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REPELLENCY OF WHEAT GERM EXTRACTS PREPARED WITH PEROXIDE-CONTAINING ETHER TO ADULTS OF TRIBOLIUM CONFUSUM (COLEOPTERA: TENEBRIONIDAE)1

Published online by Cambridge University Press:  31 May 2012

A. J. McGinnis  and
S. R. Loschiavo
A. J. McGinnis
Affiliation:
Research Station, Canada Department of Agriculture, Winnipeg, Manitoba
S. R. Loschiavo
Affiliation:
Research Station, Canada Department of Agriculture, Winnipeg, Manitoba
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Abstract

The fat soluble components of raw wheat germ were extracted with diethyl ether, and the extracts assayed for aggregant or arrestant activity with adults of the confused flour beetle, Tribolium confusum. Some extracts elicited a strong response, others had little effect, and still others were repellent. The concentration of peroxide in the ether was shown to be inversely correlated with the aggregating response evoked by the extract. In the preparation of extracts of biological material, therefore, solvents other than ether should be used unless the peroxide component is completely eliminated immediately before use.

Information

Type
Articles
Information
The Canadian Entomologist , Volume 105 , Issue 1 , January 1973 , pp. 133 - 137
Copyright
Copyright © Entomological Society of Canada 1973

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References

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