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Fig. 4. Multi-dimensional profiles illustrating the effects of nutrient consumption
on growth (mass gain) by normal unparasitized M. sexta larvae and
larvae parasitized by C. congregata, maintained over the fourth and
fifth stadia on a chemically defined artificial diet having varying ratios of
casein and sucrose. (A,C) Three-dimensional models for normal and parasitized
larvae. (A) Normal: F=49.04, P<0.0001,
r2=0.9491; (B) parasitized: F=148.38,
P<0.0001, r2=0.9624. (B,D). Contour maps for
normal and parasitized larvae, respectively. Nutrient rails shown for the
individual diets. Actual mass gain by individual larvae indicated by filled
circles.