Yield and Activity of Gypsy Moth (Lepidoptera: Lymantriidae) Nucleopolyhedrosis Virus Recovered from Survivors of Viral Challenge

  title={Yield and Activity of Gypsy Moth (Lepidoptera: Lymantriidae) Nucleopolyhedrosis Virus Recovered from Survivors of Viral Challenge},
  author={M. Shapiro and J. Robertson},
  journal={Journal of Economic Entomology},
Qualitative and quantitative differences in gypsy moth, Lymantria dispar (L.), nucleopolyhedrosis virus (NPV) were monitored in surviving pupae, eclosing adults, and progeny. Regardless of mortality observed by the end of the larval period, pupal weights, adult emergence, and mating success of survivors were unaffected. However, as larval mortality increased, egg mass weight from surviving, mated females decreased. When NPV obtained from larvae in different mortality groups was tested against… Expand
The effect of gypsy moth metamorphosis on the development of nuclear polyhedrosis virus infection
Results suggest that survivors of sublethal dosages of NPV avoid infection and are therefore incapable of vertically transmitting infectious virus to progeny. Expand
Sublethal Nucleopolyhedrovirus Infection Effects on Female Pupal Weight, Egg Mass Size, and Vertical Transmission in Gypsy Moth (Lepidoptera: Lymantriidae)
Gypsy moth females that survived inoculation with LdNPV as fifth instars were smaller as pupae and laid fewer eggs as adults and treatment with both wild type virus and a genetically manipulated, egt- virus reduced pupal mass to a similar degree. Expand
Virulence of a nucleopolyhedrovirus to Neodiprion abietis (Hymenoptera: Diprionidae).
  • S. Y. Li
  • Biology, Medicine
  • Journal of economic entomology
  • 2005
The results indicated that younger larvae were more susceptible to the virus than older instars, and the speed of larval death depended on the larval age and the virus concentration. Expand
Influence of Larval Age and Virus Concentration on Mortality and Sublethal Effects of a Nucleopolyhedrovirus on the Western Spruce Budworm (Lepidoptera: Tortricidae)
Findings suggest that CfMNPV should be applied to fourth instars in the field to achieve high larval mortality and sublethal effects of viral application on the population dynamics of C. occidentalis are discussed. Expand
Environmental contamination of egg masses as a major component of transgenerational transmission of gypsy moth nuclear polyhedrosis virus (LdMNPV)
In NPV-contaminated sites, environmental contamination of egg masses, rather than transovum transmission from infected parents to progeny, is a more important means of transmission of NPV from one generation to the next. Expand
Resource limitation and the lethal and sublethal effects of a viral pathogen in the Indian meal moth, Plodia interpunctella
The balance between deleterious sublethal effects of the virus and the selection of more robust individuals by the bioassays is proposed as a mechanism to explain variation in the effects of resource limitation and the lethal and sub lethal effects of a granulosis virus on a lepidopteran host. Expand
Transmission of nuclear polyhedrosis virus to gypsy moth (Lepidoptera: Lymantriidae) eggs via contaminated substrates.
Results indicate that gypsy moth egg masses can become contaminated with infectious NPV during oviposition on contaminated substrates and may be an important mode of transmission in high-density populations or in years following an epizootic. Expand
Evidence suggests that early instars acquire lethal doses of NPV from the surface of the egg mass and the cadavers of these larvae produce inoculum that causes a second wave of mortality among late instars. Expand
The occurrence and persistence of nuclear polyhedrosis virus in fluctuating populations of tent caterpillars
Virus persisted in populations through low density and the population with the highest level of virus in the peak density year collapsed following decline, but exceptions occurred. Expand
Studies on controlling the teak defoliator outbreaks by seeding the baculovirus, HpNPV in epicenter
It is indicated that one time low dose application of HpNPV during the epicentre phase of the teak defoliator population could contribute to the reduction in the insect population not only in the parent population but also in the F1 generation. Expand