Abstract
Larvae of the saw-toothed grain beetle, Oryzaephilus surinamensis, were reared individually on meridic diets from hatching to adult emergence at 32±0·25°C and 75% r.h. These larvae developed little, if at all, and failed to carry out larval-pupal ecdysis on a diet devoid of leucine. Survival increased as the concentration of dietary l-leucine increased from 0·0 to 3·0 mg/g and rate of development, as l-leucine increased to 8·0 mg/g. With concentrations of dietary l-leucine greater than 8·0 mg/g, the rate of development of Oryzaephilus surinamensis decreased.
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