Figure 3. Decomposition of probability histograms of feeding appendage beating duration into sampling and grazing modes.

Probability histograms of the duration of feeding appendage beating of A. tonsa: (a) sampling with no prey with 4 ms bins and (b) on an S. major diet with 40 ms bins. The solid line in (a) is the log-normal least square fit. (c) The 0–200 ms part of the histogram shown in (b) divided to 4 ms bins, along with the log-normal fit to the 0–100 ms range, which is terminated at 200 ms, and used as a model for sampling duration. (d) The conjectured grazing histogram on S. major diet obtained by subtracting the modeled sampling duration PDF shown in (c) from the data in (b). The solid line is the log-normal fit to the grazing duration histogram.