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

F.J. Stephens, J.J. Cleary, G. Jenkins, J.B. Jones, S.R. Raidal, J.B. Thomas

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29 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)1-10
Number of pages10
Issue number1-4
Publication statusPublished - 2003


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