Figure 1.

Nutritional landscapes illustrating the effects of daily protein (P) and carbohydrate (C) intake on the expression of the three male sex pheromones, (A) 3H2B, (B) 2MT, and (C) 4E2M, and (D) clutch size and (E) gestation time in females. High values of these reproductive traits are given in red and low values in blue. Black dots represent the intake of these nutrients by individual cockroaches. The blue crosses (yellow in the case of gestation time) on each landscape represent the mean (±SE) intake of nutrients in each of the diet pairs, with the number corresponding to the specific diet pair. The white crosses on each landscape represent the regulated intake point (±SE), calculated as the mean daily intake of P and C across diet pairs.