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Assessing disease impacts of hatcheries on downstream salmonids in the Willamette River Basin, Oregon

Creator:: Jakaitis, Michelle
Abstract:: Hatcheries are often perceived as a source of pathogen amplification, potentially increasing disease risk to free-ranging populations; at the same time, free-ranging fishes may introduce pathogens into hatcheries through untreated water sources. Many pathogens exist naturally within the environment (with the exception of introduced pathogens) and the presence of a...
Resource Type:: Masters Thesis
Full Text:: .................................................................................. 62 Disease risks at McKenzie River Hatchery

Sensitivity and specificity of histology for diagnoses of four common pathogens and detection of nontarget pathogens in adult Chinook salmon (Oncorhynchus tshawytscha) in fresh water

Creator:: Kent, Michael L., Benda, Susan, St-Hilaire, Sophie, and Schreck, Carl B.
Abstract:: Histology is often underutilized in aquatic animal disease screening and diagnostics. The agreement between histological classifications of infection and results using diagnostic testing from the American Fisheries Society's Blue Book was conducted with 4 common salmon pathogens: Aeromonas salmonicida, Renibacterium salmoninarum, Ceratomyxa shasta, and Nanophyetus salmincola. Adult Chinook salmon (Oncorhynchus...
Resource Type:: Article
Full Text:: . Diagnostic methods described in the American Fisheries Society Fish Health Section (AFS-FHS) Blue Book1

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:: Bay, and lower Talarik Creek, Lake Iliamna (see AFS-FHS 2010). Here I provide brief descriptions of

Evidence for molecular diversity of Piscirickettsia salmonis

Creator:: Mauel, Michael J.
Resource Type:: Dissertation
Full Text:: (Continued) Page Introduction 55 Materials and Methods 56 Results 62 Discussion 67

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:: ……...……………………….…..62 Figure 3.5: Temporal abundance of Ceratonova shasta in water samples collected from lower basin

Survey of Parasites In Threatened Stocks of Coho Salmon (Oncorhynchus kisutch) In Oregon By Examination of Wet Tissues and Histology

Creator:: Ferguson, Jayde A., St-Hilaire, Sophie, Peterson, Tracy S., Rodnick, Kenneth J., and Kent, Michael L.
Abstract:: We are conducting studies on the impacts of parasites on Oregon coastal coho salmon (Oncorhynchus kistuch). An essential first step is documenting the geographic distribution of infections, which may be accomplished by using different methods for parasite detection. Thus, the objectives of the current study were to (1) identify parasite...
Resource Type:: Article

Characterization of a rhabdovirus isolated from the snakehead fish (Ophicephalus striatus)

Creator:: Kasornchandra, Jiraporn
Resource Type:: Dissertation
Full Text:: Acknowledgements 61 Literature Cited 62 Characteristics of Three Rhabdoviruses Isolated from Snakehead Fish

Risk assessment : introduction and establishment of Myxobolus cerebralis in the Deschutes River Basin, Oregon, USA

Creator:: Zielinski, Christopher
Abstract:: A plan for the reestablishment of anadromous salmonid stocks into waters above the Pelton Round Butte Hydroelectric Project (PRB) located on the Deschutes River, Oregon has been under development since 1996. The PRB complex, starting at river kilometer (Rkm) 103, blocks the further upstream migration of anadromous salmonids into upper...
Resource Type:: Masters Thesis

Distribution and epizootiology of infectious pancreatic necrosis and infectious hematopoietic necrosis of salmonid fishes in Oregon

Creator:: Mulcahy, Daniel M.
Abstract:: The distribution in Oregon of two viruses affecting salmonid fishes was determined by examination of hatchery and feral fish. Infectious pancreatic necrosis virus (IPNV) was isolated from fish at the Oregon Department of Fish and Wildlife Research Laboratory, Corvallis, Roaring River, Fort Klamath, and Wizard Falls Hatcheries. Fish collected at...
Resource Type:: Dissertation
Full Text:: , AFS, 1974) for taking samples were followed. Three types of samples were taken: viscera, ovarian

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

ScholarsArchive@OSU

Assessing disease impacts of hatcheries on downstream salmonids in the Willamette River Basin, Oregon

Sensitivity and specificity of histology for diagnoses of four common pathogens and detection of nontarget pathogens in adult Chinook salmon (Oncorhynchus tshawytscha) in fresh water

Re-examining Ceratomyxa shasta in the Pacific Northwest

Evidence for molecular diversity of Piscirickettsia salmonis

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

Survey of Parasites In Threatened Stocks of Coho Salmon (Oncorhynchus kisutch) In Oregon By Examination of Wet Tissues and Histology

Characterization of a rhabdovirus isolated from the snakehead fish (Ophicephalus striatus)

Risk assessment : introduction and establishment of Myxobolus cerebralis in the Deschutes River Basin, Oregon, USA

Distribution and epizootiology of infectious pancreatic necrosis and infectious hematopoietic necrosis of salmonid fishes in Oregon

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

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