Prolonged photoperiod improves the growth performance for a hatchery reared right-eyed flatfish

Casey, Paul; Butts, Ian A. E.; Zadmajid, Vahid; Sørensen, Sune Riis; Litvak, Matthew K.

doi:10.1016/j.aquaeng.2020.102089

Cited by 8 publications

(3 citation statements)

References 48 publications

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“…Similar results have been reported in other fish species, such as lenok (Brachymystax lenok) (Liu et al, 2015), pacamã catfish (Lophiosilurus alexandri) (Kitagawa et al, 2015), Amazonian ornamental (Heros severus) (Veras et al, 2016), zebrafish (Abdollahpour et al, 2020), and largemouth bass (Malinovskyi et al, 2022). However, in some fish, compared to LD, LL promoted somatic growth and feed utilization, e.g., Caspian roach (Rutilus rutilus caspicus) (Shahkar et al, 2015), gibel carp (Carassius auratus) (Wei et al, 2019), winter flounder (Pseudopleuronectes americanus) (Casey et al, 2020), Nile tilapia (Oreochromis niloticus) (Martıńez-Chavez et al, 2021). LL promotes somatic growth in fish mainly attributed to the suppression of gonadal development (Doyle et al, 2021), increased feed intake (Wei et al, 2019;Martıńez-Chavez et al, 2021), enhanced digestive enzyme activity (Shan et al, 2008;Ramzanzadeh et al, 2016), and upregulation of gene expression of growth-related hormones (growth hormone (GH) and insulin-like growth factor (IGF-1)) (Li et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Photoperiod-independent diurnal feeding improved the growth and feed utilization of juvenile rainbow trout (Oncorhynchus mykiss) by inducing food anticipatory activity

Shi

et al. 2022

Front. Mar. Sci.

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A three-month culture experiment was designed to assess the effects of photoperiod and feeding regime on growth, feed utilization, and food anticipatory activity (FAA) of juvenile rainbow trout. The experiment included two photoperiods: 24L:0D (LL) and 12L:12D (LD); three feeding regimes: random feeding (R), mid-dark stage feeding (D), and mid-light stage feeding (L). A total of six treatment groups (R-LL, D-LL, L-LL, R-LD, D-LD, L-LD) were defined. The experimental results showed that the growth and feed utilization of the scheduled feeding groups (D and L groups) were significantly higher than those of the R group under both photoperiods, and there was no statistical difference between the D and L groups. A typical FAA was observed in the L group, independent of the photoperiod. Also, the digestive enzyme activity of the L group was synchronized by the feeding time under both photoperiods. There were rhythms in serum levels of glucose (GLU), triglyceride (TG), and total-cholesterol (T-CHO) in the D and L groups. Serum GLU also had a rhythm in the R group, but the peaks occurred at the feeding point (LL group) or after the feeding point (LD group), reflecting a possible passive rise in GLU after feeding. Serum cortisol was higher in the R group than in the scheduled feeding group, indicating that random feeding caused stress to juvenile rainbow trout. Serum insulin levels were found to increase before feeding in all three feeding regimes, probably reflecting the anticipation of food induced by the last meal. Serum melatonin levels were suppressed by the LL group. Serum 5-HT levels were synchronized by meal time in the R and L groups. Finally, rhythms of appetite-related genes were observed under all three feeding regimes, and more genes were rhythmic under LL, suggesting that food can strongly synchronize the feeding rhythm of juvenile rainbow trout when lacking light zeitgeber. In summary, this study concluded that diurnal feeding (L group) independent of photoperiod induced typical FAA in juvenile rainbow trout and that the LD (12L:12D) photoperiod and L (mid-light phase) feeding were recommended in the juvenile rainbow trout aquaculture.

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Section: Discussionmentioning

confidence: 99%

Photoperiod-independent diurnal feeding improved the growth and feed utilization of juvenile rainbow trout (Oncorhynchus mykiss) by inducing food anticipatory activity

Shi

et al. 2022

Front. Mar. Sci.

