Blosnavirus

Blosnavirus is a genus of viruses, in the family Birnaviridae.^[1] Blotched snakehead fish serve as natural hosts. There are two species in this genus.^[2][3]

Blosnavirus
Virus classification
(unranked):	Virus
Realm:	Riboviria
Kingdom:	Orthornavirae
Phylum:	incertae sedis
Family:	Birnaviridae
Genus:	Blosnavirus

Taxonomy

The genus contains the following species:^[4]

• Blotched snakehead virus
• Lates calcarifer birnavirus

Structure

Viruses in Blosnavirus are non-enveloped, with icosahedral and Single-shelled geometries, and T=13 symmetry. The diameter is around 70 nm. Genomes are linear and have 2 segments, around 2.7-3.4kb in length. The genome codes for 6 proteins.^[2][3]

Genus	Structure	Symmetry	Capsid	Genomic arrangement	Genomic segmentation
Blosnavirus	Icosahedral	T=13	Non-enveloped	Linear	Segmented

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. Blotched snakehead fish serve as the natural host.^[2][3]

Genus	Host details	Tissue tropism	Entry details	Release details	Replication site	Assembly site	Transmission
Blosnavirus	Blotched snakehead fish	None	Unknown	Budding	Cytoplasm	Cytoplasm	Unknown