Abstract
This study evaluated the susceptibility of Penaeus vannamei, Kona stock-line, to infection by an isolate of Taura syndrome virus from Belize (TSV-BZ) under hyperthermic conditions (32°C). Shrimp exposed to the reference Hawaii-94 isolate of TSV (TSV-HI) showed resistance to infection at 32°C as demonstrated by the absence of mortality, histopathological lesions and decreased viral load by qPCR. However, at 32°C, shrimp were fully susceptible to the disease caused by TSV-BZ, exhibiting high mortality, severe histopathological lesions and increased viral load. This susceptibility of shrimp to TSV-BZ infection under hyperthermic conditions was independent of the route of infection (injection vs. per os) and the salinity of the water (11 vs. 28). TSV-BZ might be a temperature-permissible mutant of TSV.
Original language | English (US) |
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Pages (from-to) | 157-160 |
Number of pages | 4 |
Journal | Diseases of aquatic organisms |
Volume | 88 |
Issue number | 2 |
DOIs | |
State | Published - Jan 25 2010 |
Keywords
- Belize variant
- Hyperthemia
- Immune response
- Penaeus vannamei
- Shrimp
- Taura syndrome virus
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Aquatic Science