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Fig. 2. Total excitatory responses of the medial (A,C) and lateral (B,D) sensilla
to stimulation with the control solution (i.e. 100 mmol l–1
KCl) or one of the carbohydrates: Polycose (100 mmol l–1),
maltose (200 mmol l–1), trehalose (200 mmol
l–1), fructose (200 mmol l–1), glucose (200
mmol l–1), sucrose (200 mmol l–1) and
myo-inositol (1 mmol l–1). We presented each carbohydrate in
the control solution. In panels A and B, we show the total number of spikes
elicited in the medial and lateral styloconic sensilla, across the initial 1 s
of stimulation. Within each panel, we compare means with a post-hoc test
(Tukey's HSD test); different letters (a, b, c or a combination of each) above
the bars indicate means that differ significantly from one another
(P
0.05). In panels C and D, we show concentration–response
functions for a range of inositol, glucose and sucrose concentrations in both
the medial and lateral styloconic sensilla. Each bar or symbol indicates mean
± s.e.m.; N=7–18 sensilla per tastant (each from a
different caterpillar).
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