A Saprolegnia parasitica challenge system for rainbow trout: assessment of Pyceze as an anti-fungal agent for both fish and ova
Pottinger, T.G.; Day, J.G.. 1999 A Saprolegnia parasitica challenge system for rainbow trout: assessment of Pyceze as an anti-fungal agent for both fish and ova. Diseases of Aquatic Organisms, 36. 129-141. 10.3354/dao036129
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Abstract/Summary
A reproducible Saprolegnia parasitica spore delivery system was developed and demonstrated to be effective in providing a sustained spore challenge for up to 10 days. Treatment of rainbow trout with slow-release intraperitoneal implants containing cortisol resulted in chronically elevated blood cortisol levels and rendered the fish susceptible to infection by S. parasitica when exposed to the spore challenge. Sham-implanted fish were not susceptible to infection. Bronopol (2-bromo-2-nitropropane-1,3-diol), formulated as Pyceze, was effective in protecting predisposed fish from infection by S. parasitica when administered as a daily bath/flush treatment at concentrations of 15 mg l-1 and greater. Pyceze was also demonstrated to protect fertilised rainbow trout ova from S. parasitica challenge when administered as a daily bath/flush treatment at concentrations of between 30 and 100 mg l-1. Pyceze appears to qualify as a safe and effective replacement for malachite green and formalin in the prevention of fungal infections in the aquaculture environment.
Item Type: | Publication - Article |
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Digital Object Identifier (DOI): | 10.3354/dao036129 |
Programmes: | CEH Programmes pre-2009 publications > Other |
UKCEH and CEH Sections/Science Areas: | _ Pre-2000 sections |
ISSN: | 0177-5103 |
Additional Information. Not used in RCUK Gateway to Research.: | Click on the Official URL to access freely available full text |
Additional Keywords: | Saprolegnia, fungal infection, rainbow trout, Oncorhynchus mykiss, bronopol, Pyceze, cortisol, stress |
NORA Subject Terms: | Zoology Biology and Microbiology |
Date made live: | 16 Jul 2015 08:37 +0 (UTC) |
URI: | https://nora.nerc.ac.uk/id/eprint/510854 |
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