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Figure 1


Fig. 1. (A) Oxygen consumption (VO2), (B) respiratory rate (fR), (C) tidal volume (VT), (D) ventilation rate (VI) and (E) oxygen extraction (EO2) for young-at-foot (YAF; open squares; N=7) and mature female (filled triangles; N=7) red kangaroos at three different ambient temperatures. Letters denote significant differences (SNK; P<0.05) within each age class; a, b, c for the YAF, and x, y, z for the adult animals. Asterisks associated with the x-axis indicate significant differences between the YAF and adult red kangaroos at that ambient temperature (SNK, P<0.05). {dagger}Note: fR within the YAF and adult data was not significantly different between ambient temperatures –5°C and 25°C, but they showed a strong tendency to be higher (P=0.06) within each age group (see text).