Fig. 5. Comparison of timing and magnitude of the observed and calculated forces exerted by largemouth bass on tethered prey. Time 0 (A) is the first frame digitized in the image sequence (10 frames prior to the onset of gape, arbitrarily selected for each sequence). The timings of the observed and calculated peak force were linearly correlated (mixed-effects model, R²=0.659; F_1,23=50.6, P<0.001), with the timing for observed peak force preceding that of the expected force (slope=0.66). Similarly, the peak calculated force was correlated with the observed one (mixed-effects model, R²=0.68; F_1,23=55.74, P<0.001) and a slope of 1.02 (B). Different symbols represent data for the four fish studied, diagonal line represents the case of x=y.