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PRECOCIOUS TERMINATION OF “OBLIGATORY” DIAPAUSE IN FIELD-COLLECTED PUPAE OF ANTHERAEA POLYPHEMUS

Published online by Cambridge University Press:  31 May 2012

A. Mansingh  and
B. N. Smallman
A. Mansingh
Affiliation:
Department of Biology, Queen's University, Kingston, Ontario
B. N. Smallman
Affiliation:
Department of Biology, Queen's University, Kingston, Ontario
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Abstract

Antheraea polyphemus Cramer pupae, collected in early August, were found to maintain adult development at room temperature and natural daylength of late August and early September. These pupae had almost no coldhardiness, and heavy mortality occurred in the group of pupae stored at 6 °C. On the other hand, the pupae of A. polyphemus collected in late September were in diapause and were perfectly coldhardy. The possible relationship between the date of pupation and the incidence of diapause, and its significance as a natural mortality factor, is discussed.

Type
Articles
Information
The Canadian Entomologist , Volume 100 , Issue 2 , February 1968 , pp. 134 - 139
Copyright
Copyright © Entomological Society of Canada 1968

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