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PHEROMONE DISRUPTION CONTROLS DOUGLAS-FIR TUSSOCK MOTH (LEPIDOPTERA: LYMANTRIIDAE) REPRODUCTION AT HIGH INSECT DENSITIES1

Published online by Cambridge University Press:  31 May 2012

L. L. Sower ,
G. E. Daterman ,
C. Sartwell  and
W. Funkhouser
L. L. Sower
Affiliation:
Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, Cowallis, Oregon 97331.
G. E. Daterman
Affiliation:
Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, Cowallis, Oregon 97331.
C. Sartwell
Affiliation:
Albany International Company, ConRel Division, P.O. Box 516, Buckeye, Arizona 85326.
W. Funkhouser
Affiliation:
Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, Cowallis, Oregon 97331.
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Abstract

Hollow fibers containing synthetic pheromone (Z-6-heneicosen-11-one) were applied by helicopter to six plots of about 8 ha each. Douglas-fir tussock moth, Orgyia pseudotsugata (McDunnough), had reached such high population levels on the plots that trees in some areas were completely defoliated. Reproduction of the moths was reduced 71 and 81%, respectively, at dosages of 8 and 25 g of pheromone/ha relative to untreated control plots.

Résumé

Des fibres creuses contenant une phéromone synthétique (Z-6-heneicosen-11-one) ont été dispersées par hélicoptère dans six parcelles d'environ 8 hectares chacune. Les papillons de la chenille à houppes du Douglas, Orgyia pseudotsugata (McDunnough), avaient atteint dans les parcelles, des niveaux de populations tels que la défoliation était totale par endroits. La reproduction des papillons fut réduite de 71 à 81%, respectivement, aux dosages de 8 et de 25 g de phéromone par hectare, par rapport à des parcelles témoins.

Type
Articles
Information
The Canadian Entomologist , Volume 115 , Issue 8 , August 1983 , pp. 965 - 969
Copyright
Copyright © Entomological Society of Canada 1983

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References

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