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[Red sea bream iridoviral disease]
Kazuhiro Nakajima1, Jun Kunita
1Research Promotion and Development Division, Fisheries Research Agency, Yokohama, Japan. kazuhiro.nakajima@pref.toyama.lg.jp
Uirusu
|November 26, 2005
Summary
Red sea bream iridoviral disease, caused by red sea bream iridovirus (RSIV), has led to significant marine fish mortality since 1990. Diagnosis methods include PCR and immunofluorescence, with a formalin-killed vaccine available for control.
Area of Science:
- * Aquatic animal pathology
- * Viral disease diagnostics
- * Fish virology
Context:
- * Red sea bream iridoviral disease (RSIV) emerged in Japan in 1990.
- * RSIV causes mass mortalities in cultured marine fish, including red sea bream (Pagrus major).
- * Clinical signs include lethargy, anemia, gill petechiae, and spleen enlargement.
Purpose:
- * To describe the characteristics of red sea bream iridovirus (RSIV).
- * To outline diagnostic methods for RSIV infection.
- * To present control strategies for RSIV disease.
Summary:
- * Red sea bream iridovirus (RSIV) is a large, icosahedral, cytoplasmic DNA virus in the family Iridoviridae.
- * The RSIV genome is linear dsDNA, approximately 112,415 bp.
- * Rapid diagnosis is achieved via indirect immunofluorescence and PCR.
- * A formalin-killed vaccine is commercially available for disease control.
Impact:
- * Significant economic losses in marine fish aquaculture due to RSIV outbreaks.
- * Development of diagnostic tools aids in disease management.
- * Availability of a vaccine provides a method for disease prevention and control.