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Evaluation of Membrane Filtration and UV Irradiation for the Control of Flavobacterium psychrophilum in Recirculation Aquaculture Systems

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dc.contributor.advisor Moccia, Richard D.
dc.contributor.author Huyben, David C.
dc.date.accessioned 2013-01-07T16:23:45Z
dc.date.available 2013-01-07T16:23:45Z
dc.date.copyright 2012-12
dc.date.created 2012-12-20
dc.date.issued 2013-01-07
dc.identifier.uri http://hdl.handle.net/10214/5244
dc.description.abstract Flavobacterium psychrophilum, the causative agent of bacterial cold water disease (BCWD), is tolerant of recommended ultraviolet (UV) doses used in recirculation aquaculture systems (RAS). Membrane filtration (MF) is used to remove pathogens from wastewater in many industries, but has not been thoroughly tested in RAS. In this study, bacterial removal efficiencies were assessed between MF and UV treatments over 30 days in an RAS. Bacterial removal efficiencies were not significantly different (p > 0.05) between MF and UV treatments, which removed 98.5 ± 0.4 % and 99.6 ± 0.1 % of total bacteria and 93.2 ± 5.2 % and 92.5 ± 4.1 % of heterotrophic bacteria, respectively. Under laboratory conditions, a MF system was challenged with concentrated doses of F. psychrophilum and achieved 5.8 ± 0.2 log reductions of the pathogen. Therefore, MF represents a potential alternative to UV irradiation and could be used to reduce the prevalence of F. psychrophilum in RAS, potentially reducing the incidence of BCWD and its impact on the aquaculture industry. en_US
dc.description.sponsorship Environment Canada and Ontario Ministry of Agriculture, Food and Rural Affairs. en_US
dc.language.iso en en_US
dc.subject Aquaculture en_US
dc.subject Aquaculture Rearing Systems en_US
dc.subject Membrane Filtration en_US
dc.subject Wastewater Treatment en_US
dc.subject Ultrafiltration en_US
dc.subject Pathogen Control en_US
dc.subject Fish Disease en_US
dc.subject Flavobacterium psychrophilum en_US
dc.subject Bacterial Cold Water Disease en_US
dc.subject UV irradiation en_US
dc.title Evaluation of Membrane Filtration and UV Irradiation for the Control of Flavobacterium psychrophilum in Recirculation Aquaculture Systems en_US
dc.type Thesis en_US
dc.degree.programme Animal and Poultry Science en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Animal and Poultry Science en_US


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