Effect of Body Weight on Lethal Dose Estimates for the Western Spruce Budworm

$28.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Procedures for calculating lethal dose and confidence interval estimates for larvae of Choristoneura occidentalis Freeman of a given body weight based on multiple probit or logit regression techniques are described. Results of experiments with mexaearbate, pyrethrins. and DDT were similar for both probit and logit methods. Estimated LDs and their 95% confidence limits increased with increasing body weight. When the hypothesis of proportionality is rejected, use of the proportional model may produce estimates of LDs which are too low and 95% confidence limits which are too narrow, particularly in higher weight classes. These results suggest that topical application experiments should be done with a uniform application volume, and the hypothesis of porportional response should be tested. Since grouping tends to mask departures from proportionality in the data, the use of the basic model as a standard procedure for data analysis is recommended.

Document Type: Research Article

Publication date: June 1, 1982

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
  • Editorial Board
  • Submit a Paper
  • Subscribe to this Title
  • Information for Advertisers
  • Visit this journal's homepage
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more