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Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

Creator:: Villeneuve, Daniel L., Curtis, Lawrence R., Jenkins, Jeffrey J., Warner, Kara E., Tilton, Fred A., Kent, Michael L., Watral, Virginia G., Cunningham, Michael E., Markle, Douglas F., Sethajintanin, Doolalai, Krissanakriangkrai, Oraphin, Johnson, Eugene R., Grove, Robert Allan, Anderson, Kim A., Oregon State University. Department of Microbiology, Oregon State University. Department of Environmental and Molecular Toxicology, Oregon State University. Department of Fisheries and Wildlife, and Institute for Natural Resources
Abstract:: The Willamette River, one of only 14 American Heritage Rivers, flows through the most densely populated and agriculturally productive region of Oregon. Previous biological monitoring of Willamette River fish detected elevated frequencies of skeletal deformities in fish from certain areas of the lower (NP [NP], rivermile [RM] 26-55) and middle...
Resource Type:: Technical Report
Full Text:: Report: Environmental Stresses and Skeletal Deformities in Fish from the Willamette River, Oregon

Growth of lactococci relative to antibiotic and quaternary ammonium compounds

Creator:: Valladao, Marilin
Abstract:: The work presented in this thesis is concerned with the effect of several antibiotics and quaternary ammonium sanitizers upon growth of lactic acid bacteria. Section I reports the purification of beta-lactamase from Lactococcus cremoris PR-108, by ion exchange chromatography, using the chromogenic substrate pyridine-2-azo-p-dimethylaniline (PADAC) as the enzymatic indicator. Section...
Resource Type:: Masters Thesis
Full Text:: solutions of penicillin in milk heated to 100°C (212°F), detected no destruction within 15 minutes, but

Guanosine tetrophosphate accumulation in Rhizobium meliloti

Creator:: Saedi, Mohammad Saeed
Abstract:: The effect of carbon source, nitrogen source, and amino acid starvation on the accumulation of guanosine tetraphosphate.and RNAand protein synthesis in Rhizobium meliloti are described in this report. An accumulation of ppGpp and a decrease in the rate of RNA and protein synthesis were observed in response to nitrogen source...
Resource Type:: Masters Thesis
Full Text:: synthesis in Rhizobium meliloti are described in this report. An accumulation of ppGpp and a decrease in

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:: find no well-identified report of M. squamalis from Chinook salmon. Our complementary morphological

The genome of a baculovirus isolated from Hemileuca sp. encodes a serpin ortholog

Creator:: Rohrmann, George F., Erlandson, Martin A., and Theilmann, David A.
Abstract:: The genome sequence of a baculovirus from Hemileuca sp. was determined. The genome is 140,633 kb, has a G+C content of 38.1%, and encodes 137 putative open reading frames over 50 amino acids. 126 of these ORFs showed similarity to other baculovirus genes in the database including all 37 core...
Resource Type:: Article
Full Text:: lepidopteran serpin gene. This is the first report of a baculovirus encoding a member of this family of

Arsenic methylation by marine cyanobacteria Prochlorococcus and Synechococcus

Creator:: Lee, Mikaela
Abstract:: Our experiments aimed to investigate responses of the marine cyanobacteria Prochlorococcus and Synechococcus to toxic arsenic species, such as arsenate, and to understand cellular mechanisms that contribute to arsenic tolerance. We used two strains of Prochlorococcus, a high-light adapted MED4 and low-light adapted MIT9313, both axenic, for cultivation experiments. For...
Resource Type:: Honors College Thesis
Full Text:: was little to no sensitivity to arsenate in Synechococcus WH8102 and Prochlorococcus MED4, but

Bacterial 16S ribosomal DNA analysis of pyrrolizidine alkaloid detoxifying enrichments from the ovine rumen

Creator:: Gray, Diane R.
Abstract:: Bacterial cultures enriched from sheep rumen fluid have demonstrated the ability to detoxify pyrrolizidine alkaloids (seneciphylline and jacobine) in tansy ragwort (Senecio jacobaea). The microbes are difficult to isolate using classical anaerobic techniques, therefore, microbes from two different enrichment cultures demonstrating similar degradation activity were identified using their 16S ribosomal...
Resource Type:: Masters Thesis
Full Text:: . aminophilum, Streptococcus bovis, and Butyrivibrio fibrosolvens. There were no identical organisms between

Investigation of Nematocyst Discharge in Parasitic Cnidarians (Myxozoa)

Creator:: Americus, Benjamin E.
Abstract:: Myxozoans are an enigmatic group of obligately parasitic, microscopic cnidarians. They diverged from their free-living relatives over 600 million years ago and have highly reduced genomes. However, they have retained nematocyst stinging cells which characterize the phylum Cnidaria. Free-living cnidarians utilize this cellular weaponry for defense and predation whereas the...
Resource Type:: Masters Thesis
Full Text:: chapter 2, I report my results from two wet-lab assays that I developed to test the effect of chemical

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:: / This report describes the isolation of a new virus from adult chum salmon (Oncorhynchus keta

A study of Myxobolus cerebralis in the Lostine River, Oregon : epizootiology, distribution and implications for resident and anadromous salmonids

Creator:: Sandell, Todd A.
Abstract:: Myxobolus cerebralis, a myxozoan parasite that infects almost all species of wild and cultured salmonids, was first identified in northeastern Oregon in the Lostine River in 1986. Fish that are heavily infected with M. cerebralis develop whirling disease, which was determined to be the cause of catastrophic declines in rainbow...
Resource Type:: Masters Thesis
Full Text:: Colorado in 1996. There have been no reports of severe salmonid population declines attributed to whirling

ScholarsArchive@OSU

Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

Growth of lactococci relative to antibiotic and quaternary ammonium compounds

Guanosine tetrophosphate accumulation in Rhizobium meliloti

Supplemental Description of Myxobolus squamalis (Myxozoa)

The genome of a baculovirus isolated from Hemileuca sp. encodes a serpin ortholog

Arsenic methylation by marine cyanobacteria Prochlorococcus and Synechococcus

Bacterial 16S ribosomal DNA analysis of pyrrolizidine alkaloid detoxifying enrichments from the ovine rumen

Investigation of Nematocyst Discharge in Parasitic Cnidarians (Myxozoa)

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

A study of Myxobolus cerebralis in the Lostine River, Oregon : epizootiology, distribution and implications for resident and anadromous salmonids

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