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Fig. 9. DPIV data from 42 feeding sequences from three bluegill showing that time to peak gape (TTPG) is closely related to peak fluid speed (FS; measured at 1/2PG in front of the fish on the centerline), illustrating one mechanism of enhancing fluid speed during suction. Individual #1, peak FS1/2PG=4.6 xTTPG–0.86 (r2=0.86); Individual #2, peak FS1/2PG=4.0 xTTPG–0.84 (r2=0.84); Individual #3, peak FS1/2PG=4.2 xTTPG–0.80 (r2=0.92); pooled data from all 42 feedings from three individuals, peak FS1/2PG=4.5 xTTPG–0.85 (r2=0.87); speed, m s–1; time, ms.





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