The Company of Biologists

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

Group	Variable	Coefficient	P	Overall r²
DBC	BSI	1.49	<0.001	0.43
	log₁₀L_s	1.24	<0.005
WBC	BSI	2.25	<0.05	0.56
WYP	BSI	0.920	<0.05	0.63
	log₁₀L_s	1.61	<0.001
	T_w	0.0152	<0.005
	AR_c	-0.756	<0.01

Group	Variable	Coefficient	P	Overall r²
DBC	BSI	1.49	<0.001	0.43
	log₁₀L_s	1.24	<0.005
WBC	BSI	2.25	<0.05	0.56
WYP	BSI	0.920	<0.05	0.63
	log₁₀L_s	1.61	<0.001
	T_w	0.0152	<0.005
	AR_c	-0.756	<0.01

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

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