Fish, asymptomatically infected with Enteric Redmouth
Bacterium (ERMB), were tested for their ability to transmit
bacteria to non-infected fish. Unstressed carrier fish
were unable to transmit enough bacteria to cause
epizootics or produce carrier fish. However, when the
ERMB carriers were stressed with heat, sufficient bacteria
were shed to infect...
A laboratory-prepared hot-water extract of yeast is required
for vigorous growth of San Francisco sourdough bacteria (Lactobacillus
sanfrancisco) in pure culture. This requirement was examined
with the goal of determining what is unique about fresh yeast extractives
(commercial extractives exhibit much lower growth promoting
activity), and which components of fresh...
The myxozoan Ceratonova shasta is an intestinal parasite of salmon and trout that causes ceratomyxosis, a disease characterized by severe inflammation of the intestine that can lead to hemorrhaging, necrosis, and death of the fish host. The parasite is endemic to the Pacific Northwest of the United States and Canada,...
Corals have multiple roles in maintaining ocean health and are some of the world’s most diverse ecosystems. The coral animal is host to a multitude of taxa, including symbiotic dinoflagellate algae, fungi, bacteria, protists, and viruses. Environmental stressors and disease agents can perturb the delicate balance of the coral host...
Purpose: To compare target dose conformality and OAR sparing afforded by VMAT and HT for pancreatic cancer.
Materials and Methods: A retrospective planning study was performed in 18 patients. Total treatment dose was 59.4Gy. OAR and PTV mean doses, conformity indices, isodose volumes, and integral doses were compared. The relationship...
The vitamin B₁₂ concentrations in both the water and sediments
of Klamath Lake were found to vary significantly during a
one-year period. The patterns of B₁₂ distribution were remarkably
similar among the three main sites. In all cases there was an extremely
sharp gradation in concentration in relation to depth...
An interactive map of important watersheds in the United States was created for use as a teaching tool in an estuarine ecology class. Figures and explanations of important factors influencing river ecology were created using data downloaded from the U.S. Geologic Survey. This interface serves as a visualization of biological,...
The occurrence and distribution of fish viruses in Oregon were
determined by the examination of anadromous and fresh water salmonids.
Infectious pancreatic necrosis virus (IPNV) was isolated and
identified from asymptomatic adult coho (Oncorhynchus kisutch) and
chinook (0. tshawytscha) salmon returning to the Columbia River
system. Infectious pancreatic necrosis virus...