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Figure 2


Fig. 2. Mechanical load affects the frequency but not the shape of the swimming gait. (A) The wavelength of the undulating gait of swimming worms does not vary with mechanical load. Here, we quantify the wavelength {lambda} as a fraction of the total length of the body centerline. (B) The temporal frequency of the undulating gait of swimming worms drops with increasing mechanical load. (C) The mean power of the swimming gait calculated using Eqn 1 increases with swimming gait. The sublinear dependence (0.7 slope in a log-log plot) may be attributed to the drop in the temporal frequency of the swimming gait. Each measurement corresponds to data from 10-15 worms and 30-60 s of video (means ± 1 s.e.m.). Solid lines represent linear regression fits.