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Effect of Area of Search on Reproduction of Encarsia formosa Gahan (Hymenoptera: Chalcidoidea)1

Published online by Cambridge University Press:  31 May 2012

T. Burnett
T. Burnett
Affiliation:
Entomology Laboratory, Belleville, Ontario
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Extract

In an earlier laboratory study (Burnett, 1958) influences of various types of host distribution on the efficiency of the chalcid parasite Encarsia formosa Gahan were determined. A constant number of parasites searched among five host densities for scales of the greenhouse whitefly, Trialeurodes vaporariorum (Westw.), that were distributed in three patterns over a 25-square-inch surface. In addition to the increased parasitism resuItIng from contagious distributions of the host, it was found that approximately the same percentage of each of the five different host densities within the same distribution was attacked by the parasite.

Type
Articles
Information
The Canadian Entomologist , Volume 90 , Issue 4 , April 1958 , pp. 225 - 229
Copyright
Copyright © Entomological Society of Canada 1958

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References

Burnett, T. 1958. Effect of host distribution on the reproduction of Encarsia formosa. Canadian Ent.CrossRefGoogle Scholar
Thompson, W. R. 1939. Biological control and the theories of the interactions of populations. Parasitology 31: 299–388.CrossRefGoogle Scholar