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Effects of Moisture during Starvation of Larvae of the Pale Western Cutworm, Agrotis orthogonia Morr. (Lepidoptera: Phalaenidae)1

Published online by Cambridge University Press:  31 May 2012

L. A. Jacobson  and
P. E. Blakeley
L. A. Jacobson
Affiliation:
Crop Insect Section, Science Service Laboratory Lethbridge, Alberta
P. E. Blakeley
Affiliation:
Crop Insect Section, Science Service Laboratory Lethbridge, Alberta
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Extract

Larvae of the pale western cutworm, Agrotis orthogonia Morr., feed almost entirely below ground, attacking their food plants just below the soil surface. Larval movement and feeding usually occur at the interface between dry and moist soil. They can absorb moisture from the soil and also from the plants on which they are feeding.

In a previous investigation, Jacobson (1952) found that mortality from starvation varied directly with temperature and inversely with the size of larvae when the relative humidity was kept near 100 per cent. This paper is a report on the role of moisture during starvation.

Type
Articles
Information
The Canadian Entomologist , Volume 89 , Issue 10 , October 1957 , pp. 465 - 469
Copyright
Copyright © Entomological Society of Canada 1957

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References

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