Fig. 5. (A) Examples for the different patterns of voltage fluctuations observed with isolated and perfused anterior stomach preparations of larval A. aegypti. (B) Representative example of the recordings of voltage fluctuations of the anterior stomach of A. aegypti larvae, showing their dependence on the presence of serotonin (N=7). Upper trace recorded in presence of serotonin (0.2 µmol l^–1), middle trace after its washout, and lower trace after re-establishing serotonin. (C) Representative example of the recordings of voltage fluctuations in absence of Aedae-HP-I and in presence of different concentrations of the peptide (N=5). Voltage traces from top to bottom: control, Aedae-HP-I 10^–8 mol l^–1; Aedae-HP-I 10^–6 mol l^–1; control after washout of Aedae-HP-I.