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BIOASSAY OF SEX PHEROMONES IN THE ARMY CUTWORM, EUXOA AUXILIARIS; THE PALE WESTERN CUTWORM, AGROTIS ORTHOGONIA; AND THE EUXOA TRISTICULA (LEPIDOPTERA: NOCTUIDAE)

Published online by Cambridge University Press:  31 May 2012

D. L. Struble
D. L. Struble
Affiliation:
Research Station, Agriculture Canada, Lethbridge, Alberta
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Abstract

Euxoa auxiliaris (Grote) females yielded the largest amount of extractable pheromone after they were stored at least 44 days at 10 °C and then 7 days at room temperature. The males would not respond to the pheromone until they were 28 to 37 days of age and their clearest responses were between 2 and 4 h of the dark cycle. Agrotis orthogonia Morrison females produced pheromone within 1 day after emergence and 2-day-old males responded to it between 5 and 7.5 h of the dark cycle when the olfactometer background light intensity was 0.35 lux. Female Euxoa tristicula Morrison produced pheromone 3 days after emergence and the males responded between 3 to 5 h of the dark cycle.

Type
Articles
Information
The Canadian Entomologist , Volume 109 , Issue 3 , March 1977 , pp. 365 - 368
Copyright
Copyright © Entomological Society of Canada 1977

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