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INTERACTION OF TEMPERATURE AND PHOTOPERIOD IN THE INDUCTION OF PROLONGED DIAPAUSE IN NEODIPRION SERTIFER

Published online by Cambridge University Press:  31 May 2012

C. R. Sullivan  and
D. R. Wallace
C. R. Sullivan
Affiliation:
Forest Research Laboratory, Canada Department of Forestry and Rural Develapment, Sault Ste. Marie, Ontario
D. R. Wallace
Affiliation:
Forest Research Laboratory, Canada Department of Forestry and Rural Develapment, Sault Ste. Marie, Ontario
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Abstract

Prepupae of Neodiprion sertifer (Geoff.) held in darkness at 21 °C undergo a short normal diapause if exposed as feeding larvae to long photoperiods, but have no diapause if reared in the larval stage under short photoperiods. If cocoons from short-day rearings are exposed to 10 °C instead of 21 °C, a small proportion of the prepupal larvae undergo the normal or short diapause, but the majority enter an intense or prolonged type of diapause which results in three clearly defined periods of adult emergence within the range of 160 to 800 days after cocoon spinning. Mortality increases directly with the prolonged cocoon periods associated with intense diapause at 10 °C and there is a progressive decrease in reproductive potential of the survivors. If cocoons are held at 29 °C normal diapause and morphogenesis are prolonged but there is no evidence that a state of intense diapause is induced. Mortality is extreme, however, and the reproductive potential of the survivors is greatly reduced.

The implication of these findings is discussed in relation to prolonged diapause in nature, a factor critical to the assessment of the seasonal history and population dynamics of the insect.

Type
Articles
Information
The Canadian Entomologist , Volume 99 , Issue 8 , August 1967 , pp. 834 - 850
Copyright
Copyright © Entomological Society of Canada 1967

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References

Danilevskii, A. S. 1965. Photoperiodism and seasonal development of insects. Oliver and Boyd Ltd., Edinburgh and London.Google Scholar
Geyspits, K. F. 1965. Photoperiodic and temperature reactions affecting the seasonal development of the pine moths Dendrolimus pini L. and D. sibiricus Tschetw. (Lepidoptera, Lasiocampidae). Ent. Rev. 44: 316–325. (Trans. from Entomologicheskoye Obozreniye 44: 538–553.)Google Scholar
Griffiths, K. J. 1959. Observations on the European pine sawfly, Neodiprion sertifer (Geoff.), and its parasites in southern Ontario. Can. Ent. 91: 501–512.CrossRefGoogle Scholar
Kangas, E. 1941. Beitrag Zur Biologie und Gradation von Diprion sertifer. Annls ent. fen. 7: 1–31.Google Scholar
Lees, A. D. 1955. The physiology of diapause in arthropods. Cambridge University Press, Cambridge, England.Google Scholar
McLeod, D. G. R., and Beck, S. D.. 1963. Photoperiodic termination of diapause in an insect. Biol. Bull. 124: 84–96.CrossRefGoogle Scholar
Sullivan, C. R., and Wallace, D. R.. 1965. Photoperiodism in the development of the European pine sawfly, Neodiprion sertifer (Geoff.). Can. J. Zool. 43: 233–245.CrossRefGoogle ScholarPubMed
Wallace, D. R., and Sullivan, C. R.. 1966. Geographic variation in the photoperiodic reaction of Neodiprion sertifer (Geoff.), Can. J. Zool. 44: 147.CrossRefGoogle Scholar
Wellso, S. G., and Adkisson, P. L.. 1966. A long-day short-day effect in the photoperiodic control of the pupal diapause of the bollworm, Heliothis zea (Boddie). J. Insect Physiol. 12: 1455–1465.CrossRefGoogle Scholar