Abstract
Larvae of Agria affinis select foodstuff according to its nutritional superiority. Synthetic foods offered, designated diets A, B, C, and D, differed only in the proportion of amino acid mixture/glucose, per cent, as follows: A, 1·125 1·5 ; B, 1·125 2·1 ; C, 0·75 1·5 ; D, 0·75 2·1 . In group choice tests and in their capacity to promote rapid growth and development of individually-reared larvae, these diets ranked in the same order A > B > C > D. Analysis showed that the amino acid level and the glucose level determined the effects on growth and development and on the choice of food. It is concluded that nutrient balance is a prime factor determining food selection in this insect.
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