Bartholomew, Jerri L.
Abstract:: Native to the Pacific Northwest, Ceratomyxashastais a myxosporeanparasite that infects wild and cultivated salmon and has a significance impact on its population in the Klamath River basin. The study suggests that the transmission of mixed genotypes of the parasite are common in Chinook salmon but the age of the fish...
Resource Type:: Poster and Presentation

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:: , Peter Wong, Sascha L. Hallett, R. Adam Ray and Jerri L. Bartholomew

Climate warming effects on the life cycle of the parasite Ceratomyxa shasta in salmon of the Pacific Northwest

Creator:: Chiaramonte, Luciano V.
Abstract:: Aquatic ecosystems continue to be increasingly affected by climate warming. For salmonids in the Pacific Northwest of North America, increasing temperatures pose tighter thermal constraints on their habitat use as well as aspects of their individual performance, such as disease resistance. This thesis examines the effect of temperature on the...
Resource Type:: Masters Thesis
Full Text:: approved: Jerri L. Bartholomew Aquatic ecosystems continue to be increasingly affected by climate

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:: : Jerri L. Bartholomew Ceratomyxa shasta is a myxozoan parasite that infects salmonid fishes

Ceratomyxa shasta-related concerns for reintroduced anadromous salmonids into the Upper Klamath Basin, CA-OR, USA

Creator:: Hurst, Charlene N.
Abstract:: The myxozoan parasite of salmonids, Ceratomyxa shasta, is established throughout the Klamath River, CA-OR, with high parasite densities below the series of dams and above the dams (upper basin) in the northernmost tributary, the Williamson River (WMR). Two objectives were designed to address concerns about C. shasta effects on reintroduced...
Resource Type:: Masters Thesis
Full Text:: :  Jerri L. Bartholomew The myxozoan parasite of salmonids, Ceratomyxa shasta, is established

Re-examining Ceratomyxa shasta in the Pacific Northwest

Creator:: Stinson, Matthew E. T.
Abstract:: Ceratomyxa shasta infects salmonids in the Pacific Northwest (PNW) of North America, occasionally causing losses in wild and captive populations. Host-specific parasite genotypes (O, I, II, III) were previously characterized molecularly using markers in the ribosomal DNA and phenotypically by type host in the Klamath River, CA/OR. This thesis sough...
Resource Type:: Masters Thesis
Full Text:: Northwest Abstract approved: _____________________________________________________ Jerri L

Distribution and coinfection of microparasites and macroparasites in juvenile salmonids in three upper Willamette River tributaries

Creator:: Roon, Sean Robert
Abstract:: Wild fish populations are typically infected with a variety of micro- and macroparasites that may affect fitness and survival, however, there is little published information on parasite distribution in wild juvenile salmonids in three upper tributaries of the Willamette River, OR. The objectives of this survey were to document (1)...
Resource Type:: Masters Thesis
Full Text:: Juvenile Salmonids in Three Upper Willamette River Tributaries. Abstract approved: Jerri L

ScholarsArchive@OSU

Modeling abiotic influences on disease dynamics for the complex life cycle of the myxozoan parasite Ceratomyxa shasta

Mortality threshold for juvenile Chinook salmon (Oncorhynchus tshawytscha) in an epidemiological model of Ceratomyxa shasta

Ecology and applications of cutaneous mechanisms of resistance to amphibian chytridiomycosis

Transmission and Persistence of Ceratomyxa shasta, Transmission and Persistence of Ceratomyxa shasta in Chinook Salmon

The ecology of parasite interactions within Chinook salmon

Climate warming effects on the life cycle of the parasite Ceratomyxa shasta in salmon of the Pacific Northwest

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

Ceratomyxa shasta-related concerns for reintroduced anadromous salmonids into the Upper Klamath Basin, CA-OR, USA

Re-examining Ceratomyxa shasta in the Pacific Northwest

Distribution and coinfection of microparasites and macroparasites in juvenile salmonids in three upper Willamette River tributaries

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Conference Name

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search