Invertebrate iridescent virus 6 (entomopathogen)

Iridoviridae • entomopathogenic viruses • Diseases of pests • Beneficials/natural enemies

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Invertebrate iridescent virus 6 virions (V) in cytoplasm of Diaprepes abbreviatus larvae, N = nucleus, T = tracheal epithelial cell (click on image to enlarge it)
Authors: W.B. Hunter, S.L. Lapointe, X.H. Sinisterra, D.S. Achor and C.J. Funk
Source: Journal of Insect Science, 2003, 3 (9)

Invertebrate iridescent virus 6 symptoms on Diaprepes abbreviatus larvae - 1 = uninfected, 2-4 = infected (4 = covertly infected) (click on image to enlarge it)
Authors: W.B. Hunter, S.L. Lapointe, X.H. Sinisterra, D.S. Achor and C.J. Funk
Source: Journal of Insect Science, 2003, 3 (9)

Invertebrate iridescent virus 6 (entomopathogen) (IIV-6)

This virus was originally isolated from the Lepidopteran stem borer, Chilo suppressalis. However, it can infect a large variety of other insects, including species from the orders Diptera (mainly aquatic species, e.g. see Marina et al., 2005), Coleoptera (mainly soil living stages, e.g. see Hunter et al., 2003) or Orthoptera.

The virus has icosahedral particles with a diameter of 120-130 nm, containing a single copy of linear dsDNA with a length of 212 kbp. The virus appears to be adapted to dark and moist environments and becomes rapidly inactivated when exposed to sunlight or dry conditions (e.g. see Hernández et al., 2005). It is the type species of the genus Iridovirus.

Synonyms:
Chilo iridescent virus
cricket iridovirus
insect iridescent virus 6