Activity of a Juvenile Hormone Analogue as a Protectant Against the Lesser Grain Borer, rhizopertha Dominica (F.) (Coleoptera: Bostrichidae)

  • Jane N. Mkhize
Research Article


The juvenile hormone analogue (JHA) 6’, 7’,-epoxy-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 F, 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.

Key Words

Juvenile hormone analogue survival Rhizopertha dominica progeny reproduction metamorphic defects ecdysial failure intermediates crumpled wings morphogenetic abnormalities metamorphosis 


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 blé complet n’avalent pas toxique aux insectes adultes, mais ils ont réduit efficacement la F1 génération moins de grain ennuyer, Rhizopertha dominica (F.). Cependant les applications d’actualité de deux demi ppm (v/v) de la JHA a empêché la métamorphose normal de la larvae et chrysalide; toot les insectes expérimenter ont mort dû à l’anomalie morphogénétique a persuadé du traitement avec la JHA.

Mots Clés

L’enfant hormone analogue survivre Rhizopertha dominica reproduction progéniture le défaut metamorphique l’échec de la transformation les ailes écrasent de l’intermédiaire l’anomalie morphogénétique a empêché la métamorphose 


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Copyright information

© ICIPE 1992

Authors and Affiliations

  • Jane N. Mkhize
    • 1
  1. 1.University of TranskeiTranskeiSouth Africa

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