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Fig. 8. Relative timing of kinematic events to measured peak fluid measured fluid
speeds. To account for variation in absolute speed of the event, all times are
shown normalized to TTPG. The time of each event is relative to the
time of 20% opening and expressed as a fraction of the time from 20% opening
to 95% opening (TTPG) so that both fast and slow strikes may be
compared in the analysis. Because of the definition of TTPG used, the
kinematic events of 20% PG and 95% PG are necessarily
located at 0 and 1, respectively. All other symbols and error bars show the
mean ± S.D. for all 42 feeding analyzed. Note
that peak fluid speed occurs at approximately the same time as 95% opening,
slightly preceding peak gape and peak protrusion. Events that have some
duration, such as mouth opening more than 20% or 95% and the prey entering are
represented as a filled bar with error bars (S.D.) for
the start and finish of these events.
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