Plant host effect on the development of Heliothis virescens F. (Lepidoptera: Noctuidae).

Shelby: Induction of Tobacco Budworm Antimicrobial Peptides 921 INDUCTION OF ANTIMICROBIAL PEPTIDES IN INFECTED TISSUES OF LARVAL HELIOTHIS VIRESCENS (LEPIDOPTERA: NOCTUIDAE)

Effective biological control of destructive heliothine larvae via application of microbial entomopathogens or parasitoids is limited by a robust immune response against infection and parasitization. To better understand the immune response of budworms against microbial entomopathogens, several orthologs of antibacterial response proteins were identified and extracted from a tobacco budworm, Hel...

ARTHROPOD BIOLOGY Size and Chemical Composition of Heliothis virescens (Lepidoptera: Noctuidae) Spermatophores

The tobacco budworm, Heliothis virescens (F.) (Lepidoptera: Noctuidae), is a polyandrous species of economic importance on the American continent. This sexual behavior allows for the presence of multiple spermatophores inside a female and the possibility of different males fertilizing the femaleÕs offspring, which can make insecticide resistance management or sterile insect release programs par...

Genetic basis of resistance to Cry1Ac and Cry2Aa in Heliothis virescens (Lepidoptera: Noctuidae).

The development of pest resistance to transgenic crop plants producing insecticidal toxins from Bacillus thuringiensis Berliner (Bt) poses a major threat to their sustainable use in agriculture. "Pyramiding" two toxins with different modes of actions in the same plant is now being used to delay the evolution of resistance in the insects, but this strategy could fail if a single gene in a pest c...

Spermiogenesis of Eupyrene Sperm in Prepupae"} Pupae"} and Adults of Heliothis virescens (Lepidoptera: Noctuidae): An Ultrastructural Study

Response of Heliothis virescens (Lepidoptera: Noctuidae) strains to Bacillus thuringiensis Cry1Ac incorporated into different insect artificial diets.

Susceptibility to the Cry1Ac toxin from Bacillus thuringiensis in tobacco budworm, Heliothis virescens (F.) (Lepidoptera: Noctuidae), is usually measured by performing bioassays under laboratory conditions. Accurate comparison of Cry1Ac susceptibility among H. virescens samples conducted in different places is challenged by several important methodological aspects, especially if different insec...