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Effects of Defoliation on Survival of Larvae of the Larch Sawfly Pristiphora erichsonii (Htg.)1

Published online by Cambridge University Press:  31 May 2012

W. G. H. Ives
W. G. H. Ives
Affiliation:
Forest Entomology Laboratory, Box 6300, Winnipeg 1, Manitoba
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Abstract

The searching behaviour of fifth-instar larch sawfly larvae on artificially defoliated tamarack branches and trees is discussed. Local defoliation is shown to be capable of causing appreciable mortality among early-instar larvae if feeding damage by earlier colonies forces them to wander in search of food. Air temperature affects the distance and rate of such larval movement. A considerable proportion of dislodged fifth-instar larvae are able to reach foliage and resume feeding on nearby host trees.

Type
Articles
Information
The Canadian Entomologist , Volume 95 , Issue 8 , August 1963 , pp. 887 - 892
Copyright
Copyright © Entomological Society of Canada 1963

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References

Heron, R. J. 1951. Notes on the feeding of larvae of the larch sawfly, Pristiphora erichsonii (Htg.) (Hymenoptera: Tenthredinidae). Ann. Rep. Ent. Soc. Ont. 82: 67–70.Google Scholar
Heron, R. J. 1955. Studies of the starvation of last-instar larvae of the larch sawfly, Pristiphora erichsonii (Htg.) (Hymenoptera: Tenthredinidae). Canad. Ent. 87: 415–527.CrossRefGoogle Scholar
Ives, W. G. H. 1960. Developmental rates of larch sawfly (Pristiphora erichsonii (Htg.)) larvae in an insectary and in field shelters. Canad. Ent. 92: 668–674.CrossRefGoogle Scholar
Turnock, W. J. 1960. Ecological life-history of the larch sawfly, Pristiphora erichsonii (Htg.) (Hymenoptera: Tenthredinidae), in Manitoba and Saskatchewan. Canad. Ent. 92: 500–516.CrossRefGoogle Scholar
Wellington, W. G., Sullivan, C. R. and Henson, W. R.. 1954. The light reactions of larvae of the spotless fall webworm, Hyphantria textor Harr. (Lepidoptera: Arctiidae). Canad. Ent. 86: 529–542.CrossRefGoogle Scholar
Wellington, W. G. 1957. Individual differences as a factor in population dynamics: the development of a problem. Canad. J. Zool. 35: 293–323.CrossRefGoogle Scholar