Macrobranchium White Tail Disease (Disease White Tail On Shrimp Galah)

Macrobranchium White Tail Disease (Disease White Tail On Shrimp Galah)

Cause: Macrobrachium rosenbergii nodavirus (MrNV) and extra small virus (XSV)

Bio - Ecology of Pathogens:
• Host disease that is highly species specific prawns (Macrobrachium rosenbergii)
• Malignancy: high, within 2-3 days off 100% of the population in the seed.
• Through the artificial infection in OT, clinical symptoms and mortality that occurs with natural infection, whereas the adult shrimp, followed by the emergence of the soft sepalotorak structure of two fluid-filled pouch bulging on either side of hepatopancreas.
• Clinical symptoms of the same, resembling branchiostegite blister disease (BBD) followed by the deaths reported occurred in pond rearing prawns.
• Distribution: India and Southeast Asia (Thailand).

Clinical symptoms
• Weak, anorexia and abdominal muscles in white on the OT.
• The condition was gradually extended to the two sides resulting in degeneration of telson and uropod.
• The color white on the tail is the definitive clinical symptoms, so-called white tail disease.
• Color black (melanisasi) will expand to two sides (anterior & posterior) and showed degeneration of telson and uropod

diagnosis:
• Polymerase Chain Reaction (PCR)
• In situ hybridization

control

• Quarantine actions of broodstock and larval prawns new
• Only use the stem and seeds that are free MrNV and XSV.
• Maintain the health status of shrimp in order to always prime through feeding the right amount and mute
• Maintain the environmental quality of cultivation so as not to cause stress for shrimp

source: Ministry of Maritime Affairs and Fisheries of Indonesia Directorate General of Fisheries Directorate of Fish Health and Environment, 2010

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