Abstract
Atlantic salmon parr, Salmo salar, were reared in dark green or light grey tanks under a dual photoperiod, consisting of a constant background illumination (LD 24:0) from incandescent bulbs and additional light simulating a natural photoperiod (LDN). Additional light was either yellow light from incandescent bulbs or artificial daylight from fluorescent tubes. There were no significant differences in growth between groups in green or grey tanks, or between groups receiving additional light of different spectral composition. There were strong indications of smoltification in grey tanks, whereas in the green tanks the fish were not considered to be smolts.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
