Topic
Lepidoptera genitalia
About: Lepidoptera genitalia is a research topic. Over the lifetime, 10114 publications have been published within this topic receiving 78876 citations. The topic is also known as: Uncus.
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TL;DR: Infesting conventional nonBt hybrids with southwestern corn borer resulted in significant leaf feeding, stalk tunneling, stunting, yield loss, and aflatoxin contamination, and losses were significantly reduced in transgenic Bt hybrids.
Abstract: Aflatoxin is a potent carcinogen produced by the fungus Aspergillus flavus Link:fr. Aflatoxin contamination of corn greatly diminishes its value and is a major impediment to profitable corn production in the South. Aflatoxin contamination is frequently linked with drought, high temperatures, and insect damage. The effects of southwestern corn borer, Diatraea grandiosella Dyar, damage on aflatoxin contamination were investigated. Aflatoxin contamination levels in conventional nonBt corn hybrids and transgenic Bt hybrids after inoculation with A. flavus and infestation with southwestern corn borer were compared. Aflatoxin contamination was highest when hybrids were inoculated with A. flavus using a technique that wounded the kernels. Aflatoxin contamination was significantly greater in nonBt than in Bt hybrids when ears were inoculated by spraying with an A. flavus conidial suspension and concurrently infesting with southwestern corn borer. Infesting conventional nonBt hybrids with southwestern corn borer resulted in significant leaf feeding, stalk tunneling, stunting, yield loss, and aflatoxin contamination. Losses were significantly reduced in transgenic Bt hybrids.
38 citations
TL;DR: Braconidae are more abundant and specialized than Ichneumonidae in the parasite faunas of leafminers on both deciduous trees and low‐growing plants and are sometimes numerically the dominant parasites on low‐ growing plants.
Abstract: 1
Rearing records of fourteen species of Braconidae and thirteen species of Ichneumonidae from leaf-mining insects of the orders Lepidoptera, Hymenoptera and Coleoptera are presented.
2
Braconidae are more abundant and specialized than Ichneumonidae in the parasite faunas of leafminers on both deciduous trees and low-growing plants.
3
Although seldom comprising a major element in the parasite complex on deciduous trees, Braconidae are sometimes numerically the dominant parasites on low-growing plants.
4
Apanteles circumscriptus associated with Fagaceae is shown to reproduce thelytokously.
38 citations
TL;DR: The results indicate a high environmental stability and suggest that this region is one of the most suitable areas for Eucalyptus plantation in Brazil.
38 citations
38 citations
TL;DR: Two new species of the mite family Erythraeidae (Acari: Prostigmata: Parasitengona) found associated with the spruce budworm, Choristoneura fumiferana (Clemens) (Lepidoptera: Tortricidae), in Maine are described as discussed by the authors.
Abstract: Two new species of the mite family Erythraeidae (Acari: Prostigmata: Parasitengona) found associated with the spruce budworm, Choristoneura fumiferana (Clemens) (Lepidoptera: Tortricidae), in Maine are described Larvae of Leptus treati spnov parasitize spruce budworm adults; L treati is the first member of the genus to have both larval and postlarval instars described Adults of Balaustium kendalli spnov prey on spruce budworm eggs; B kendalli is only the second member of the genus to have both larval and postlarval instars described
38 citations