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Fig. 8. Strike precision in bluegill. Observed strike starting distance is the
distance between the prey's eye and the center of the fish's mouth at the
moment of strike initiation (initiation of gape expansion). The distance of
maximal force was estimated by calculating the expected force achieved, with
the observed kinematics, for strike starting distances between 0.5 and 20 mm,
in 0.5 mm intervals. The distance of maximal force (defined as the distance
associated with the highest peak force) was not significantly different than
the observed strike initiation distance (average 1.9±3.6 mm; RM-ANOVA
F1,3=2.9, P>0.1). The distance associated with
the maximal peak force was linearly correlated with the observed distance
(average R2=0.49±0.25; average
slope=0.85±0.22; N=4 fish). Diagonal line represents the case
of X=Y.
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