EFFECTS OF MIXED INFECTIONS OF TWO STRAINS OF GRANULOSIS VIRUS OF THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE), ON THE FORMATION OF VIRAL INCLUSION BODIES

Abstract

AbstractThe spruce budworm, Choristoneura fumiferana (Clemens), is susceptible to two types of granulosis virus. One is characterized by the formation of mostly small ellipsoidal inclusion bodies, the second by the formation of large cubic inclusion bodies. Different shapes and sizes of inclusion bodies were formed when these viruses multiplied in the same tissues, some resembling the ellipsoids, others the cubes.