Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-26T16:22:34.127Z Has data issue: false hasContentIssue false
  • English
  • Français

Diapause in Eggs of the Pale Western Cutworm Agrotis orthogonia Morr. (Lepidoptera: Noctuidae)

Published online by Cambridge University Press:  31 May 2012

L. A. Jacobson
L. A. Jacobson
Affiliation:
Canada Agriculture Research Station, Lethbridge, Alberta
Get access Rights & Permissions [Opens in a new window]

Extract

The eggs of the pale western cutworm. Agrotis orthogonia Morr., are laid in the soil between about August 15 and September 15, the peak of oviposition usually occurring hetween August 25 and September 5. The eggs commence development as soon as they are laid and in most years the embryos are fully developed by winter (Jacobson and Blakeley, 1958). Hatching occurs in the spring, usually soon after all snow has melted and the soil has thawed.

Type
Articles
Information
The Canadian Entomologist , Volume 94 , Issue 5 , May 1962 , pp. 515 - 522
Copyright
Copyright © Entomological Society of Canada 1962

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Andrewartha, H. G., and Birch, L. C.. 1954. The distribution and abundance of animals. The University of Chicago Press, Chicago, Ill., 782 pp.Google Scholar
Cook, W. C. 1930. Field studies of the pale western cutworm, Porosagrotis orthogonia Morr. Mont. Agr. Expt. Sta. Bull. 225.Google Scholar
Jacobson, L. A., and Blakeley, P. E.. 1958. Influences of temperature and moisture on hatching of eggs of the pale western cutworm, Agrotis orthogonia Morr. (Lepidoptera: Phalaenidae). Can. J. Plant Sci. 38: 127–134.CrossRefGoogle Scholar
Lindsay, I. S. 1954. Influence of temperature on embryonic development of the pale western cutworm, Agrotis orthogonia Morr. (Lepidoptera: Phalaenidae). Canadian Ent. 86: 557–661.CrossRefGoogle Scholar
Parker, J. R., Strand, A. L., and Seamans, H. L.. 1921. Pale western cutworm, (Porosagrotis orthogonia Morr.). J. Agr. Res. 22: 189–321.Google Scholar
Snedecor, G. W. 1956. Statistical methods. 5th ed. 534 pp. The Iowa State College Press, Ames, Iowa.Google Scholar
Way, M. J. 1959. The effect of temperature, particularly during diapause, on the development of the egg of Leptohylemyia coarctata Fallén (Diptera: Muscidae). Trans. R. Ent. Soc. Lond. 111: 351–364.CrossRefGoogle Scholar
Way, M. J. 1960. The effects of freezing temperatures on the developing egg of Leptohylemyia coarctata Fall. (Diptera: Muscidae) with special reference to diapause development. J. Ins. Physiol. 4: 92–101.CrossRefGoogle Scholar