Hostname: page-component-cb9f654ff-r5d9c Total loading time: 0 Render date: 2025-08-22T13:00:04.848Z Has data issue: false hasContentIssue false
  • English
  • Français

FURTHER OBSERVATIONS ON THE CHANGES TAKING PLACE IN THE CORN BORER POPULATION IN WESTERN ONTARIO*

Published online by Cambridge University Press:  31 May 2012

Geo. Wishart
Geo. Wishart
Affiliation:
Dominion Parasite Laboratory, Belleville, Ontario
Get access Rights & Permissions [Opens in a new window]

Extract

The seasonal history of an insect has an important relationship to the success or failure of any efforts to usr parasites in its control. In the work on parasites of thr European corn borer, Pyrausta nubilalis Hubn., over a period of years, the writer has had an opportunity to observe the changes which have taken place in the seasonal history of this insect in Western Ontario. It was shown by the writer (Wislwt, 1942, 1944) that there was a gradual and rather consistent increase in the proportion of the population which had two generations instead of one. The present paper presents further data pertinent to this subject.

Information

Type
Articles
Information
The Canadian Entomologist , Volume 79 , Issue 5 , May 1947 , pp. 81 - 83
Copyright
Copyright © Entomological Society of Canada 1947

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.)

Article purchase

Temporarily unavailable

References

REFERENCES

Arbuthnot, K. D.Strains of the European Corn Borer in the United States. Tech. Bull. No. 869, U. S. Dept. of Agr., March, 1944.Google Scholar
Beall, Geoffrey. Multiple Generation Pyrausta nubilalis Hubn. on Plants Other than Corn in Ontario. Seventy-fourth Ann. Rep. Ent. Soc. of Ontario, 1943.Google Scholar
Crawford, H. G. and Spencer, G. J.The European Corn Borer, P. nubilalis Hubn. Life History in Ontario. Journ. Econ. Ent., 15, June, 1922.CrossRefGoogle Scholar
Hodgson, B. E.The Host Plants of the European Corn Borer in New England. Tech. Bull. No. 77, U. S. Dept. of Agr. 1928.Google Scholar
Vance, Ailo M.Occurrence and Responses of a Partial Second Generation of the European Corn Borer in the Lake States. Journ. Econ. Ent., 32, Feb., 1939.Google Scholar
Wishart, Geo. Important Developments in the Corn Borer Parasite Situation. Seventy-third Ann. Rep. Ent. Soc. of Ontario, 1942.Google Scholar
Wishart, Geo. An Increase in the Multiple Generation of the European Corn Borer in Ontario and its relation to Parasite Establishment. Seventy-fourth Ann. Rep. Ent. Soc. of Ont., 1943.Google Scholar