Products
Yellow Head Virus (YHV)
Yellow Head Disease (YHD) is caused by infection of Yellow Head Virus (YHV) on shrimp. It was first reported in Thailand in 1990 and has since been reported in Asia, East Afirca, Australia and South America. YHV is a positive-sense single-stranded RNA virus related to coronaviruses and arteriviruses. YHD outbreaks have been reported in block tiger prawn (P. monodon) and white Pacific shrimp (P. vannamei).
Clinical signs of infected shrimps
- Yellow discoloration of its cephalothorax
- Exceptionally high feed consumption at initial stage followed by abrupt reduced feeding
- Moribund shrimps congregate near the surface of their pond before dying
Mortality rate
Up to 100% mortality within 3-5 days of the first appearance of clinical signs
Infected shrimp types
P. monodon (Black tiger prawn), P. vannamei (Pacific white shrimp)
Mode of transmission
Transmitted by injection, ingestion of infected tissue, immersion in membrane filtered tissue extracts, or by co-habitation with infected shrimp; injection of extracts of paste prawns collected from infected ponds; by surface contamination or infection of tissue surrounding the fertilised egg.
Ordering information
| Rapid Test Kits | |||
|---|---|---|---|
| RYHV01-020 | ShrimpCheck Yellow Head Virus (YHV) Rapid Test Kit | 20 tests/ kit | |
| PCR Kits | |||
| PYHV01-050 | ShrimpCheck Yellow Head Virus (YHV) One Step RT-PCR Kit | 50 tests/ kit | |
| PYHV01-100 | ShrimpCheck Yellow Head Virus (YHV) One Step RT-PCR Kit | 100 tests/ kit | |
| CPYHV01-050 | ShrimpCheck Yellow Head Virus (YHV) One Step RT-PCR Kit with Nucleic Acid Extraction Kit | 50 tests/ kit | |
| CPYHV01-100 | ShrimpCheck Yellow Head Virus (YHV) One Step RT-PCR Kit with Nucleic Acid Extraction Kit | 100 tests/ kit | |
| Real-time PCR Kits | |||
| QYHV01-050 | ShrimpCheck Yellow Head Virus (YHV) One Step Real-time RT-PCR Kit | 50 tests/ kit | |
| QYHV01-100 | ShrimpCheck Yellow Head Virus (YHV) One Step Real-time RT-PCR Kit | 100 tests/ kit | |
| CQYHV01-050 | ShrimpCheck Yellow Head Virus (YHV) One Step Real-time RT-PCR Kit with Nucleic Acid Extraction Kit | 50 tests/ kit | |
| CQYHV01-100 | ShrimpCheck Yellow Head Virus (YHV) One Step Real-time RT-PCR Kit with Nucleic Acid Extraction Kit | 100 tests/ kit | |