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Ultraviolet light control of Ichthyophthirius multifiliis Fouquet in a closed fish culture recirculation system
Author(s) -
GRATZEK J. B.,
GILBERT JEANNINE P.,
LOHR AMY L.,
SHOTTS E. B.,
BROWN J.
Publication year - 1983
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.1983.tb00062.x
Subject(s) - ichthyophthirius multifiliis , ultraviolet light , biology , biofilter , effluent , ultraviolet , fish <actinopterygii> , pulp and paper industry , fish farming , veterinary medicine , microbiology and biotechnology , fishery , aquaculture , environmental science , chemistry , environmental engineering , materials science , photochemistry , medicine , engineering , optoelectronics
. A closed fish culture recirculation system consisting of 36 20‐gallon aquaria in series with a rotating plate biofilter, a diatomaceous earth filter, and an ultraviolet (UV) light sterilizer was evaluated for the effectiveness of UV light in preventing spread of Ichthyophthirius multifiliis . Water from the aquaria, the reservoir, and a valve 29 cm beyond the UV light source was analysed bacteriologically to assess its effectiveness. The spread of I multifiliis from one aquarium to another was controlled with 91 900 μW s/cm 8 of UV light. No significant differences in the bacterial counts from the water of the reservoir or the aquaria could be demonstrated when the UV light was either on or off, although a significant difference could be demonstrated between the sterilizer effluent and the reservoir and aquaria.
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