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Table 2.

Individual regression equation variables for mass-specific rate of oxygen consumption(sV̇O2) against heart rate (fH) for seven marine iguanas from Santa Cruz Island,Galapagos, at 27 °C and 36 °C

Variable
Iguana numberMass (kg)Nabr2SbSaSy.x X̄ P
Iguanas at 27 °C           
Ig1 1.35 6 -0.5644 0.0175 0.8131 0.0042 0.2038 0.0965 47.667 0.0014 
Ig2 1.73 6 -0.1479 0.0090 0.9600 0.0009 0.0399 0.0249 42.167 0.0143 
Ig3 1.15 6 -0.3824 0.0136 0.9931 0.0006 0.0263 0.0138 45.333 0.0004 
Ig4 1.18 6 -0.2945 0.0122 0.9552 0.0013 0.0658 0.0351 48.667 0.0022 
Ig5 1.38 6 -0.5175 0.0142 0.8672 0.0028 0.1563 0.0546 55.667 >0.0001 
Ig6 1.90 6 -0.2883 0.0116 0.8389 0.0026 0.1128 0.0542 43.333 >0.0001 
Ig7 1.05 6 -0.4526 0.0145 0.8930 0.0025 0.1302 0.0624 51.000 0.0229 
Pooled regression  42 -0.2983 0.0117 0.7945 0.0009 0.0459 0.0651 47.690 >0.0001 
Group regression  7 -0.3610 0.0130 0.8598 0.0009 0.0480 0.0571 47.690 0.0180 
Iguanas at 36 °C           
Ig1  6 -0.5908 0.0117 0.9397 0.0015 0.1277 0.0622 84.167 0.0140 
Ig2  5 -0.3777 0.0093 0.8979 0.0018 0.1493 0.0841 80.000 0.0006 
Ig3  6 -0.5613 0.0110 0.9680 0.0010 0.0855 0.0443 83.167 >0.0001 
Ig4  6 -0.7883 0.0138 0.9240 0.0020 0.1791 0.0664 89.333 0.0008 
Ig5  6 -0.6607 0.0127 0.9742 0.0010 0.0885 0.0331 84.500 >0.0001 
Ig6  6 -0.5712 0.0112 0.9906 0.0005 0.0432 0.0174 78.167 0.0103 
Ig7  6 -0.5549 0.0099 0.7633 0.0028 0.2499 0.1073 89.000 0.0045 
Pooled regression  41 -0.5390 0.0108 0.8608 0.0007 0.0599 0.0737 84.146 >0.0001 
Group regression  7 -0.5606 0.0111 0.9060 0.0006 0.0577 0.0639 84.146 0.0150 
Variable
Iguana numberMass (kg)Nabr2SbSaSy.x X̄ P
Iguanas at 27 °C           
Ig1 1.35 6 -0.5644 0.0175 0.8131 0.0042 0.2038 0.0965 47.667 0.0014 
Ig2 1.73 6 -0.1479 0.0090 0.9600 0.0009 0.0399 0.0249 42.167 0.0143 
Ig3 1.15 6 -0.3824 0.0136 0.9931 0.0006 0.0263 0.0138 45.333 0.0004 
Ig4 1.18 6 -0.2945 0.0122 0.9552 0.0013 0.0658 0.0351 48.667 0.0022 
Ig5 1.38 6 -0.5175 0.0142 0.8672 0.0028 0.1563 0.0546 55.667 >0.0001 
Ig6 1.90 6 -0.2883 0.0116 0.8389 0.0026 0.1128 0.0542 43.333 >0.0001 
Ig7 1.05 6 -0.4526 0.0145 0.8930 0.0025 0.1302 0.0624 51.000 0.0229 
Pooled regression  42 -0.2983 0.0117 0.7945 0.0009 0.0459 0.0651 47.690 >0.0001 
Group regression  7 -0.3610 0.0130 0.8598 0.0009 0.0480 0.0571 47.690 0.0180 
Iguanas at 36 °C           
Ig1  6 -0.5908 0.0117 0.9397 0.0015 0.1277 0.0622 84.167 0.0140 
Ig2  5 -0.3777 0.0093 0.8979 0.0018 0.1493 0.0841 80.000 0.0006 
Ig3  6 -0.5613 0.0110 0.9680 0.0010 0.0855 0.0443 83.167 >0.0001 
Ig4  6 -0.7883 0.0138 0.9240 0.0020 0.1791 0.0664 89.333 0.0008 
Ig5  6 -0.6607 0.0127 0.9742 0.0010 0.0885 0.0331 84.500 >0.0001 
Ig6  6 -0.5712 0.0112 0.9906 0.0005 0.0432 0.0174 78.167 0.0103 
Ig7  6 -0.5549 0.0099 0.7633 0.0028 0.2499 0.1073 89.000 0.0045 
Pooled regression  41 -0.5390 0.0108 0.8608 0.0007 0.0599 0.0737 84.146 >0.0001 
Group regression  7 -0.5606 0.0111 0.9060 0.0006 0.0577 0.0639 84.146 0.0150 

The form of the equation is:sV̇O2 = a +fH×b.

N=number of data points for each regression, a=intercept, b=slope of the regression (regression coefficient), r2=coefficient of determination, Sb=standard error of b, Sa=standard error of a, Sy.x=standard error of estimate, X̄=mean value of fH (heart rate).

The pooled and group regressions for the data at each temperature are also given.

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