Ostreavirus Explained

Ostreavirus is a genus of viruses in the order Herpesvirales, and one of only two genera in the family Malacoherpesviridae. Molluscs serve as natural hosts. There is only one species described in this genus, Ostreid herpesvirus 1 (OsHV-1), commonly known as oyster herpesvirus. A disease associated with this genus is sporadic episodes of high mortality among larvae and juveniles.^{[1] [2]}

Acute viral necrosis virus, which affects scallops such as Chlamys farreri, appears to be a variant of Ostreid herpesvirus 1.^[3]

Ostreid herpesvirus 1 was subsequently detected in the common octopus (Octopus vulgaris).^[4]

Structure

Ostreavirus is enveloped, with spherical to pleomorphic geometry, and T=16 symmetry. The diameter is around 150-200 nm. The genome is linear and non-segmented, around 134kb in length.

Genus	Structure	Symmetry !	Capsid	Genomic arrangement	Genomic segmentation
Ostreavirus	Spherical pleomorphic	T=16	Enveloped	Linear	Monopartite

Life cycle

Viral replication is nuclear, and is lysogenic. DNA templated transcription is the method of transcription. Molluscs serve as the natural host.

External links

• Viralzone: Ostreavirus
• ICTV

Notes and References

1. Web site: Viral Zone. ExPASy. 15 June 2015.
2. Web site: ICTV. Virus Taxonomy: 2014 Release. 15 June 2015.
3. Ren W, Chen H, Renault T, Cai Y, Bai C, Wang C, Huang J (2013) Complete genome sequence of acute viral necrosis virus associated with massive mortality outbreaks in the Chinese scallop, Chlamys farreri" Virol J 10(1) 110
4. 2021-07-01. First detection of OsHV-1 in the cephalopod Octopus vulgaris. Is the octopus a dead-end for OsHV-1?. Journal of Invertebrate Pathology. en. 183. 107553. 10.1016/j.jip.2021.107553. 0022-2011. free. Prado-Alvarez . Maria . García-Fernández . Pablo . Faury . Nicole . Azevedo . Carlos . Morga . Benjamin . Gestal . Camino . 33596434 . 10261/239819 . free .