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. 2015 Oct 21;145(12):2789–2796. doi: 10.3945/jn.115.222380

FIGURE 3.

FIGURE 3

Effect of food pH on palatability and total consumption in Drosophila males (Expt. 4). (A) Effect of food pH and diet on PER [n = 10 (sucrose + buffer) or 22 (buffer) flies per group]. (B) Effect of sodium chloride or sodium acetate on PER (n = 10 flies per group). (C) Effect of food pH on total consumption as measured by radioisotope labeling [n = 8 (Canton-S) or 4 (Dahomey) vials per group]. (D) Effect of food pH on total consumption as measured by CAFE assay (n = 4 chambers per group). (E) Effect of food pH on total consumption of YE diet as measured by radioisotope labeling (n = 12–14 vials per group). Values are mean ± SEM. Labeled means within each series without a common letter differ, P < 0.05. CAFE, capillary feeder; D, diet; NaCl, sodium chloride; NaOAc, sodium acetate; PER, proboscis extension response; YE, yeast extract.