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THE EFFECTS OF THE INSECTICIDES SUMITHION AND PHOSPHAMIDON ON POPULATIONS OF FIVE SPECIES OF CARABID BEETLES AND TWO SPECIES OF LYCOSID SPIDERS IN NORTHWESTERN ONTARIO1

Published online by Cambridge University Press:  31 May 2012

R. Freitag  and
F. Poulter
R. Freitag
Affiliation:
Department of Biology, Lakehead University, Thunder Bay, Ontario
F. Poulter
Affiliation:
Department of Biology, Lakehead University, Thunder Bay, Ontario
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Abstract

In the summer of 1969, one year following a spray program to control spruce budworm with Phosphamidon and Sumithion in northwestern Ontario, five species of carabids and two species of lycosids were studied to assess the long term effects of insecticide spray on forest floor arthropods. For 15 weeks in the summer of 1969, beetles and spiders were almost always more numerous in the control area than in the sprayed area. Populations of the spiders and beetles are briefly discussed.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 10 , October 1970 , pp. 1307 - 1311
Copyright
Copyright © Entomological Society of Canada 1970

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References

Freitag, R., Ozburn, G. W., and Leech, R. E.. 1969. The effects of Sumithion and Phosphamidon on populations of five carabid beetles and the spider Trochosa terricola in northwestern Ontario and including a list of collected species of carabid beetles and spiders. Can. Ent. 101 (12) : 1328–1333.CrossRefGoogle Scholar
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