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Fig. 11. The relative size of brains and brain regions is not a direct indicator of
energy consumption. (A) The average brain mass of elasmobranch fishes (E,
blue) weighing between 175 and 1250 g and teleost fishes (T, red) weighing
between 222 and 1170 g. (B) The specific activity of the
Na+/K+ ATPase (µmol min–1
g–1). (C) The total brain Na+/K+ ATPase
activity (µmol min–1). Data from Nilsson et al.
(Nilsson et al., 2000).