Manipulation of photoperiod in growth factors of beluga sturgeon Huso huso

Ghomi,; Nazari, R M; Sohrabnejad, Mehdi; Ovissipour, Mahmoudreza; Zarei, Moosa; Mola, AE; Makhdoomi, C; Rahimian, A; Noori, H; Naghavi, A

doi:10.5897/ajb09.1611

Afr. J. Biotechnol.

2010

DOI: 10.5897/ajb09.1611

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Manipulation of photoperiod in growth factors of beluga sturgeon Huso huso

Ghomi Ghomi¹,

R M Nazari²,

Mehdi Sohrabnejad³

et al.

Abstract: The beluga sturgeon is considered as the most important species for caviar production. This study aimed to evaluate effects of photoperiod manipulation on growth factors of beluga sturgeon.

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Cited by 6 publications

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European sturgeon (Acipenser sturio L.) young of the year performance in different rearing environments –study within a stocking program

2016

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The European sturgeon is critically endangered and the French ex-situ conservation approach involves developing a captive stock to produce offspring for release to boost natural populations. The purpose of our study was to assess the effects of rearing environment before stocking on the survival, growth, and behavior of threemonth-old sturgeons from two different crossings. Enriched rearing was designed to mimic the variability of the natural environment using river water, natural photoperiod, substrate, variable water current and depths. Traditional rearing was carried out with bare tanks, underground water, dark conditions, without current and at constant depth. Fish survival was determined monthly and growth was estimated weekly. Behavior was assessed with exploration and novel prey tests in solitary using video tracking. Results demonstrated that enriched condition resulted in bigger fish from the first month. Growth curve analysis revealed that enriched environment made both fish crossings grow in a similar manner. In contrast, crossings growth differed in traditional rearing which may reflect a genotype-environment interaction. Behavioral data highlighted that enriched-reared fish were slower to explore a new environment but more individuals engaged on doing so than traditional-reared fish. Results also showed that survival was high (>80 %) during all the trial. However, survival was lower during the second month in enriched environment. Our findings advocate for the integration of enriched rearing practices within the juvenile production for release in order to boost the performance linked to fitness. Stocking practices and life history research must work together to favor adaptive aquaculture approaches, which support species conservation.

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European sturgeon (Acipenser sturio L.) young of the year performance in different rearing environments –study within a stocking program

2016

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Tissue-specific daily variation in the oxidative status of sturgeon (Acipenser naccarii) and rainbow trout (Oncorhynchus mykiss): a comparative study

Hidalgo

Trenzado

Furné

et al. 2017

Fish Physiol Biochem

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The oxidative status is associated with animal lifespan, metabolism, activity and circadian rhythms. The objective of this work is to study the time course of the oxidative status over a daily cycle in the plasma, liver and brain, and the changes in the plasma cortisol levels of sturgeon and trout. The knowledge of daily oxidative status will provide a better understanding of the trout and sturgeon physiology and adequate maintenance and food supply of farmed fish in relation to photoperiod. Superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase, glutathione transferase, DT-diaphorase activities, lipid peroxidation and cortisol were measured. Our results showed that the antioxidative enzyme activities and lipid peroxidation in the liver of trout and sturgeon changed through the day, with increased levels in lipid peroxidation of liver in the dark period for sturgeon. This could be related to the different activity time in both species, an issue to be taken into account when designing the guidelines of the maintenance of these species in fish farms. On the contrary, there was not clear influence of the daily rhythms on brain oxidative status. The higher efficiency of the antioxidant defences in the brain of sturgeon, which displays less lipid peroxidation and higher antioxidative activity, could be related to its longer life expectancy. The absence of any apparent daily rhythm in the plasma cortisol levels in sturgeon could indicate a lower susceptibility to stress, and that mechanisms involved in cortisol secretion in chondrosteans could be different from that described for teleosteans.

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Effect of Photoperiod Manipulation on Growth Performance, Physiological and Hematological Indices in Juvenile Persian Sturgeon, Acipenser persicus

Falahatkar¹,

Poursaeid²,

Efatpanah³

et al. 2012

J World Aquaculture Soc

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The effect of five different light regimes on growth, stress and hematological indices was studied in Persian sturgeon, Acipenser persicus. Fish with average weight of 645.3 ± 11.2 g were subjected to different photoperiods (24 L, 12 L:12 D, 16 L:8 D, 8 L:16 D and 24 D) for 8 wk. Blood samples were collected at the end of the experiment for measuring cortisol, glucose and hematological features. The whole growth parameters showed no significant difference. Plasma cortisol concentration was significantly higher in 12 L:12 D, while the lowest level was observed in fish exposed to 24 D. No significant changes were observed among the treatments for glucose concentration. Lactate concentration varied significantly among the treatments. Some hematological indices including hematocrit and number of white blood cells were affected by different light regimes, but the others (hemoglobin and number of red blood cells) were not affected significantly. The results showed that photoperiod manipulation can alters some stress-related metabolites and may enhance growth rate in fish exposing to continuous darkness.

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Manipulation of photoperiod in growth factors of beluga sturgeon Huso huso

Abstract: The beluga sturgeon is considered as the most important species for caviar production. This study aimed to evaluate effects of photoperiod manipulation on growth factors of beluga sturgeon.

Cited by 6 publications

References 19 publications

European sturgeon (Acipenser sturio L.) young of the year performance in different rearing environments –study within a stocking program

European sturgeon (Acipenser sturio L.) young of the year performance in different rearing environments –study within a stocking program

Tissue-specific daily variation in the oxidative status of sturgeon (Acipenser naccarii) and rainbow trout (Oncorhynchus mykiss): a comparative study

Effect of Photoperiod Manipulation on Growth Performance, Physiological and Hematological Indices in Juvenile Persian Sturgeon, Acipenser persicus

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