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. 2021 Feb 22;10:e64317. doi: 10.7554/eLife.64317

Figure 7. Coding of bitter compounds in the female foreleg of Drosophila suzukii and related species.

(A) Heat map of electrophysiological responses to bitter compounds. n = 5–17. Responses to the diluent control, tricholine citrate (TCC), were subtracted. (B) Sample electrophysiological traces. Strychnine nitrate salt (STR) elicits little, if any, response from f5v in Drosophila melanogaster and D. suzukii but elicits a response from f5v in Drosophila biarmipes. (C) Coumarin (COU) elicits response from f4s in D. melanogaster and D. biarmipes but elicits little, if any, response from f4s in D. suzukii. (D) N,N-Diethyl-meta-toluamide (DEET) elicits a response from f5b in D. melanogaster and D. biarmipes but elicits little, if any, response from f5b in D. suzukii.

Figure 7—source data 1. Responses in spikes/s of tarsal sensilla of three species to bitter compounds.
Values represent the mean ± SEM responses of spikes/s. n = 5–17. Responses to the diluent control, tricholine citrate (TCC), were subtracted.

Figure 7.

Figure 7—figure supplement 1. Clustering of taste sensilla in the last two tarsal segments of the female foreleg into functional classes in all three species.

Figure 7—figure supplement 1.

Cluster analysis, based on the bitter compounds and the sensilla tested in Figure 7, using Ward’s method. The diluent control was subtracted from each response. Values are taken from Figure 7 and Figure 7—source data 1.