1Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Minato, Tokyo 108-8477, 2Stock Enhancement Technology Development Center, National Research Institute of Aquaculture, Fisheries Research Agency, Saiki, Oita 879-2602, 3Stock Enhancement Technology Development Center-Komame Station, National Research Institute of Aquaculture, Fisheries Research Agency, Komame, Ootsuki, Kochi 788-0315, Japan
To determin the appropriate rearing conditions for early stage larvae of greater amberjack Seriola dumerili, we investigated the survival, growth, feeding and initial swim bladder inflation of larvae reared in two or three replicates in 500 L tanks under different photoperiods (0L: 24D, 12L: 12D, 18L: 6D, 24L: 0D) and water temperatures (22, 24, 26, 28°C). In the 0L: 24D group, few larvae showed feeding incidence and growth, and total mortality occurred 8 days after hatching. Photoperiod (12-24 hours light condition) and temperature did not affect the larval feeding and swim bladder inflation, whereas larval survival and growth were improved in the 18L: 6D group and larval survival was the best at 22°C.