Dynamics of indices of metabolism in muscle tissue, liver and gonads of Abramis brama in different periods of the annual cycle

Payuta, Aleksandra Aleksandrovna; Флерова, Е. А.

doi:10.15421/012020

Cited by 3 publications

(1 citation statement)

References 59 publications

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“…At the same time, it was shown that with an increase in the growing period, moisture in sturgeon muscles decreases and fat and protein increase (Poleksic et al, 2010;Memis et al, 2011;Kairullaev et al, 2017;Lee et al, 2017). Corresponding age-related changes have been studied in other fish species (Volichenko et al, 2017;Payuta & Flerova, 2020). Timely completion of the process of rearing juveniles in pools will reduce the death of larvae of Russian sturgeon (Sherman et al, 2009;Chebanov et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Dynamics of growing of Russian sturgeon (Acipenser gueldenstaedtii) larvae for different durations of cultivation

Olifirenko

2020

Regul. Mech. Biosyst.

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In the context of the need to preserve the biodiversity of natural waters, the cultivation of valuable fish species for stocking natural reservoirs takes on exceptional importance. Optimization of the technology for growing sturgeon in artificial conditions has become the main goal of our research. The population used for the present study is from a fish farm, Dneprovskiy Sturgeon Fish Breeding Factory located in Belozersky district (Kherson region, Ukraine). Studies were conducted for ten years (2007–2017). The objective of our study is to assess the quality of juvenile sturgeon when grown with different durations. The research material was provided by the free embryos and larvae of Russian sturgeon (Acipenser gueldenstaedtii von Brandt & Ratzeburg, 1833). Formation of experimental groups and calculation was performed on the principle of groups-analogues by standard methods. The main resultant criteria were larval survival, optimal extrinsic performance, and fish productivity. As a result of the conducted research it was determined that the optimal term of growing the larvae of A. gueldenstaedtii in the pools was 20 days. During this period, young sturgeon had high rates of average body weight with a survival rate of at least 53.4–60.2% and optimal physiological state. In variants with a maximum growth period of 24 days, the difference in the individual masses of the test material was significantly increased on the background of rather high mass indices of the larvae (1.2–1.4 and 1.9–2.1 times, respectively for II–III variant). This led to an increase in the pressure of food competition and, as a result, to a decrease in the output of young sturgeon growth of up to 46.5–61.9%. Survival of the larvae was by far the highest in the experimental groups with a minimum period of cultivation and ranged within 75.1–80.7%. The maximum level of fish productivity was observed in the third variant of the experiment with the longest period of cultivation. An analysis of the relative indicators of body weight gain revealed that with the extension of the growing period in experimental variants the percentage of realization of growth of larvae during the period of exogenous feeding was proportionally reduced. The most effective use of feed for the growth of body weight of the larva was in the variant with a growing period of 20 days. Feed costs in these groups ranged within 2.80–3.24, which averaged 2.83–3.02. Analysis of the dynamics of oscillations of the main biochemical indicators showed that the accumulation of consumables in the body of the experimental larvae increased with the growing period of cultivation in the pools. The amount of moisture was adequately reduced. The greatest influence on the results of the growth of sturgeon larvae in the pools among all the considered factors belonged to the period of cultivation, the magnitude of significance of which was 61.2%. The research results should significantly improve the technology of growing the Dnieper population of A. gueldenstaedtii on fish farms.

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Section: Discussionmentioning

confidence: 99%

Dynamics of growing of Russian sturgeon (Acipenser gueldenstaedtii) larvae for different durations of cultivation

Olifirenko

2020

Regul. Mech. Biosyst.

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The timing of spring warming shapes reproductive effort in a warm-water fish: the role of mismatches between hepatic and gonadal processes

Fernandes

Shuter

Ihssen

et al. 2022

Can. J. Fish. Aquat. Sci.

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Spring-spawning fishes native to northern environments rely on both increasing temperature and lengthening photoperiod to cue reproduction and may thus be particularly sensitive to rapid warming earlier in the year while day lengths remain short. We investigated the reproductive response of pumpkinseed sunfish Lepomis gibbosus to spring warming commencing at a range of day lengths (9 – 15 hours), corresponding to various calendar days (January 10 – May 22). In both the laboratory and field, both male and female fish that experienced early warming while day lengths were <11 hours: 1) failed to initiate reproductive preparation in the liver before gonad development began, and 2) had reduced reproductive allocation. Analysis of published data on temperate fishes suggested that liver development prior to gonad development is widespread across warm-, cool-, and cold-water thermal guilds, though the precise phenology of liver relative to gonad development appears to vary widely among species. Together, our results point toward dampened reproductive preparation as a novel mechanism mediating reduced reproductive output in both warm- and cool-water fish following earlier spring warming.

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Chemical composition of muscle tissue of fish reared in the aquaculture of South Vietnam

Payuta,

Guldina,

Flerova

et al. 2024

Ûg Ross.: èkol. razvit.

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To study the chemical composition of four species of valuable fish reared in aquaculture conditions in South Vietnam.Individuals of Channa striata, Channa gachua, Oreochromis niloticus, a hybrid of Clarias gariepinus and Clarias macrocephalus were purchased in markets from farmers of cage farms and directly in the farms of Khanh Hoa province. The fish were measured, weighed, and then muscle tissue was dissected for chemical analysis. The water content in the tissue was determined by a two‐stage method for determining moisture, while lipids were determined by the fat‐free residue method in a Soxhlet apparatus. The amount of protein was obtained according to the principle of the Kjeldahl method, using a semi‐automatic distillation unit UDK 139 (Velp Scientifica, Italy, 2011); minerals were determined by the gravimetric method, and carbohydrates – by calculation. The index of physiological state was calculated according to the standard method.Hybrid catfish muscles are characterised as having the greatest nutritional value. In terms of lipid content, the individuals studied belonged to fish with a low fat content, Channa striata, which belongs to the category of lean fish. A high index of physiological state in Oreochromis niloticus was found to be associated with increased water content in muscle tissue. No significant differences were found between the biochemical parameters in the muscles of fish with an increase in body size, and only in Channa striata did the proportion of minerals increase. The data obtained can be used in the organisation of rational feeding and maintenance of aquacultural species.

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Dynamics of indices of metabolism in muscle tissue, liver and gonads of Abramis brama in different periods of the annual cycle

Cited by 3 publications

References 59 publications

Dynamics of growing of Russian sturgeon (Acipenser gueldenstaedtii) larvae for different durations of cultivation

Dynamics of growing of Russian sturgeon (Acipenser gueldenstaedtii) larvae for different durations of cultivation

The timing of spring warming shapes reproductive effort in a warm-water fish: the role of mismatches between hepatic and gonadal processes

Chemical composition of muscle tissue of fish reared in the aquaculture of South Vietnam

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