Laem-Singh Virus

Also known as: LSNV

Laem-Singh Virus (LSNV) is a recently identified RNA virus associated with growth retardation in farmed black tiger shrimp (Penaeus monodon) in Thailand. It is often found in conjunction with other pathogens such as Monodon Slow Growth Syndrome (MSGS), suggesting a possible co-factor role in disease expression. The virus appears to target the lymphoid organ and other tissues involved in immune response and metabolism. Affected shrimp typically exhibit significantly reduced growth rates, smaller size at harvest, and poor feed conversion, resulting in substantial economic losses in shrimp aquaculture. Transmission is believed to occur horizontally, likely via water or through cohabitation. Currently, there is no effective treatment or commercial vaccine available for LSNV.

Distribution: Southeast Asia, particularly Thailand
Detection Methods: Molecular diagnostics (PCR)
Hosts: Black tiger shrimp (Penaeus monodon)
Target Tissue: Lymphoid organ, hepatopancreas, other immune/metabolic tissues