Growth history of Atlantic cod juveniles reared under continuous light (LD 24:0, red bars) or natural photoperiod conditions (LDN, blue bars) for six months.

Abstract

<p>Details of the light regimes are shown by red diamonds or green triangles for LD 24:0 and LDN groups, respectively. Sea water temperature is also indicated by blue circles. Significant differences in mean weight between the two light groups at a particular time point (two-tailed t-test, n = 123) are highlighted by an asterisk.</p