Fig. 4. A comparison of temperature acclimation on the tonic and maximum adrenergic stimulation of the perfused sea bass heart preparation at 22°C (100 nmol l^–1 adrenaline; N=6) and 18°C (50 nmol l^–1 adrenaline; N=6). Relationships are presented for (A) cardiac output and (B) cardiac stroke volume V_SH to increasing filling pressure P_in, and (C) cardiac power output to output pressure P_out. Values are means ± s.e.m. (N=6). For clarity, significant differences are not included here, but are given in the other figures.