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Activity of a juvenile hormone analogue as a protectant against the lesser grain borer, Rhizopertha dominica (F.) (Coleoptera: Bostrichidae)

Published online by Cambridge University Press:  19 September 2011

Jane N. Mkhize
Affiliation:
University of Transkei, Private Bag XI, Unitra, Transkei, South Africa
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Abstract

The juvenile hormone analogue (JHA) 6′, 7′,-epxy-3, 7′-dimethyl-undec-2′-enyl 6-ethyl-3-pyridyl ether at 10 ppm (v/v) applied to whole wheat grains was not toxic to adult insects, but effectively reduced the F1 generation of the lesser grain borer, Rhizopertha dominica (F.). However, topical applications of 4 ppm (v/v) of the JHA prevented normal metamorphosis of the larvae and pupae; all the test insects died due to morphogenetic abnormalities induced by treatment with the JHA.

Résumé

L'enfant hormone analogue (JHA) 6′, 7′-epoxy-3, 7′-dimethyl-undec-2′-enyl 6-ethyl-3-pyridyl ether, à 10 ppm (v/v) est appliqué aux grains bié complet n'avalent pas toxtque aux insectes adultes, mais lls ont réduit efficacement la F1, generation moins de grain ennuyer, Rhizopertha dominica (F.). Cependant les applications d'actualité de deux deml ppm (v/v) de la JHA a empéché la metamorphose normal de la larvae et chrysalide; toot les insectes experimenter ont mort du à l'anomalie morphogénétlque a persuade du traitement avec la JHA.

Type
Research Articles
Copyright
Copyright © ICIPE 1992

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References

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