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Journal of Wildlife Diseases, 17(1), 1981, pp. 11-16
© Wildlife Disease Association  1981
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The efficacy of UV irradiation in the microbial disinfection of marine mammal water

S Spotte and JD Buck


ABSTRACT

A study was made on the efficacy of a commercial ultraviolet (UV) sterilizer in reducing the number of bacteria and yeasts ina saline, closed-system marine mammal complex. UV irradiation was effective in lowering bacterial counts in the effluent of the unit (greater than 75% reduction), but bacteria in more remote parts of the water system reached levels equal to or greater than pre-UV counts. Yeast reduction was considerably less, and a trend similar to that of the bacteria was observed in remote sections of the water system. It is concluded that UV irradiation is of limited value in the disinfection of marine mammal water. Factors contributing to the poor performance of the sterilizer were the long recycle time of the water and lack of a residual effect.




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Copyright © 1981 by the Wildlife Disease Association.