JEB -- Egginton et al. 205 (6): 769 Figure IG5

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Fig. 5. (A) The relationship between calculated mean fibre P_O₂ and fibre cross-sectional area (µm²) for notothenioids living at 0–20°C; the overall regression (not plotted) is P_O₂=6.31–0.002(fibre area) (r²=0.97). (B) The relationship between calculated mean fibre P_O₂ and total mitochondrial volume per unit length of fibre, V(mit,f), is V(mit,f)=Vv(mit,f)(fibre area), where V(mit,f) is mitochondrial volume density, for notothenioids living at 0–20°C; the overall regression (not plotted) is P_O₂=5.74–0.004V(mit,f) (r²=0.94).