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EFFECT OF AGE OF THE PUPARIUM OF THE APPLE MAGGOT, RHAGOLETIS POMONELLA (WALSH) (DIPTERA: TEPHRITIDAE), ON PARASITISM BY PHYGADEUON WIESMANNI SACHTL. (HYMENOPTERA: ICHNEUMONIDAE)

Published online by Cambridge University Press:  31 May 2012

Elmer A.C. Hagley ,
A.R. Biggs ,
G.E. Timbers  and
J. Coutu-Sundy
Elmer A.C. Hagley
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada L0R 2E0
A.R. Biggs
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada L0R 2E0
G.E. Timbers
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada L0R 2E0
J. Coutu-Sundy
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada L0R 2E0
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Abstract

The thickness of the wall of the puparium of the apple maggot, Rhagoletis pomonella (Walsh), increased as the puparium aged. The force required to pierce the wall of the puparium also increased with age, and this relationship was best described by a cubic polynomial. Increasing thickness and hardness of the wall of the puparium will likely influence the efficacy of the parasite Phygadeuon wiesmanni Sachtl.

Résumé

L’épaisseur de la paroi du puparium augmente en fonction de l’âge chez la Mouche de la pomme, Rhagoletis pomonella (Walsh). La force requise pour percer la paroi du puparium augmente aussi en fonction de l’âge et c’est une équation polynomiale du troisième degré qui décrit le mieux cette relation. L’épaisseur et la dureté de plus en plus grandes du puparium affectent probablement l’efficacité du parasite Phygadeuon wiesmanni Sachtl.

[Traduit par la rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 125 , Issue 4 , August 1993 , pp. 721 - 724
Copyright
Copyright © Entomological Society of Canada 1993

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