Journal
FOOD AND ENVIRONMENTAL VIROLOGY
Volume 12, Issue 2, Pages 174-179Publisher
SPRINGER
DOI: 10.1007/s12560-020-09420-6
Keywords
Lymphocystis disease virus; Persistence; Seawater; Temperature; Microbiota; Abiotic factors
Funding
- Junta de Andalucia
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Lymphocystis disease virus (LCDV), the causative agent of lymphocystis disease (LCD), is a waterborne pathogen that uses the external surfaces, including the gills, as portals to gain access to fish host. However, there are no data on LCDV persistence in the aquatic environment. In this study, the persistence of LCDV in natural (raw), treated (autoclaved and filtered) and synthetic seawater held at 22 and 18 degrees C has been evaluated. The estimated T-99 values for LCDV in seawater ranged from 2.7 to 242 days depending on seawater type and temperature, with the highest value recorded at 22 degrees C in autoclaved seawater. Microbiota and temperature seem to be the main factors affecting the persistence of LCDV in seawater. The results indicated that LCDV is more stable in treated seawater than most of the fish pathogenic viruses studied so far, supporting the relevance of this medium for the prevalence of LCD in fish farms.
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