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Effect of protein fractions isolated from cereal grains on the development and survival of the cowpea weevil, Callosobruchus maculatus
L. B. S. Andrade, V. M. Q. Flores, M. P. Sales, R. A. Morais, A. Blanco-Labra, J. Xavier-Filho
Journal:

Insect Science and Its Application / Volume 16 / Issue 2 / June 1995

Published online by Cambridge University Press:

19 September 2011, pp. 171-176

Print publication:

June 1995
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The effect of protein fractions isolated from cereal grains on the development and survival of the bean weevil, Callosobruchus maculatus, was investigated using wheat, rice and maize. These cereals were fractionated into albumins, globulins, prolamins, glutelins and a residue. The fractions were incorporated in artificial seeds which were infested by C. maculatus. Survival (as indicated by LD50) and development (as indicated by WD50) of 20-day-larvae of the bruchid were negatively affected by most of the fractions. Rice globulins were the most detrimental and affected both the survival and development of the larvae, while wheat albumins and globulins had a stronger effect on larval development than on survival. A previously isolated maize α-amylase/trypsin inhibitor showed an LD50 of 1.5% to Callosobruchus maculatus.