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Toxicity of chlordimeform to the tsetse fly Glossina morsitans

Published online by Cambridge University Press:  19 September 2011

R. W. Pimley
Affiliation:
Tsetse Research Laboratory, School of Veterinary Science, University of Bristol, Langford House, Langford, Bristol BS18 7DU, England
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Abstract

Chlordimeform (CDM), tested by topical application, was found to be toxic to both male and female tsetse with the maximum effect some 72 hr after treatment. Median lethal doses were approx. 0.4 μg/fly for unfed adult tsetse of both sexes, 100% mortality at 72 hr was achieved with 2 μg/fly. Mature fed females were less susceptible to chlordimeform, the median lethal dose for 72 hr being 12.5 μg/fly. High doses of chlordimeform depressed the weight of puparia from survivors, but had no effect upon fecundity. Sublethal doses caused a significant depression of feeding activity, but did not cause hyperactivity or disrupt fat body lipid reserves.

Résumé

Il a été montré que le chlordimeforme appliqué sur la peau des tsétsé males et femelles était toxique, avec un affect maximum 72 hr après le traitment. Les doses mortelles médianes étaient approximativement de 0.4 μg/mouche pour les mouches adultes des 2 sexes non-nourries, une mortalité de 100% était atteinte après 72 hr avec 2 μg/mouche. Les femelles mûres nourries étaient moins susceptibles au chlordimeforme, la dose médiane mortelle pour 72 hr étant 12.5 μg/mouche. Des doses fortes de chlordimeforme causaient une diminution du poids des chrysalides de mouches qui survivaient mais n'avaient aucun effet sur la fécondité. Des doses non-mortelles causaient une dimunution significative des activités alimentaire, mais ne causaient pas une hyperactivité ou une diminution de réserves de graisses dans le corps.

Type
Research Articles
Copyright
Copyright © ICIPE 1986

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