Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-04T18:16:44.174Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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