Fig. 6. Straight lines fit to the displayed values for total lactate in bodies of supercooled hatchlings of the painted turtle describe rates of accumulation of this metabolic end-product at 0°C (), -4°C () or -8°C (). Animals that were held for 25 days at -8°C () were probably dead at the point in time when they were sampled, so data for these turtles were not used in computing the regression line for that temperature. The regression lines, which were forced through the origin, have the following equations: lactate at 0°C=0.035 mgxday; lactate at -4°C=0.306 mgxday; lactate at -8°C=1.462 mgxday. Figure reproduced from Hartley et al. (2000).