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Survival, Development, and Fecundity of the Pale Western Cutworm, Agrotis orthogonia Morr. (Lepidoptera: Noctuidae), After Starvation1

Published online by Cambridge University Press:  31 May 2012

L. A. Jacobson  and
P. E. Blakeley
L. A. Jacobson
Affiliation:
Canada Agriculture Research Station, Lethbridge, Alberta
P. E. Blakeley
Affiliation:
Canada Agriculture Research Station, Lethbridge, Alberta
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Extract

Larvae of the pale western cutworm, Agrotis orthogonia Morr., may be starved in the field by planned control (Seamans and Rock, 1945) or elimination of their food supply as a result of their own depredation. Starvation may occur at any time during the feeding period. Some effects of starvation on mortality, particularly in the early instars, have been reported (Jacobson, 1952). Larvae that were fed only two hours each day had an additional instar, developed more slowly, and were smaller (McGinnis and Kasting, 1959). Starvation during the fourth instar when the larvae were fed on various foods resulted in smaller pupae, and the size and fecundity of females were directly associated with pupal size (Jacobson and Blakeley, 1958).

Type
Articles
Information
The Canadian Entomologist , Volume 92 , Issue 3 , March 1960 , pp. 184 - 188
Copyright
Copyright © Entomological Society of Canada 1960

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References

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