Hostname: page-component-77c89778f8-swr86 Total loading time: 0 Render date: 2024-07-24T06:36:34.755Z Has data issue: false hasContentIssue false
  • English
  • Français

Population and Mortality Assessment During the Egg and Larval Stages of the Larch Sawfly, Pristiphora erichsonii (Htg.)1

Published online by Cambridge University Press:  31 May 2012

W. G. H. Ives
Get access Rights & Permissions [Opens in a new window]

Extract

This contribution is the eighth in a series of papers on sampling techniques used in population studies of the larch sawfly (Ives, 1955; Ives and Prentice, 1958; Buckner, 1959; Ives, 1959; Ives and Prentice, 1959; Ives and Turnock, 1959; and Turnock, 1960). Although the greatest proportionate mortality usually occurs in the cocoon stage of this insect, the largest amount of mortality in terms of absolute numbers occurs between oviposition and the completion of larval feeding. This paper presents a method for estimating seasonal increments to the egg and larval populations and alternative methods for estimating mortality during these stages. Examples are also provided of the integration of these methods with previously developed techniques for estimating egg populations and foliage weight.

Type
Articles
Information
The Canadian Entomologist , Volume 94 , Issue 3 , March 1962 , pp. 256 - 268
Copyright
Copyright © Entomological Society of Canada 1962

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

Buckner, C. H. 1959. The assessment of larch sawfly cocoon predation by small mammals. Can. Ent. 91: 275–282.Google Scholar
Cochran, W. G. 1953. Sampling techniques. John Wiley & Sons, Inc., New York.Google Scholar
Heron, R. J. 1951. Notes on the feeding of larvae of the larch sawfly, Pristiphora erichsonii (Htg.) (Hymenoptera: Tenthredinidae). Eighty-Second Ann. Rept. Ent. Soc. Ont.: 67–70.Google Scholar
Ives, W. G. H. 1955. Estimation of egg populations of the larch sawfly, Pristiphora erichsonii (Htg.). Can. J. Zool. 33: 370–388.Google Scholar
Ives, W. G. H., and Prentice, R. M.. 1958. A sequential sampling technique for surveys of the larch sawfly. Can. Ent. 90: 331–338.Google Scholar
Ives, W. G. H., and Prentice, R. M.. 1959. Estimation of parasitism of larch sawfly cocoons by Bessa harveyi Tnsd. in survey collections. Can. Ent. 91: 496–500.CrossRefGoogle Scholar
Ives, W. G. H. 1959. A technique for estimating tamarack foliage production, a basis for detailed population studies of the larch sawfly. Can. Ent. 91: 513–519.Google Scholar
Ives, W. G. H., and Turnock, W. J.. 1959. Estimation of cocoon populations of the larch sawfly, Pristiphora erichsonii (Hartig). Can. Ent. 91: 650–661.Google Scholar
Ives, W. G. H. 1960. Developmental rates of larch sawfly (Pristiphora erichsonii (Htg.)) larvae in an insectary and in field shelters. Can. Ent. 92: 668–674.Google Scholar
Morris, R. F. 1955. The development of sampling techniques for forest insect defoliators, with particular reference to the spruce budworm. Can. J. Zool. 33: 225–294.CrossRefGoogle Scholar
Turnock, W. J. 1960. Estimation of adult populations of the larch sawfly, Pristiphora erichsonii (Htg.). Can. Ent. 92: 659–662.Google Scholar