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The prevalence of Giardia duodenalis, Cryptosporidium spp. and other intestinal parasites was determined in dogs <1 year old from Prince Edward Island, Canada. Fecal samples were collected from the local animal shelter (n=62), private veterinary clinics (n=78) and a pet store (n=69). Intestinal para...
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Crenosoma vulpis and Eucoleus aerophilus are nematode parasites that can cause verminous pneumonia in wild carnivores. There is a paucity of information regarding the distribution of parasites in the lungs and the relationship between histopathological and parasitological diagnoses in naturally infe...
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Life-span and reproductive capacity of sea lice, Lepeophtheirus salmonis, were investigated in artificial seawater (Instant OceanReg.) under laboratory conditions. Sea lice were maintained on Atlantic salmon (Salmo salar) in recirculation systems for as long as 7 months. During this period sea lice ...
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Experiments were conducted to determine the effects of sea lice, Lepeophtheirus salmonis, on non-specific defence mechanisms in Atlantic salmon, Salmo salar, by experimentally infesting hatchery-reared 1 and 2 year old post-smolts, S1 and S2, with laboratory grown infective copepodids at moderate to...
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Experiments involving 200 rainbow trout showed that host defence mechanisms in sea lice-infested fish are impaired, predisposing fish to subsequent infections to a second pathogen, such as the microsporidian parasite Loma salmonae. Macrophage impairment in lice-infested fish occurred when sea lice b...
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The effects of Lepeophtheirus salmonis, on non-specific defence mechanisms in Salmo salar, were determined by experimentally infesting 180 hatchery-reared post-smolts with laboratory-grown infective copepodids at moderate to high infection intensities ranging from 15 to 285 lice per fish. The effect...
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The roles of water temperature, flow, and agitation on the development and settlement of sea lice (Lepeophtheirus salmonis) on their Atlantic salmon (Salmo salar) hosts were investigated in the laboratory. In the first phase, fish were exposed to 5, 10, or 15 degree C and increased water-flow (18 L/...
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The roles of water temperature, flow and agitation on the development and settlement of sea lice on their Atlantic salmon hosts were investigated in the laboratory. In the first phase, fish were exposed to 5, 10 or 15 degrees C and increased water-flow (18 vs. 6 litre/min). In the second phase, fish...
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Lepeophtheirus salmonis is capable of causing severe damage to Atlantic salmon and this study was conducted to examine the physiological response of salmon to the stress of sea lice infestation. Smoltified salmon were acclimatized in 30% saltwater and exposed to high levels of lice infestation. The ...
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Physiological, immunological and biochemical parameters of blood and mucus, as well as skin histology, were compared in 3 salmonid species (rainbow trout Oncorhynchus mykiss, Atlantic salmon Salmo salar and coho salmon O. kisutch) following experimental infection with sea lice Lepeophtheirus salmoni...
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Cytokine genes in fish -- Environmental effects on the ontogeny of non-specific and specific defenses in turbot larvae -- Antibacterial proteins in skin mucus from rainbow trout -- Interferon-induced genes in the rainbow trout -- IPN recombinant vaccines -- DNA vaccination during low temperature and...