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The rearing and biology of the mahogany shoot borer Hypsipyla robusta Moore (Lepidoptera: Pyralidae) on an artificial medium

Published online by Cambridge University Press:  19 September 2011

S. K. N. Atuahene  and
D. Souto
S. K. N. Atuahene*
Affiliation:
Forest Products Research Institute, Kumasi, Ghana
D. Souto
Affiliation:
Forest Products Research Institute, Kumasi, Ghana
*
*Correspondence to: S. K. N. Atuahene, Forest Products Research Institute, University, P.O. Box 63, Kumasi, Ghana.
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Abstract

Three consecutive generations of Hypsipyla robusta Moore (Lepidoptera: Pyralidae) were reared on the McMorran–Grisdale Diet (MGD) medium. Mortality rates among the older larvae were consistently low (less than 1.0%) but high (up to 50%) in the first instar stage which was due primarily to escapism and non-feeding. Developmental period from egg to adult was not adversely affected by the artificial diet and ranged between 29 and 41 days. However, a comparison of numbers of larval instars and pupal sizes indicated that the nutritional quality of the MGD and natural food sources differed appreciably. A longterm study to evaluate the usefulness of the MGD for planned mass rearing programmes of H. robusta is recommended.

Keywords

Hypsipyla robusta Mooreartificial mediumrearing procedurefertility and egg depositionlarval instarsparasitismmortality
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 4 , Issue 4 , December 1983 , pp. 319 - 325
Copyright
Copyright © ICIPE 1983

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References

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