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| Effect of photoperiod regime on the growth performance, survival, swim bladder inflation and vertebral anomalies of pikeperch (Sander lucioperca) larvae in recirculating aquaculture systems (RAS) Panana, E.; Deceuninck, G.; Teerlinck, S.; Adriaens, D. (2024). Effect of photoperiod regime on the growth performance, survival, swim bladder inflation and vertebral anomalies of pikeperch (Sander lucioperca) larvae in recirculating aquaculture systems (RAS). J. Appl. Aquacult. Latest Articles: 19. https://dx.doi.org/10.1080/10454438.2023.2290705
In: Journal of Applied Aquaculture. Food Products Press: Binghamton, NY. ISSN 1045-4438; e-ISSN 1545-0805, meer
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Brak water; Zoet water |
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| Abstract |
The effect of photoperiod on the growth performance, survival rate, swim bladder inflation (SBI) and presence of vertebral anomalies was evaluated in pikeperch larvae reared under intensive production in a recirculating system (RAS). Three different photoperiods were tested from 1 to 30 days post hatch, 12:12 LD, 16:8 LD and 24:0 LD. Larvae were stocked with an initial density of 100 larvae per liter, light intensity of 100 lx and 16.0°C water temperature. The SGR among treatments ranged between 11.17 and 12.04% day−1. The highest survival rate (56.7 ± 2.4%) was found in 24:0 LD with a negative effect on the number of larvae with SBI. The highest presence of vertebral anomalies at 30 dph was found in 24:0 LD (40.8 ± 8.2%) compared to 12:12 LD (2.5 ± 1.4%) and 16:8 LD (1.7 ± 1.6%). These results suggest that constant light compromises culture of pikeperch larvae in RAS. A 16:8 LD photoperiod seems suitable for the growth performance, SBI and low vertebral anomalies at this life stage. |
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