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A METHOD OF DETECTING OVIPOSITION IN EUROPEAN CORN BORER MOTHS, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), AND ITS RELATION TO SUBSEQUENT LARVAL DAMAGE TO PEPPERS

Published online by Cambridge University Press:  31 May 2012

W.M. Elliott ,
R.J. McClanahan  and
J. Founk
W.M. Elliott
Affiliation:
Research Station, Agriculture Canada, Harrow, Ontario N0R 1G0
R.J. McClanahan
Affiliation:
Research Station, Agriculture Canada, Harrow, Ontario N0R 1G0
J. Founk
Affiliation:
Research Station, Agriculture Canada, Harrow, Ontario N0R 1G0
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Abstract

The formation of a yellow band inside the stalk of each ovariole was a good indicator that a female European corn borer had laid eggs. The absence of these bands was less reliable as an indicator that no eggs had been laid, probably due to the time taken for the bands to form. The numbers of moths accumulating in a light trap over a week at Harrow, Ontario, and the numbers of females estimated to have laid eggs correlated significantly with the numbers of larvae developing in nearby green pepper plots 3, 4, and 5 weeks later during second generation flights. This enabled linear equations for forecasting pepper damage to be developed, in which the dissection data was more useful than the total moth catch alone.

Type
Articles
Information
The Canadian Entomologist , Volume 110 , Issue 5 , 01 May 1978 , pp. 487 - 493
Copyright
Copyright © Entomological Society of Canada 1978

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