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Table 1.

Body size, swimming speed range, rate of oxygen uptake regression equations and low-speed observations for the 12 bonito studied

Slow speed observations
Fish numberFL (cm)Mass (g)Speed range (cm s−1)Regression equation for O2 (exponential fit)rElevated O2*Erratic swimming
45.0 1130 60-120 y=66.0e0.0214x 0.94 
46.5 1180 60-100 y=123e0.011x 0.59 
49.0 1430 60-90 y=0.90e0.0168x 0.67 − − 
45.5 1270 50-100 y=155e0.0091x 0.72 
44.5 1021 50-70 ND − 
46.5 1150 50-80 y=3.99e0.0361x 0.92 
46.0 1110 50-60 ND − − − 
50.0 1490 60-100 y=188e0.0083x 0.90 
49.5 1280 60-90 y=0.90e0.0168x 0.67 
10 46.0 1060 60-110 y=41.3e0.027x 0.97 − − 
11 47.5 1190 50-110 y=225e0.008x 0.70 
12 45.0 980 50-70 ND  
Slow speed observations
Fish numberFL (cm)Mass (g)Speed range (cm s−1)Regression equation for O2 (exponential fit)rElevated O2*Erratic swimming
45.0 1130 60-120 y=66.0e0.0214x 0.94 
46.5 1180 60-100 y=123e0.011x 0.59 
49.0 1430 60-90 y=0.90e0.0168x 0.67 − − 
45.5 1270 50-100 y=155e0.0091x 0.72 
44.5 1021 50-70 ND − 
46.5 1150 50-80 y=3.99e0.0361x 0.92 
46.0 1110 50-60 ND − − − 
50.0 1490 60-100 y=188e0.0083x 0.90 
49.5 1280 60-90 y=0.90e0.0168x 0.67 
10 46.0 1060 60-110 y=41.3e0.027x 0.97 − − 
11 47.5 1190 50-110 y=225e0.008x 0.70 
12 45.0 980 50-70 ND  

FL, fork length; O2, rate of oxygen uptake.

ND, Equation and r-value were not determined for individuals swimming at fewer than 3 different speeds.

*

Elevated O2:the O2 at the slowest speed was not the lowest value recorded for that fish. For details,see text.

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