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A DESCRIPTION OF CAGES USED FOR THE LARGE-SCALE BREEDING OF STURMIA SP., A TACHINID PARASITE OF SAWFLIES*

Published online by Cambridge University Press:  31 May 2012

H. Coppel  and
H. House
H. Coppel
Affiliation:
Dominion Parasite Laboratory, Belleville, Ontario.
H. House
Affiliation:
Dominion Parasite Laboratory, Belleville, Ontario.
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Extract

In the establishment of insect parasites, the production of large numbers for release in heavily infested areas is often desirable. This was especially true in the case of parasites of the European spruce sawfly, Gilpinia hercyniae Htg. The rapid increase in numbers nad extent of the sawfly infestation in Canada with the resulting losses in timber as reported by Balch (1940) and Baird (1940) created a situation of grave concern, and the need for rapid colonization of insect parasites as part of the general control programme was considered urgent. Of the parasites chosen for introduction, the tachinid Sturmia sp. was considered very promising. Following initial establishment of this species, it was decided that an attempt should be made to propagate it in numbers sufficient for widespread distribution either by improving the methods in use at that time or by devising radically different methods.

Type
Articles
Information
The Canadian Entomologist , Volume 79 , Issue 4 , April 1947 , pp. 74 - 80
Copyright
Copyright © Entomological Society of Canada 1947

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References

REFERENCES

Baird, A. B. 1940. A review of the spruce sawfly situation. Pulp and Paper Magazine of Canada, January.Google Scholar
Balch, R. E. 1940. The spruce sawfly outbreak in 1939. Pulp and Paper Magazine of Canada, February.Google Scholar
Webber, R. T. 1952. Sturmia inconspicua Meighen, a tachinid parasite of the gypsy moth. Journal of Agri. Res. 54: 193–208.Google Scholar
Wilkes, A. 1941. Notes on the laboratory propagation of three Europeah species of Exenterus (Ichneumonidae) parasitic on sawfllies. 72nd Annual Report of the Entomological Society of Ontario, 41–44.Google Scholar