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Transmission of "Salmon Poisoning" disease to dogs by Nanophyetus salmincola eggs

ScholarsArchive at Oregon State University

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Title Transmission of "Salmon Poisoning" disease to dogs by Nanophyetus salmincola eggs
Names Nyberg, Peter Albert (creator)
Knapp, Stuart E. (advisor)
Date Issued 1967-11-22 (iso8601)
Note Graduation date: 1968
Abstract The presence of the etiologic agent of "salmon poisoning"
disease, Neorickettsia helminthoeca, was demonstrated in eggs of
the trematode vector, Nanophyetus salmincola. Three dogs were
given 100,000 and one dog 82,000 ground fluke eggs by intraperitoneal
injection. The four animals developed "salmon poisoning"
disease and died. One of these dogs had been given 100,000 intact
eggs previously; this inoculum did not produce the disease. Two
dogs that received either intact or ground adult flukes intraperitoneally
also died from "salmon poisoning" disease. Noninjected
control dogs remained healthy in all instances. Lymph nodes removed
from a dog that had been injected with 82,000 ground eggs
and had died from the disease were injected intraperitoneally into
a susceptible dog. After this dog developed signs of "salmon
poisoning" disease, it was given antibiotic therapy and allowed to
recover. This animal was shown to be immune to the disease by
challenge with N. salmincola metacercariae from fish. A susceptible
control dog given the same number of metacercariae developed
the disease and died. Intracytoplasmic inclusion bodies were seen
in stained lymph node cells from all dogs that developed the disease.
Genre Thesis/Dissertation
Topic Salmon poisoning disease
Identifier http://hdl.handle.net/1957/47191

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