Figure 1.
Regulation of feeding behavior in response to dietary modulation. (a) Volume of food ingested per fly over 24 h on four different medium concentrations at 25 °C (mean ± s.d. of four replicate samples of 15 females each). Unpaired, two-tailed t tests: 1× versus 5×, P = 0.0001; 5× versus 10×, P = 0.0005; 10× versus 15×, P = 0.0003 (b) Net sucrose and yeast extract intake on the four nutritional conditions, in micrograms ingested per fly per 24 h (mean ± s.d.). Inset, actual nutrient intake (solid line) markedly differs from expected intake based on medium concentration only (dashed line).