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DOSAGE RESPONSE OF THE STAGES OF CODLING MOTH, LASPEYRESIA POMONELLA (LEPIDOPTERA: OLETHREUTIDAE), TO FUMIGATION WITH METHYL BROMIDE1

Published online by Cambridge University Press:  31 May 2012

A. P. Gaunce ,
H. F. Madsen ,
R. D. McMullen  and
J. W. Hall
A. P. Gaunce
Affiliation:
Research Station, Agriculture Canada, Summerland, British Columbia V0H 1Z0
H. F. Madsen
Affiliation:
Research Station, Agriculture Canada, Summerland, British Columbia V0H 1Z0
R. D. McMullen
Affiliation:
Research Station, Agriculture Canada, Summerland, British Columbia V0H 1Z0
J. W. Hall
Affiliation:
Research Station, Agriculture Canada, Vancouver, British Columbia V6T 1X2
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Abstract

Probit analysis of the dosage response of codling moth stages to methyl bromide indicated that adults were most, and pupae, least susceptible. Eggs were more resistant than cocooned larvae which were more resistant than larvae in fruit. There were no differences in susceptibility of the larval instars to methyl bromide. The rate recommended to kill larvae in fruit (32 g/m3 for 2 h) also killed eggs.

Résumé

L’analyse probit de la réaction de stades de croissance du carpo-capse de la pomme à diverses doses de bromure de méthyle révèle que les adultes sont les plus sensibles et les pupes, les moins sensibles. Les oeufs sont plus résistants que les larves en cocons, lesquelles le sont plus que les larves nues dans les fruits. Les stades larvaires ne montrent aucune différence de sensibilité. La dose recommandée pour tuer les larves dans le fruit (32 g/m3 pendant 2 heures) détruit également les oeufs.

Type
Articles
Information
The Canadian Entomologist , Volume 112 , Issue 10 , 01 October 1980 , pp. 1033 - 1038
Copyright
Copyright © Entomological Society of Canada 1980

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References

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