Blosnavirus Explained

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]}

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]

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]

External links

• ICTV Report: Birnaviridae
• Viralzone: Blosnavirus

Notes and References

1. Delmas . B . Attoui . H . Ghosh . S . Malik . YS . Mundt . E . Vakharia . VN . ICTV Report . Consortium . ICTV virus taxonomy profile: Birnaviridae. . The Journal of General Virology . January 2019 . 100 . 1 . 5-6 . 10.1099/jgv.0.001185 . 30484762. free .
2. Web site: ICTV Report Birnaviridae .
3. Web site: Viral Zone. ExPASy. 15 June 2015.
4. Web site: Virus Taxonomy: 2020 Release . International Committee on Taxonomy of Viruses (ICTV) . March 2021 . 21 May 2021.