Reo-Like Virus in White Shrimp Penaeus vannamei (Crustacea: Decapoda): Co-occurrence with Baculovirus penaei in Experimental Infections

Authors

Rena M. Krol, Gulf Coast Research Laboratory
William E. Hawkins, Gulf Coast Research LaboratoryFollow
Robin M. Overstreet, Gulf Coast Research LaboratoryFollow

Date of this Version

3-6-1990

Comments

Published in Diseases of Aquatic Organisms (1990) 8: 45-49. Copyright 1990, Inter-Research. Used by permission.

Abstract

A virus, tentatively identified as reo-like, occurred concurrently with experimentally-induced Baculovirus penaei (BP) infection in cultured white shrimp larvae Penaeus vannamei. Each shrimp with a reo-like viral infection also had a BP infection, but not all BP-infected shrimp had a reo-like infection. Both viruses occurred in the same tissues and occasionally withln the same cell. The reolike virus developed in epithelial cells of the anterior midgut and in reserve- and fibrillar-cells of the hepatopancreas. The paraspherical and non-enveloped reo-like virions (ca. 50 nm diam.) occurred as unordered aggregates in the cell cytoplasm. Their etiology has not been determined. Reo-like virions may have been introduced along with the BP virus, or, were latent and only manifested due to stress induced by the more pathogenic BP virus.