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Incidence of larval and pupal parasitoids of Lepidoptera in Uganda with special reference to new associations

Published online by Cambridge University Press:  28 February 2007

I. Rwomushana ,
S. Kyamanywa ,
A.J. Ngi-Song  and
C.O. Omwega
I. Rwomushana*
Affiliation:
Department of Crop Science, Makerere University, PO Box 7062, Kampala, Uganda.
S. Kyamanywa
Affiliation:
Department of Crop Science, Makerere University, PO Box 7062, Kampala, Uganda.
A.J. Ngi-Song
Affiliation:
International Centre of Insect Physiology and Ecology, PO Box 30 772, Nairobi, Kenya.
C.O. Omwega
Affiliation:
International Centre of Insect Physiology and Ecology, PO Box 30 772, Nairobi, Kenya.
*
*:Email: irwomushana@icipe.org.
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Abstract

Cotesia flavipes Cameron (Hymenoptera: Braconidae) was introduced in Uganda in 1998 for the biological control of the old association cereal stemborer Chilo partellus (Swinhoe) (Lepidoptera: Crambidae). However there is little information on whether this parasitoid will attack new association Lepidoptera, which in turn may have implications on its efficacy on Ch. partellus. This study investigated the incidence of introduced Co. flavipes on Ch. partellus, and new association lepidopteran species and associated effects on its efficacy. Parasitism levels for Co. flavipes in several locations varied between 13.7–34.8% and 1.5–18.8% on Ch. partellus and new association hosts, respectively. Implications for biological control of stemborers in Uganda are discussed.

Keywords

Cotesia flavipesnew association LepidopteraChilo partellusstemborersbiological control
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 25 , Issue 4 , December 2005 , pp. 274 - 280
Copyright
Copyright © ICIPE 2005

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