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Alterations in premating behavior and pheromone biology of gamma-irradiated Trichoplusia ni (Lepidoptera: Noctuidae

Permanent URL:
http://handle.nal.usda.gov/10113/23300
File:
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Abstract:
Exposure of female cabbage looper pupae, Trichoplusia ni, to gamma irradiation at 0 to 72 hr before eclosion resulted in significantly reduced moving and calling activity of the adults. The effects were dose-related from 10 to 40 kR. Generally, irradiation in a nitrogen atmosphere slightly reduced deleterious effects, but fractionation of the radiation dose did not. Four-day-old irradiated females contained significantly more sex pheromone than untreated females, indicating that loss of pheromone is positively correlated to the amount of calling activity. Males exposed to 20 kR or 40 kR in nitrogen were not affected in their flight response in an olfactometer to a level of synthetic pheromone ca. equal to that released by a calling female or to 0.1 x this level. The response of males exposed to 40 kR in air, however, was significantly decreased at the lower pheromone concentration.
Author(s):
Szentesi, A. , McLaughlin, J.R. , Coffelt, J.A.
Note:
Includes references.
Source:
Entomologia experimentalis et applicata 1977, 22 (1)
Language:
English
Year:
1977
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.