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Studies on the Action of DDT on Anopheline Mosquitos and House-flies

Published online by Cambridge University Press:  10 July 2009

A. N. Johnston
A. N. Johnston
Affiliation:
Lecturer in Botany and Entomology, Hawkesbury Agricultural College, Richmond, N. S. W.
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Extract

Experimental results indicated that the mortality rate of Anophelines depends on the time of exposure. No evidence of differential reaction between the various stages of larvae was found.

Definite and positive evidence of the action of DDT on mosquito pupae was obtained.

Laboratory trials indicated that mortality of adult Anophelines following contact with DDT is relatively slow, and the period of exposure required for a lethal dose is approximately 15 minutes.

Adult flies required a much shorter period of exposure, viz., 30 secs., and the rate of mortality was higher.

Evidence of the mechanical transference of DDT by flies is also presented.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 40 , Issue 3 , December 1949 , pp. 447 - 452
Copyright
Copyright © Cambridge University Press 1949

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