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Treatments to control Haliotrema abaddon in the West Australian dhufish, Glaucosoma hebraicum

Stephens, F.J., Cleary, J.J., Jenkins, G., Jones, J.B.ORCID: 0000-0002-0773-2007, Raidal, S.R. and Thomas, J.B. (2003) Treatments to control Haliotrema abaddon in the West Australian dhufish, Glaucosoma hebraicum. Aquaculture, 215 (1-4). pp. 1-10.

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Haliotrema abaddon is a significant monogenean parasite of the gills of maricultured Western Australian dhufish, Glaucosoma hebraicum, and can cause severe gill pathology. A series of trials was undertaken using infested fish in 120-l glass aquaria to assess the safety and efficacy of some potential “in water” treatments, including trichlorphon, praziquantel, formalin, toltrazuril and a freshwater bath. Treatment efficacy was established by assessment of the number of parasites found in tank sediment immediately following treatment and by examination of gills for parasites using a gill biopsy technique. Praziquantel bathes, 2 mg l−1 of 30-h duration, were the most safe and effective treatment. Freshwater bathes of below 2‰ salinity for 90 min were effective but highly stressful for the fish. Trichlorphon 0.5 mg l−1 for 30 h was safe and relatively effective. Formalin, 25 ppm, and toltrazuril, 12.5 mg l−1, were safe but resulted in the removal of insufficient parasites to recommend it as a treatment for dhufish infested with H. abaddon.

Item Type: Journal Article
Murdoch Affiliation(s): School of Veterinary and Biomedical Sciences
Publisher: Elsevier BV
Copyright: © 2003 Elsevier Science BV
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