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The African yam bean seed lectin affects the development of the cowpea weevil but does not affect the development of larvae of the legume pod borer by Jesse S. Machuka; Oladapo G. Okeola; Maarten J. Chrispeels; Louis E.N. Jackai is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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Arti®cial feeding assays were used to study the eect of puri®ed galactose-speci®c lectins from African yam beans (Sphenostylis stenocarpa ) on development of larvae of the cowpea weevil, Callosobruchus maculatus (Coleoptera: Bruchidae) and the legume pod-borer, Maruca vitrata (Lepidoptera: Pyralidae). Inhibition of development of C. maculatus was observed when larvae were fed on arti®cial cowpea seeds containing 0.2%, 2.0% and 5.0% (wt/wt) of dietary lectin. Larval mortality was between 30% and 88%, while delays in total developmental time ranged between 7 and 13 days. The lectin had no eect on development of larvae of M. vitrata, when tested through topical arti®cial diet incorporation assays, except at the extremely high dose of 35% dietary level.

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Author

Jesse S. Machuka; Oladapo G. Okeola; Maarten J. Chrispeels; Louis E.N. Jackai

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0031-9422)

Published

2000

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)