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Figure 3


Fig. 3. Relationship between the metabolic power requirements of swimming and swimming speed for bluegill sunfish. Filled symbols, total metabolic power, Pgross; open symbols, Pnet (total metabolic power minus standard metabolic rate); black symbols, labriform swimming; red symbols, undulatory swimming. Data are fitted with the following power relationships: labriform Pgross=0.47+6.45U2.02; undulatory Pgross=0.61+29.6U3.17; labriform Pnet=0.12+3.29U1.57; undulatory Pnet=0.35+37.4U3.47, where U is swimming speed in m s–1. The broken lines show 95% confidence intervals for the fitted relationships. Values are means ± s.e.m., N=9, except where the speed ranges for labriform and undulatory swimming overlap at 0.25 m s–1, where N=4 for labriform swimming and N=5 for undulatory swimming.





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