Notes on Genus: Cardoreovirus


Type member: Eriocheir sinensis reovirus


General Description

This is one of the animal virus genera in the family Reoviridae. Members have 12 segments and infect crustaceans. The electrophoretic mobility profile is different from that of other genera in the family and the limited sequence data suggest a distant phylogenetic relationship to the genus Seadornavirus. The name reflects the fact that these viruses have been isolated from crabs (latin Carcinus) and have 12 (latin dodecem) RNA segments.


Virions isometric (icosahedral), c.80 nm in diameter.


Linear, double stranded RNA in 12 segments. Each virion contains a single copy of the entire genome.

Genus Genomic Organization

Each segment has a single ORF.

Type Member Genomic Organization

There are no complete sequence data for the type member but for Scylla serrata reovirus SZ-2007, the twelve segments are as follows:
Protein Protein Size
14327VP1 Polymerase 161.3
22721VP2 Capping enzyme 100.7
32715VP3 96.9
42460VP4 51.0
52338VP5 61.8
62202VP6 67.0
71517VP7 46.2
81303VP8 32.7
91255VP9 40.4
101244VP10 35.9
111177VP11 23.7
121155VP12 29.7