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Ultraviolet irradiation is an effective alternative to ozonation as a sea water treatment to prevent Kudoa neurophila (Myxozoa: Myxosporea) infection of striped trumpeter, Latris lineata (Forster)

Citation

Cobcroft, JM and Battaglene, SC, Ultraviolet irradiation is an effective alternative to ozonation as a sea water treatment to prevent Kudoa neurophila (Myxozoa: Myxosporea) infection of striped trumpeter, Latris lineata (Forster), Journal of Fish Diseases, 36, (1) pp. 57-65. ISSN 1365-2761 (2013) [Refereed Article]

Copyright Statement

Copyright 2012 Blackwell Publishing Ltd

DOI: doi:10.1111/j.1365-2761.2012.01413.x

Abstract

Myxozoan parasites are known pathogens of cultured finfish. Kudoa neurophila n. comb. (Grossel, Dykova´, Handlinger & Munday) has historically infected hatchery-produced striped trumpeter, Latris lineata (Forster in Bloch and Schneider), a candidate species for seacage aquaculture in Australia. We examined the efficacy of four water treatment methods to prevent K. neurophila infection in post-larval (paperfish) and juvenile striped trumpeter. Treatments included dose-controlled ultraviolet irradiation [hydro-optic disinfection (HOD)], ozone with conventional UV (ozone), mechanical filtration at 25 lm and then foam fractionation (primary filtration), and 50-lm-filtered sea water (control). In post-larvae (initially 10.3 ± 2.7 g, mean ± SD, 259 days post-hatching, dph), the infection prevalence (PCR test) after 51 days was 93 ± 12% in the control, 100 ± 0% in primary filtration and 0 ± 0% in both ozone and HOD. Likewise, in juveniles (initially 114 ± 18 g, 428 dph), prevalence was 100 ± 0% in the control and primary filtration treatments with no infection detected in ozone and HOD. Concurrently, there was a 50–100% reduction in heterotrophic bacteria and 100% reduction in presumptive Vibrio sp. in sea water HOD and ozone treatments. HOD with a dose of 44 mJ cm 2 UV was as effective

Item Details

Item Type:Refereed Article
Keywords:hydro-optic UV disinfection,infection, Kudoa neurophila, myxozoa, ozone,treatments, water treatment
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Aquaculture Fin Fish (excl. Tuna)
Author:Cobcroft, JM (Dr Jennifer Cobcroft)
Author:Battaglene, SC (Associate Professor Stephen Battaglene)
ID Code:81641
Year Published:2013
Web of Science® Times Cited:10
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2012-12-20
Last Modified:2017-11-03
Downloads:0

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