Fig. 4. Short-term dietary selection by the host Manduca sexta. Newly moulted fifth-instar larvae were conditioned for 1 day on a synthetic artificial diet containing sucrose without casein, or casein without sucrose (both nutrients at 120 g l–1), and subsequently given a choice of the two diets. (A,B) The percentage of normal larvae (A) and parasitized larvae (B) choosing the protein (squares) and carbohydrate (triangles) diets following conditioning on the protein diet. (C,D) The percentage of normal (C) and parasitized (D) larvae choosing the protein and carbohydrate diets following conditioning on the carbohydrate diet. Each graph shows the distribution of 20 larvae.
