Florida Entomologist (2004) 87, 294-299

Peter J. Landolt, Richard S. Zack, D. Green and L. Decamelob (2004)
Cabbage looper moths (Lepidoptera: Noctuidae) trapped with male pheromone
Florida Entomologist 87 (3), 294-299
Abstract: Traps in field plots assessed attraction of the cabbage looper moth, Trichoplusia ni (Hübner), to lures emitting synthetic chemicals identified as the pheromone of the male; linalool, p-cresol and m-cresol. Male and female cabbage looper moths were captured in traps baited with racemic linalool, but significantly greater numbers of both sexes were captured in traps baited with the 3-component blend. Virgin and mated female cabbage looper moths were captured, with up to 5 spermatophores per female in mated ones. Pheromone was dispensed from polypropylene vials, and numbers of moths captured in traps increased with the size of the hole in the vial lid, up to the maximum 25-mm diameter hole tested. Rates of release of pheromone from vials with 25-mm diameter holes in the laboratory decreased from 4 to 3 milligrams per h over a four-week duration. This is the first evidence in the field of cabbage looper response to the chemicals identified as pheromones of the male.

Mediante trampas de campo se estimó la atracción de la palomilla del falso medidor, Trichoplusia ni (Hübner), a cebos que emiten linalool, p-cresol y m-cresol, químicos sintéticos identificados como la feromona del macho. Se atraparon machos y hembras de la palomilla del falso medidor en trampas cebadas con sólo linalool racémico, pero se atraparon números significativamente mayores de ambos sexos con la mezcla de los tres componentes. Se capturaron palomillas vírgenes y apareadas con hasta cinco espermatóforos por hembra. La feromona se expuso en viales de polipropileno y el número de palomillas capturadas por trampa se incrementó con el tamaño del orificio en la tapa del vial, hasta el máximo probado de 25 mm de diámetro. La tasa de liberación de la feromona de los viales con orificio de 25 mm en laboratorio disminuyó de 4 a 3 miligramos por hora en un periodo de cuatro semanas. Esta es la primera evidencia de campo de la respuesta de la palomilla del falso medidor a los químicos identificados como la feromona del macho.
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Database assignments for author(s): Peter J. Landolt

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Trichoplusia ni	Alfalfa/lucerne (Medicago sativa)	U.S.A. (NW)
	Trichoplusia ni	Maize/corn (Zea mays)