Figure 5.

ATP exhibits long-term suppression of feeding and does not affect locomotion. (A) Bar chart of feeding activity of Trichoplax on green algae biofilms in normal conditions and with 0.1 mM ATP. Adding ATP to the dish with green algae increases ‘feeding’ activity at first and decreases after 6 h. In the experimental dish, ATP was added at 2 h. Asterisks denote a significant difference in feeding activity from the control (Welch t-test, ^*p < 0.05, ^**p < 0.01, ^***p < 0.001). N animals = 37 and 28 for ATP and control, respectively. (B) Tracks of animals incubated in 0.1 mM ATP for 3 h (right) and in control (left). No significant differences in track length, straightness, or displacement were found.