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Fig. 1. Two-dimensional representation of nutrient intake by normal unparasitized
M. sexta larvae (filled circles), and larvae parasitized by C.
congregata (open circles), maintained over the fourth and fifth stadia on
a chemically defined artificial diet having varying ratios of casein and
sucrose. Dotted lines are nutrient rails representing the trajectory of
nutrient intake expected for larvae feeding on the individual diets. Nutrient
intake points indicate actual nutrient intake (± S.E.M.).
Significant differences (P<0.05) in nutrient intake between normal
and parasitized larvae on the same diet are indicated by an asterisk. The
lines through individual intake points for normal and parasitized larvae are
the intake arrays. Development times for each dietary nutrient ratio are shown
in parentheses. Dietary nutrient ratios are shown relative to the level of
each nutrient (C, casein; S, sucrose) in the basal chemically defined
formulation where 1.0=90 g l-1.
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