Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-14T04:47:35.306Z Has data issue: false hasContentIssue false
  • English
  • Français

Some Factors Influencing the Occurrence and Size of the Midsummer Flight of the European Corn Borer, Ostrinia nubilalis (Hbn.) (Lepidoptera: Pyralidae), in Southwestern Ontario1

Published online by Cambridge University Press:  31 May 2012

J. A. Mutchmor
J. A. Mutchmor
Affiliation:
Entomology Laboratory, Chatham, Ontario
Get access Rights & Permissions [Opens in a new window]

Extract

In southwestern Ontario the European corn borer, Ostrinia nubilalis (Hbn.), produces two flights annually. The first flight, beginning in June, consists of moths from larvae that have overwintered. The midsummer, or second, flight begins late in July or early in August, and its moths are the progeny of the first flight. Until about 20 years ago the borer produced only one annual flight and was thought to be univoltine. The change in the seasonal history of the borer in Ontario was described by Wressell (1953) and Miller (1956). The literature describing similar changes in parts of the United States has been reviewed by Lees (1955) and Everett et al. (1958). Wressell (1953) summarized light trap collection data of moth flights in the Chatham, Ontario, area for the years 1932 to 1951. The summary includes the percentage of the moths that were from the midsummer flight, and it is evident that the size of this flight varies greatly from year to year. Aside from its intrinsic interest, it would be of some economic value to know what governs the size of the midsummer flight. This is a report of studies undertaken to examine the case, and to relate the findings to the larger problem of why the borer now produces a second flight where formerly it produced only one.

Type
Articles
Information
The Canadian Entomologist , Volume 91 , Issue 12 , December 1959 , pp. 798 - 806
Copyright
Copyright © Entomological Society of Canada 1959

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

Arbuthnot, K. D. 1944. Strains of the European corn borer in the United States. U.S.D.A. Tech. Bull. No. 869.Google Scholar
Arbuthnot, K. D. 1949. Temperature and precipitation in relation to the number of generations of European corn borer in the United States. U.S.D.A. Tech. Bull. No. 987.Google Scholar
Babcock, K. W. 1927. The European corn borer, Pyrausta nubilalis (Hbn.). 1. A discussion of its dormant period. Ecology 8: 45–59.Google Scholar
Beck, S. D., Lilly, J. H., and Stauffer, J. F.. 1949. Nutrition of the European corn borer, Pyrausta nubilalis (Hbn.). 1. Development of a satisfactory purified diet for larval growth. Ann. Entomol. Soc. Am. 42: 483–496.CrossRefGoogle Scholar
Everett, T. R., Chiang, H. C., and Hibbs, E. T.. 1958. Some factors influencing populations of European corn borer (Pyrausta nubilalis (Hbn.)) in the North Central States. Resistance of corn, time of planting, and weather conditions. Univ. of Minnesota Agr. Expt. Sta. Tech. Bull. No. 229; North Central Regional Pub. No. 87.Google Scholar
Lees, A. D. 1955. The physiology of diapause in arthropods. Cambridge University Press.Google Scholar
Messenger, P. S. 1959. Bioclimatic studies with insects. Ann. Rev. of Entomol. 4: 183–206.CrossRefGoogle Scholar
Miller, L. A. 1956. Changes in insect populations in southwestern Ontario. Ann. Rept. Entomol. Soc. Ontario 87 (1955): 15–19.Google Scholar
Mutchmor, J. A., and Beckel, W. E.. 1958. Importance of temperature and photoperiod in inducing diapause in the European corn borer, Pyrausta nubilalis (Hbn.). Nature 181: 204.CrossRefGoogle Scholar
Mutchmor, J. A., and Beckel, W. E.. 1959. Some factors affecting diapause in the European corn borer, Ostrinia nubilalis (Hbn.) (Lepidoptera: Pyralidae). Can. J. Zool. 37: 161–168.Google Scholar
O'Kane, W. C., and Lowry, P. R.. 1927. The European corn borer: Life history in New Hampshire, 1923–1926. New Hampshire Agr. Expt. Sta. Tech. Bull. No. 33.Google Scholar
Prebble, M. L. 1941. The diapause and related phenomena in Gilpinia polytoma (Hartig). 1. Factors influencing the inception of diapause. Can. J. Res. 19: 295–322.CrossRefGoogle Scholar
Vance, A. M. 1939. Occurrence and responses of a partial second generation of the European corn borer in the Lake States. J. Econ. Ent. 32: 83–90.CrossRefGoogle Scholar
Wressell, H. B. 1953. Increase of the multivoltine strain of the European corn borer, Pyrausta nubilalis (Hbn.) (Lepidoptera: Pyralidae), in southwestern Ontario. Ann. Rept. Entomol. Soc. Ontario 83 (1952): 43–47.Google Scholar