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PERIODICITY IN THE RESPONSIVENESS OF MALE SPRUCE BUDWORM (LEPIDOPTERA: TORTRICIDAE) TO SYNTHETIC SEX ATTRACTANT

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 E3B 5P7
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Extract

Past experiments concerned with the elucidation of the daily activity pattern of male spruce budworm, Choristoneura fumiferana (Clem.), have used the response of males to virgin females as the criterion of activity. Males showed a peak response just after sunset and little activity in the early afternoon (Greenbank 1963; Sanders 1971a). Difficulty arises in interpreting such data in terms of male activity patterns. It is obvious that males are active after sunset; however, there is no way of knowing whether the reduced activity in the early afternoon is a result of changing response thresholds by the males or whether it is a result of the females releasing insufficient, if any, pheromone (see Morse et al. 1982). After the identification of the components of the female sex pheromone (Sanders and Weatherston 1976) a synthetic sex attractant was developed and the inherent daily activity pattern of male spruce budworm could be determined.

Type
Articles
Information
The Canadian Entomologist , Volume 115 , Issue 6 , June 1983 , pp. 713 - 714
Copyright
Copyright © Entomological Society of Canada 1983

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References

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