The effect of acclimation temperature on ventricle size.

<p>Cold (4°C) acclimated male rainbow trout had larger ventricle to body mass ratios compared to warm acclimated (17°C) male trout but not control (12°C) trout. Furthermore, cold acclimated male trout had larger ventricle to body mass ratios compared to female trout. Trout were acclimated for a minimum of 2 months, <i>N</i> = 15. Relative ventricular mass: ((heart mass / body mass) * 100). Values are mean ± SEM. Brackets, if present indicate significant differences between sexes at the same acclimation temperature. Different letters above the bars indicate significant difference between acclimation groups. Different letters within the bars for male fish indicate significant differences between acclimation temperatures (p<0.05).