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Table 3.

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

GroupVariableCoefficientPOverall r2
DBC NS    
WBC NS    
WYP BSI 1.55 <0.05 0.53 
 log10Ls 1.88 <0.001  
 Tw 0.0180 <0.05  
 ARc -1.14 <0.01  
GroupVariableCoefficientPOverall r2
DBC NS    
WBC NS    
WYP BSI 1.55 <0.05 0.53 
 log10Ls 1.88 <0.001  
 Tw 0.0180 <0.05  
 ARc -1.14 <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.

NS, no significance found for any variable.

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