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Figure 5


Fig. 5. (A–C) Log–log plots of cycle frequency for maximal muscle power output versus cranial length. Observations of in vivo cycle frequency for three individuals inferred from high-speed X-ray videos are also shown (black circles). The scaling relationship predicted by inverse dynamic suction modelling (speed scales with L–0.533) (Van Wassenbergh et al., 2005a) is also illustrated (black line). Note the apparent breakpoint in the scaling relationship for the m-hyp (A) in which only fish greater than 60 mm show a significantly negative slope in this scaling relationship. Since no data on in vivo m-hyp strain during feeding are available, the intercept of the scaling regression predicted by modelling could not be determined in A. Table 1 gives additional regression statistics. Abbreviations: m-a-m, musculus adductor mandibulae A2A3'; m-hyp, hypaxials; m-pr-h, protractor hyoidei.





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