The current study was undertaken to investigate the role of the chemical and tactile cues in host–plant selection by Spodoptera frugiperda (Smith). Adult female S. frugiperda seemed not to depend on plant volatiles for orientation to host plants. In general, females oviposited more on control areas than on areas treated with leaf extracts of corn, cotton, and tomato. This outcome was independent of extraction duration (1 or 60 min) or solvent (hexane or methanol). The hexane extract of corn inhibited oviposition at doses of 1 and 0.2 g/ml but not at 0.005 and 0.001 g/ml. The methanolic leaf extract decreased oviposition at dosages of 1, 0.2, and 0.005 g/ml but not at a dosage of 0.001 g/ml. S. frugiperda females deposited more eggs on grooved or pitted surfaces than on smooth surfaces. Tactile cues seemed to be highly important during oviposition and could neutralize the deterrent effect of the corn leaf extracts; females oviposited on grooved surfaces independently of the presence or absence of leaf extracts.
How to translate text using browser tools
1 December 2003
Chemical and Tactile Cues Influencing Oviposition of a Generalist Moth, Spodoptera frugiperda (Lepidoptera: Noctuidae)
Julio C. Rojas,
Armando Virgen,
Leopoldo Cruz-López
ACCESS THE FULL ARTICLE
It is not available for individual sale.
This article is only available to subscribers.
It is not available for individual sale.
It is not available for individual sale.
deterrents
host selection
plant volatiles
Spodoptera frugiperda
tactile cues