The storage of infective spores of Vairimorpha necatrix (Protozoa: Microsporida) in antibiotic solution at 4 degrees C.

The interactions between the Diacrisia virginica granulosis virus (DGV) and the Hyphantria cunea baculovirus isolates were determined, utilizing defined differences between the time-mortality responses of these viruses fed to H. cunea larvae. The DGV, having a prolonged incubation period, when given an advantage in time or in the number of capsules, was able to prevent the expression of the more lethal H. cunea granulosis virus (HcGV) isolate. The time-mortality response of test larvae simultaneously fed equivalent dosages of HcGV and DGV was intermediate to that achieved with HcGV alone or DGV alone. Larvae infected with the DGV isolate were still susceptible to double infection by the nucleopolyhedrosis virus. The time-mortality response demonstrated that the development of nucleopolyhedrosis was only partly inhibited by preinfecting the test larvae with the DGV isolate.