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The relative potency of insecticides to tsetse flies assessed by two methods*

Published online by Cambridge University Press:  10 July 2009

J. R. Busvine ,
U. Abdurrahim  and
N. N. Mohammed
J. R. Busvine
Affiliation:
London School of Hygiene & Tropical Medicine
U. Abdurrahim
Affiliation:
London School of Hygiene & Tropical Medicine
N. N. Mohammed
Affiliation:
London School of Hygiene & Tropical Medicine
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Extract

The insecticidal Potencies of DDT, dieldrin, isobenzan, malathion, diazinon and arprocarb were assessed both by topical application of oil solutions to test insects any by exposing the latter to residues on glass, using young male and non-pregnant female adults of Glossina morsitans submorsitans Newst., G. austebi Newst., and Chrysomya putoria (Wied.).

By topical application, dieldrin and isobenzan were 10–23 times as potent as DDT, but their residues were on ly 2.2–6.3 times as effective; arprocarb was likewise more effective by topical application than as a residue, being, respectively, 9 and 3.5 times as effective as DDT. In contrast, diazinon, and, especially, malathion tended to be more efficient, relative to DDT, as residues than might be expected from application tests.

It is presumed that the difference between the ralative potency of an insecticide as a reesidue and as applied topically reflects the physical factors affecting contamination and penetration of the insect, but these matters have nor been stuided with tsetse flies.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 57 , Issue 2 , February 1967 , pp. 321 - 326
Copyright
Copyright © Cambridge University Press 1967

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References

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