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Microsporidiosis in zebrafish research facilities

Creator:: Sanders, Justin L., Watral, Virginia, and Kent, Michael L.
Abstract:: Pseudoloma neurophilia (Microsporidia) is the most common pathogen detected in zebrafish (Danio rerio) from research facilities. The parasite infects the central nervous system and muscle, and may be associated with emaciation and skeletal deformities. However, many fish exhibit subclinical infections. Another microsporidium, Pleistophora hyphessobryconis, has recently been detected in a...
Resource Type:: Article
Full Text:: Justin L. Sanders, B.S., Department of Microbiology, Oregon State University, Corvallis, OR 5 Virginia

Ichthyosporidium weissii n. sp. (Microsporidia) Infecting the Arrow Goby (Clevelandia ios)

Creator:: Sanders, Justin, Myers, Mark S., Tomanek, Lars, Call, Ann, Takvorian, Peter M., and Kent, Michael L.
Abstract:: Gonadal infections by a novel microsporidium were discovered in 34% (13/38) of arrow gobies, Clevelandia ios, sampled over a 3-yr period from Morro Bay Marina in Morro Bay, California. Gonadal tumors had been reported in arrow gobies from this geographic area. The infected gonads, found primarily in females, typically appeared...
Resource Type:: Article
Full Text:: CALI,d PETER M. TAKVORIANd,e and MICHAEL L. KENTa aDepartment of Microbiology, Oregon State

Toxicity of chlorine to zebrafish embryos

Creator:: Kent, Michael L., Buchner, Cari, Barton, Carrie, and Tanguay, Robert L.
Abstract:: Surface disinfection of fertilized fish eggs is widely used in aquaculture to reduce extraovum pathogens that may be released from brood fish during spawning, and this is routinely used in zebrafish (Danio rerio) research laboratories. Most laboratories use approximately 25-50 ppm unbuffered chlorine solution for 5-10 min. Treatment of embryos...
Resource Type:: Article
Full Text:: , Carrie Barton2 and Robert L. Tanguay2 3 1Department of Microbiology, Oregon State University, Corvallis

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:: al.Sensitivity and specificity of histology with salmon pathogens From the Departments of Microbiology (Kent

Comparison of fixatives and fixation time for PCR detection of Mycobacterium in zebrafish Danio rerio

Creator:: Peterson, Tracy S., Kent, Michael L., Ferguson, Jayde A., Watral, Virginia G., and Whipps, Christopher M.
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 widespread and is not associated with high mortality. Identification of mycobacterial infections to...
Resource Type:: Article
Full Text:: . Kent1,2, Jayde A. Ferguson4, Virginia G. Watral1, Christopher M. Whipps3 1Department of Microbiology

Mortality of Coho Salmon (Oncorhynchus kisutch) Associated with Burdens of Multiple Parasite Species

Creator:: Ferguson, Jayde, Koketsu, Wataru, Ninomiya, Ikuo, Rossignol, Philippe A., Jacobson, Kym C., and Kent, Michael L.
Abstract:: Multiple analytical techniques were used to evaluate the impact of multiple parasite species on the mortality of threatened juvenile coho salmon (Oncorhynchus kisutch) from the West Fork Smith River, Oregon, USA. We also proposed a novel parsimonious mathematical representation of macroparasite distribution, congestion rate, which i) is easier to use...
Resource Type:: Article
Full Text:: Center, Newport, Oregon Kent, Michael L. Department of Microbiology, Oregon State University

H. pylori virulence factor CagA increases intestinal cell proliferation by Wnt pathway activation in a transgenic zebrafish model

Creator:: Neal, James T., Peterson, Tracy S., Kent, Michael L., and Guillemin, Karen
Abstract:: Infection with Helicobacter pylori is a major risk factor for the development of gastric cancer, and infection with strains carrying the virulence factor CagA significantly increases this risk. To investigate the mechanisms by which CagA promotes carcinogenesis, we generated transgenic zebrafish expressing CagA ubiquitously or in the anterior intestine. Transgenic...
Resource Type:: Article
Full Text:: 1Institute of Molecular Biology, University of Oregon, Eugene, OR 97403, USA 2Department of Microbiology

Apophallus microsoma N. SP. from Chicks Infected with Metacercariae from Coho Salmon (Oncorhynchus kisutch ) and Review of the Taxonomy and Pathology of the Genus Apophallus (Heterophyidae)

Creator:: Ferguson, Jayde A., Locke, Sean A., Font, William F., Steinauer, Michelle L., Marcogliese, David J., Cojocaru, Calin D., and Kent, Michael L.
Abstract:: Metacercariae of an unidentified species of Apophallus Luhe, 1909 are associated with overwinter mortality in coho salmon, Oncorhynchus kisutch (Walbaum, 1792), in the West Fork Smith River, Oregon. We infected chicks with these metacercariae in order to identify the species. The average size of adult worms was 197 x 57...
Resource Type:: Article
Full Text:: §, David J. Marcogliese†, Calin D. Cojocarujj, and Michael L. Kent Department of Microbiology, Oregon

Phylogeny of fish-infecting Calyptospora species (Apicomplexa: Eimeriorina)

Creator:: Whipps, Christopher M., Fournie, John W., Morrison, David A., Azevedo, Carlos, Matos, Edilson, Thebo, Per, and Kent, Michael L.
Abstract:: There are numerous species of apicomplexans that infect poikilothermic vertebrates, such as fishes, and possess unique morphological features that provide insight into the evolution of this important phylum of parasites. Here, the relationship of the fish-infecting Calyptospora species to other coccidians was investigated based on DNA sequence analysis. Genetic data...
Resource Type:: Article
Full Text:: , Belém, PA, Brazil M. L. Kent Center for Fish Disease Research, Department of Microbiology, Oregon State

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
Full Text:: -Hilaire�, Tracy S. Peterson, Kenneth J. Rodnick�, and Michael L. Kent Department of Microbiology, Oregon

ScholarsArchive@OSU

Microsporidiosis in zebrafish research facilities

Ichthyosporidium weissii n. sp. (Microsporidia) Infecting the Arrow Goby (Clevelandia ios)

Toxicity of chlorine to zebrafish embryos

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

Comparison of fixatives and fixation time for PCR detection of Mycobacterium in zebrafish Danio rerio

Mortality of Coho Salmon (Oncorhynchus kisutch) Associated with Burdens of Multiple Parasite Species

H. pylori virulence factor CagA increases intestinal cell proliferation by Wnt pathway activation in a transgenic zebrafish model

Apophallus microsoma N. SP. from Chicks Infected with Metacercariae from Coho Salmon (Oncorhynchus kisutch ) and Review of the Taxonomy and Pathology of the Genus Apophallus (Heterophyidae)

Phylogeny of fish-infecting Calyptospora species (Apicomplexa: Eimeriorina)

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

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