Studies on the pathology of a baculovirus in Aedes triseriatus

The pathology of a Baculovirus (BV) in Aedes triseriatus was studied. The virus infected the cardia, gastric caeca, and the entire stomach of larval midgut epithelium. The progression of the disease was similar to that of other Baculoviruses of the nuclear polyhedrosis virus (NPV) type. Rodshaped nucleocapsids were formed within a Feulgen-positive virogenic stroma and along the nuclear envelope. These nucleocapsids were enveloped by a membranous material and occluded randomly in small irregular and polyhedral proteinic inclusions. The disease differed from other BVs of the NPV type in that the small proteinic inclusions gradually coalesced as they grew, forming large fusiform inclusions.