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“…Heating water requires energy and the return from accelerated growth must appropriately exceed the cost of energy to heat the water. Although winter flounder is a slow‐growing species reaching market size in 2–3 years (Fairchild, 2010), production time can be decreased by rearing the fish at warmer temperatures and under continues light (Casey, Butts, Zadmajid, Sørensen, & Litvak, 2020). This study shows that the optimum temperature range for growth of 0 group winter flounder lies between 15 and 20°C.…”

Section: Discussionmentioning

confidence: 99%

Influence of temperature on growth and survival of juvenile winter flounder, Pseudopleuronectes americanus (Walbaum) reared under continuous light

Casey

Zadmajid

Butts

et al. 2020

J World Aquaculture Soc

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Winter flounder, Pseudopleuronectes americanus, has emerged as a promising candidate flatfish for cold‐water aquaculture and restocking. Here, juveniles were reared for 8 weeks at three temperatures: 10, 15, and 20°C under 24‐hr light. All fish were imaged at stocking and at 2‐week intervals, where growth was measured as changes in standard length (SL) and body area (BA). By week 2, fish reared at 15 and 20°C were larger than those grown at 10°C. At weeks 4 to 6, fish at 15°C were larger than fish at 20°C. Linear regressions were used to model growth dynamics over time at each temperature. Highly significant linear growth trajectories were detected over time for SL and BA. SL and BA regressions also showed a significant difference among the slopes across temperatures, where comparing slopes showed the best temperature to rear the flounder was 15°C. Weights of fish held at 15°C and 20°C were greater than at 10°C at the termination of the experiment. Within each temperature, the growth rate of malpigmented fish was not different from that of the normally pigmented fish. Overall, growth of winter flounder was comparable to that of other commercially produced flatfish species, providing strong evidence for this flatfish species as a potential species for aquaculture.

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“…According to the recent literature, it can be found that light plays an important role in the growth [1][2][3] , behavior [4][5][6] , and physiology [7][8][9] of aquatic animals. Numerous studies have investigated the significant impact of light on aquatic animals, such as the effect of light intensity [2,[10][11][12] , the light spectrum [9,13,14] , and photoperiod [3,15,16] . However, few studies about the effect of lighting mode on aquatic animals have been conducted.…”

Section: Introductionmentioning

confidence: 99%

Effects of lighting mode on the growth performance, cortisol level and oxidative stress of juvenile Chinese three-keeled pond turtle (Chinemys reevesii)

Li,

Guo,

Zhao

et al. 2023

International Journal of Agricultural and Biological Engineering

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To improve the light environment and welfare of the turtle cultured indoors, the effects of lighting mode on growth performance, cortisol level, and oxidative stress of juvenile Chinese three-keeled pond turtle, Chinemys reevesii, were investigated in this study. The experimental turtles with an initial weight of 5.61±0.09 g were reared in tanks under four different lighting modes: three groups with light (lighting the basking area and water area, LBW; lighting the water area only, LW; lighting the basking area only, LB) and control group (no light, NL). The experiment was conducted for more than six months, with each group having three replicates. After 203 d of the experiment, the turtle in the LW group exhibited higher weight gain rate (WGR) and a specific growth rate (SGR, %/d) compared to other treatments. Also, results showed that the final body weight of the turtle exposed to LW was higher than that exposed to other treatments. On the physiological level, serum cortisol level in turtles exposed to LW was significantly lower than that in other treatments. Regarding oxidative stress, the level of catalase (CAT) in turtles exposed to LW and LB was significantly lower than that exposed to LBW and NL. The malonaldehyde (MDA) activity in turtles exposed to LW was significantly lower than other treatments. Based on the growth performance and health status, it is suggested that lighting the water area only is the optimal lighting mode for the juvenile threekeeled pond turtle cultured indoors.

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Prolonged photoperiod improves the growth performance for a hatchery reared right-eyed flatfish

Cited by 8 publications

References 48 publications

Photoperiod-independent diurnal feeding improved the growth and feed utilization of juvenile rainbow trout (Oncorhynchus mykiss) by inducing food anticipatory activity

Photoperiod-independent diurnal feeding improved the growth and feed utilization of juvenile rainbow trout (Oncorhynchus mykiss) by inducing food anticipatory activity

Influence of temperature on growth and survival of juvenile winter flounder, Pseudopleuronectes americanus (Walbaum) reared under continuous light

Effects of lighting mode on the growth performance, cortisol level and oxidative stress of juvenile Chinese three-keeled pond turtle (Chinemys reevesii)

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