Abstract
Survival of bacterial fish pathogens, including Enterococcus seriolicida, Vibrio anguillarum, and Pasteurella piscicida, in ozonated seawater was determined in a batch system. Bacterial counts of all fish pathogens decreased at more than 0.040 to 0.060 mg of total residual oxidants (TROs) per liter, whereas no decrease in viable counts was observed at less than 0.018 to 0.028 mg of TROs per liter. The 99% inactivation point was achieved at concentrations of 0.111 mg/liter for E. seriolicida, 0.063 mg/liter for P. piscicida, and 0.064 mg/liter for V. anguillarum within 1 min. Moreover, the mean 99 and 99.9% killing concentration-contact time (C.t) products were 0.123 and 0.186 mg.min/liter for E. seriolicida, 0.056 and 0.084 mg.min/liter for P. piscicida, and 0.081 and 0.123 mg.min/liter for V. anguillarum, respectively. However, the mean 99 and 99.9% C.t products for the mixed population in coastal seawater were 0.200 and 0.621 mg.min/liter. These results strongly suggest that ozone treatment at more than 1.0 mg of TROs per liter for several minutes is able to disinfect seawater for mariculture efficiently.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Engel J. P., Rubin A. J., Sproul O. J. Inactivation of Naegleria gruberi cysts by chlorinated cyanurates. Appl Environ Microbiol. 1983 Nov;46(5):1157–1162. doi: 10.1128/aem.46.5.1157-1162.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kusuda R., Kawai K., Salati F., Banner C. R., Fryer J. L. Enterococcus seriolicida sp. nov., a fish pathogen. Int J Syst Bacteriol. 1991 Jul;41(3):406–409. doi: 10.1099/00207713-41-3-406. [DOI] [PubMed] [Google Scholar]