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THRESHOLD TEMPERATURE FOR SPRUCE BUDWORM PUPAL DEVELOPMENT (LEPIDOPTERA: TORTRICIDAE)

Published online by Cambridge University Press:  31 May 2012

A. W. Thomas
A. W. Thomas
Affiliation:
Maritimes Forest Research Centre, Canadian Forestry Service, Fredericton, New Brunswick
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Extract

A frequently used method for determining the threshold temperature for insect development is based on the expression for the hyperbola and its reciprocal (Bean 1961). This method has certain disadvantages, the major one being that the developmental velocity curve is sigmoid and the selection of a linear portion of this curve has a subjective element (Morris and Fulton 1970).

Information

Type
Articles
Information
The Canadian Entomologist , Volume 108 , Issue 11 , November 1976, pp. 1223 - 1224
Copyright
Copyright © Entomological Society of Canada 1976

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References

Bean, J. L. 1961. Predicting emergence of second-instar spruce budworm larvae from hibernation under field conditions in Minnesota. Ann. ent. Soc. Am. 54: 175–177.CrossRefGoogle Scholar
Morris, R. F. and Fulton, W. C.. 1970. Models for the development and survival of Hyphantria cunea in relation to temperature and humidity. Mem. ent. Soc. Can. 70.Google Scholar
Sanders, C. J. 1975. Factors affecting adult emergence and mating behavior of the eastern spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae). Can. Ent. 107: 967–977.CrossRefGoogle Scholar