International Journal of Tropical Insect Science

, Volume 4, Issue 4, pp 415–416 | Cite as

Susceptibility of Tribolium Confusum Jacquelin Duval to an Insect Growth Regulator with Juvenile Hormone-Like Effects

  • Jane N. Mkhize


—The insect growth regulator, 6’,7’-epoxy-3’-ethyl-7’-methyl-dec-2’-enyl 6-ethyl-3-pyridyl ether, at lOppm applied to rearing media, did not prevent oviposition or hatchability of the eggs of Tribolium confusum. The insect growth regulator (IGR) apparently had no effects on the development of younger larvae, and no morphological abnormalities were observed in these instars. However, the IGR prevented metamorphosis of the last larval instar. These larvae continued to moult several times, became larger than larvae in untreated food, but failed to pupate; as a result, no adults emerged from the treatments.

Key Words

Insect growth regulator IGR oviposition egg-hatchability Tribolium confusum morphological abnormalities susceptibility last larval instar inhibit metamorphosis 


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Copyright information

© ICIPE 1983

Authors and Affiliations

  • Jane N. Mkhize
    • 1
  1. 1.National University of LesothoLesothoSouth Africa

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