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. 2022 Nov 18;11:e81703. doi: 10.7554/eLife.81703

Figure 3. Electrophysiological responses to sugars.

All sugars were tested at 100 mM concentrations. (A) Taste sensilla of the labellum. Figure 3A is reproduced from Figure 3D by Dweck et al., 2021. (B) Sample traces from the indicated sensilla. (C–K) Responses to the indicated sugar of each sensillum of each morphological class: S=small; L=large; I=intermediate. (L) Taste sensilla on the three distal tarsal segments of the female foreleg; the map is the same for D. suzukii and D. melanogaster. (M–O) Responses to the indicated sugar of each of the indicated tarsal sensilla. n=5-10 for responses≥5 spikes/s; otherwise, n=3-10. Error bars are SEM.

Figure 3.

Figure 3—figure supplement 1. Dose dependence of sucrose responses.

Figure 3—figure supplement 1.

(A) Sample traces of the L8 sensillum to the indicated sucrose concentrations in each species. (B) Dose dependence of the firing frequency of the L8 sensillum of each species. ns, not significant. *p<0.05. n=5–10. The Mann-Whitney test is used to compare the spike rates between species. (C) Dose dependence of the firing frequency of the L8 sensillum of each species, taken from panel (B). ns, not significant. *p<0.05; **p<0.01; ***p<0.001. The Mann-Whitney test is used to compare the spike rates between different concentrations. (D) Sample traces from the f5s sensillum to the indicated sucrose concentrations in each species. (E) Dose dependence of the firing frequency of the f5s sensillum of each species. ns, not significant. *p<0.05; **p<0.01. n=6–10. The Mann-Whitney test is used to compare the spike rates between species. (F) Dose-dependence of firing frequency of the f5s sensillum of each species, taken from panel (E). ns, not significant. *p<0.05; ***p<0.001; ****p<0.0001. The Mann-Whitney test is used to compare the spike rates between different concentrations. (G and H) Egg-laying preferences for the indicated sucrose concentrations of D. melanogaster (G) and D. suzukii (H). Each egg-laying preference index is compared to 0 using the Wilcoxon signed-rank test. n=18–20. ns, not significant; *p<0.05; **p<0.01; ***p<0.001; ****p<0.0001. Error bars are SEM.