Abstract
The ultrastructure, development, and histopathology of a new cytoplasmic polyhedrosis virus of Aedes cantator are described. Virus particles measure 70 nm in diameter, are icosahedral in shape, and consist of a central electron-dense core surrounded by a capsid with six projections. Occlusion bodies are irregular in size (0.5–3.0 μm) and shape and contain several virus particles. Virus particles are assembled within an interconnecting network of fine filaments and are occluded by the deposition of a proteinaceous crystal around groups of mature virus particles within a virogenic stroma. Infections are confined to cells of the cardia, gastric ceca, and posterior portion of the midgut, which hypertrophy and frequently lyse. Infected larvae die during the fourth larval instar or as pupae. The prevalence of infection in natural field populations is less than 1%.
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