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EFFECT OF AN INSECT GROWTH REGULATOR ON NON-TARGET ARTHROPODS IN AN AERIAL APPLICATION AGAINST THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE), IN NEW BRUNSWICK, CANADA

Published online by Cambridge University Press:  31 May 2012

B. Sechser  and
I. W. Varty
B. Sechser
Affiliation:
Ciba-Geigy Ltd., Agrochemicals Division, 4002 Basle, Switzerland
I. W. Varty
Affiliation:
Maritimes Forest Research Centre, Canadian Forestry Service, Fredericton, New Brunswick
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Abstract

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Airplane application of the insect growth regulator CGA 13353, a juvenile hormone mimic used experimentally against spruce budworm, Choristoneura fumiferana (Clem.), did not drastically reduce percentage parasitism in field samples of that host, but there was some evidence of susceptibility. Exploratory sampling of maple defoliators suggested that one species and its parasitoids suffered some mortality, but another species and its parasitoids did not. The treatment did not influence the viability of ant colonies.

Résumé

L’application par avion de CGA 13353, régulateur de la croissance des insectes et imitation d’hormone juvénile, fut essayée contre la Tordeuse des bourgeons de l’Epinette, Choristoneura fumiferana (Clem.) mais cette substance n’a pas réduit drastiquement le pourcentage de parasitisme dans l’hôte. On a cependant relevé des preuves de vulnérabilité. Contre certains défoliateurs de l’Erable, des premières expériences ont porté à croire que chez une espèce et ses parasitoïdes il se produisit une certaine mortalité, mais une autre espèce et ses parasitoïdes ne furent pas affectés. Le traitement n’a pas affecté les colonies de fourmis.

Type
Articles
Information
The Canadian Entomologist , Volume 110 , Issue 6 , 01 June 1978 , pp. 561 - 567
Copyright
Copyright © Entomological Society of Canada 1978

References

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