Yellowhead disease
| Yellow head virus | |
|---|---|
| |
| Yellow head virus virion | |
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| Yellow head virus genome | |
Virus classification 
| |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Pisuviricota |
| Class: | Pisoniviricetes |
| Order: | Nidovirales |
| Family: | Roniviridae |
| Genus: | Okavirus |
| Subgenus: | Tipravirus
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| Species: | Yellow head virus
|
Yellowhead disease (YHD) is a
arteriviruses
.
The disease is highly lethal and contagious, killing shrimp quickly. Outbreaks of this disease have wiped out in a matter of days the entire populations of many shrimp farms that cultivated P. monodon, i.e. particularly
Gill-associated virus (GAV).[2]
Clinical
The cephalothorax of infected shrimp turns yellow after a period of unusually high feeding activity ending abruptly, and the then moribund shrimps congregate near the surface of their pond before dying. YHD leads to death of the animals within two to four days.[3]
History
YHD had been reported first from Thailand in 1990, the closely related GAV has been discovered in 1995 during a yellowhead-like disease in Australian shrimp farms.
References
- ^ Gulf States Marine Fisheries Commission: Non-Native Species Summaries: Yellowhead Virus (YHV) Archived 2007-09-28 at the Wayback Machine, 2003. Accessed June 30, 2005.
- ^ "ICTV Report Roniviridae".
- ISBN 92-9044-563-7.
External links
Wikispecies has information related to Yellowhead disease.