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Larvicidal effects of neem, Azadirachta indica on fleas in Tanzania

Published online by Cambridge University Press:  19 September 2011

B. S. Kilonzo
B. S. Kilonzo
Affiliation:
Rodent Research Project, Sokoine University of Agriculture, P. O. Box 3110, Morogoro, Tanzania
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Abstract

Fourth instar larvae of laboratory-reared, Ctenocephalides felts and Xenopsylla. brasiliensis were exposed to 50% neem seed kernel extract (NSKE) for periods varying from 30 min to 24 hr. Mortality of larvae was observed from exposure periods of 2 hr and above in both species. At 24 hr exposure, 95.3% and 94.7% of C.felis and X. brasiliensis respectively were killed. LT50s were approximately 6 and 10.5 hr for C.felis and X. brasiliensis respectively. It was generally concluded that neem seed kernel extract was potentially larvicidal against the two flea species and that it could be effectively used for controlling the insects by properly dusting the latter's breeding sites with appropriate concentrations of the extract.

Résumé

Des larvae de quatrième stade de Ctenocephalides felis et Xenopsylla brasiliensis elevées au laboratoire ont été exposé aux extraits d'amandes du nim 50% (NSKE) pour un période variable de 30 min à 24 hr. La mortalité de larvae à été observé pour des périodes d'exposure de 2 hr et plus pour les deux espèces. A 24 hr d'exposure 95.3% et 94.7% de C.felis et X. brasiliensis respectivement ont été toué. On conclu généralement que l'extrait des amandes du nim était potentiellement larvicidal contre les deux espèces fleau et qu'il pourrait être effectivement utiliser pour controler les insectes par époussetage des l'eux de reproduction avec le concentration appropriée de l'extrait.

Keywords

NeemfleasXenopsylla brasiliensisCtenocephalides felis
Type
Part II: Symposium on Insect Pests and Sustainable Food Production: Pest Management, Strategies and Practices
Information
International Journal of Tropical Insect Science , Volume 12 , Special Issue 5-6: Aspects of Pest Management in Relation to Agricultural Production and Environmental Conservation in Africa , December 1991 , pp. 699 - 702
Copyright
Copyright © ICIPE 1991

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References

REFERENCES

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