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Table 2.

Results from stepwise, multiple linear regression analyses of the effects of body size, water temperature and morphological characters on the absolute swimming cost index

GroupVariableCoefficientPOverall r2
DBC BSI 1.49 <0.001 0.43 
 log10Ls 1.24 <0.005  
WBC BSI 2.25 <0.05 0.56 
WYP BSI 0.920 <0.05 0.63 
 log10Ls 1.61 <0.001  
 Tw 0.0152 <0.005  
 ARc -0.756 <0.01  
GroupVariableCoefficientPOverall r2
DBC BSI 1.49 <0.001 0.43 
 log10Ls 1.24 <0.005  
WBC BSI 2.25 <0.05 0.56 
WYP BSI 0.920 <0.05 0.63 
 log10Ls 1.61 <0.001  
 Tw 0.0152 <0.005  
 ARc -0.756 <0.01  

DBC, domestic brook charr; WBC, wild brook charr; WYP, wild yellow perch; BSI,body shape index; Ls, standard length; Tw, water temperature; ARc aspect ratio of caudal fin.

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