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DIAPAUSE DEVELOPMENT OF SPRUCE BUDWORM LARVAE, CHORISTONEURA FUMIFERANA (CLEM.) (LEPIDOPTERA: TORTRICIDAE), AT TEMPERATURES FAVOURING POST-DIAPAUSE DEVELOPMENT

Published online by Cambridge University Press:  31 May 2012

Er-Ning Han  and
Eric Bauce
Er-Ning Han
Affiliation:
Faculté de foresterie et de Géomatique, C.R.B.F., Université Laval, Ste-Foy, Québec, Canada G1K 7P4
Eric Bauce
Affiliation:
Faculté de foresterie et de Géomatique, C.R.B.F., Université Laval, Ste-Foy, Québec, Canada G1K 7P4
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Requirements for diapause development of larvae of Choristoneura fumiferana have been generally believed to be met by temperatures of 2°C or below for a period ranging from 14 to 20 weeks (see review by Sanders 1991), whereas those favourable for post-diapause development were shown to be above 11°C (Régnière 1990). However, we noticed that a large number of larvae completed diapause after 10 weeks at 18°C without any cold storage. The following experiment was carried out to confirm this result.

Type
Articles
Information
The Canadian Entomologist , Volume 128 , Issue 1 , February 1996 , pp. 167 - 169
Copyright
Copyright © Entomological Society of Canada 1996

References

Han, E.-N., and Bauce, E.. 1993. Physiological changes and cold hardiness of spruce budworm larvae, Choristoneura fumiferana (Clem.), during pre-diapause and diapause development under laboratory conditions. The Canadian Entomologist 125: 1043–1053.CrossRefGoogle Scholar
Harvey, G.T. 1954. Absence of diapause in rearings of the spruce budworm. Canada Department of Agriculture, Forest Biology Division, Bi-monthly Progress Report 10: 1.Google Scholar
Harvey, G.T. 1957. The occurrence and nature of diapause-free development in the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae). Canadian Journal of Zoology 35: 549–572.CrossRefGoogle Scholar
Hodek, I., and Hodkova, M.. 1988. Multiple role of temperature during insect diapause: A review. Entomologia experimentalis et applicata 49: 153–165.CrossRefGoogle Scholar
Régnière, J. 1990. Diapause termination and changes in thermal responses during postdiapause development in larvae of the spruce budworm, Choristoneura fumiferana. Journal of Insect Physiology 36: 727–735.CrossRefGoogle Scholar
Sanders, C.J. 1991. Biology of North American spruce budworms. pp. 579–620 in van der Geest, L.P.S., and Evenhuis, H.H. (Eds.), Tortricid Pests, their Biology, Natural Enemies and Control. Elsevier Science Publishers B.V., Amsterdam, The Netherlands. 808 pp.Google Scholar