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Blosnavirus
''Blosnavirus'' is a genus of viruses, in the family ''Birnaviridae''. Blotched snakehead The blotched snakehead (''Channa maculata'') is a species of Channidae, snakehead. It is one of four species of the genus ''Channa'' native to China. It is also to native northern Vietnam and Taiwan, but has been widely introduced to other countr ... fish serve as natural hosts. There are two species in this genus. Taxonomy The genus contains the following species: * '' 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. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blotched Snakehead Virus
''Blosnavirus'' is a genus of viruses, in the family '' Birnaviridae''. Blotched snakehead The blotched snakehead (''Channa maculata'') is a species of Channidae, snakehead. It is one of four species of the genus ''Channa'' native to China. It is also to native northern Vietnam and Taiwan, but has been widely introduced to other countr ... fish serve as natural hosts. There are two species in this genus. Taxonomy The genus contains the following species: * '' 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. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birnaviridae
''Birnaviridae'' is a family of double-stranded RNA viruses. Salmonid fish, birds and insects serve as natural hosts. There are currently 11 species in this family, divided among seven genera. Diseases associated with this family include infectious pancreatic necrosis in salmonid fish, which causes significant losses to the aquaculture industry, with chronic infection in adult salmonid fish and acute viral disease in young salmonid fish. Structure Viruses in family ''Birnaviridae'' are non-enveloped, with icosahedral single-shelled geometries, and T=13 symmetry. The diameter is around 70 nm. Genome The genome is composed of linear, bi-segmented, double-stranded RNA. It is around 5.9–6.9 kbp in length and codes for five to six proteins. Birnaviruses encode the following proteins: RNA-directed RNA polymerase (VP1), which lacks the highly conserved Gly-Asp-Asp (GDD) sequence, a component of the proposed catalytic site of this enzyme family that exists in the conserve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viruses
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen infecting tobacco plants and the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898,Dimmock p. 4 more than 9,000 virus species have been described in detail of the millions of types of viruses in the environment. Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity. The study of viruses is known as virology, a subspeciality of microbiology. When infected, a host cell is often forced to rapidly produce thousands of copies of the original virus. When not inside an infected cell or in the process of infecting a cell, viruses exist in the form of independent particles, or ''virions'', consisting of (i) the genetic material, i.e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blotched Snakehead
The blotched snakehead (''Channa maculata'') is a species of Channidae, snakehead. It is one of four species of the genus ''Channa'' native to China. It is also to native northern Vietnam and Taiwan, but has been widely introduced to other countries, where it is an invasive species. This predatory species typically grows to a length of ,SeriouslyFish: Channa maculata.' Retrieved 27 June 2014. but it has been confirmed at and some suggest it may reach a far larger size. References Channa, Blotched snakehead Fish of East Asia Fish described in 1801 {{anabantiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lates Calcarifer Birnavirus
''Lates'' is a genus of freshwater and euryhaline lates perches belonging to the family Latidae. The generic name is also used as a common name, lates, for many of the species. All species are predatory, and the Nile perch (''L. niloticus''), in particular, has become infamous as an invasive species introduced into the East African Lake Victoria, where many native Haplochromines were driven extinct. In contrast to the widespread Barramundi and Nile perch (though the fish does face threats from human activity), several members of the genus ''Lates'' with relatively restricted African or Asian distributions are themselves considered threatened. Etymology The generic name ''Lates'' derives from the Latin ''latēre'' (to be hidden). Description These fishes range in size from less than in maximum overall length, the largest species reaching weights up to . They all have the characteristic centropomid shape, with the two-part dorsal fin and general percoid form. All species are ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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