Examination of liver and muscle glycogen and blood glucose levels of Capoeta umbla (Heckel, 1843) living in Hazar Lake and Keban Dam Lake (Elazig, Turkey)

Çoban, Mehmet Zülfü; Şen, Dursun

doi:10.5897/ajb11.807

Cited by 12 publications

(1 citation statement)

References 12 publications

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“…The literature does not report similar dynamics in the accumulation of metabolic products in the liver of individuals of a species which live in different conditions. In the liver of Atlantic cod of the Baltic Sea, the amount of fat changed equally with age, having a the tendency towards decrease, whereas in the Bering Sea it increased; a similar tendency to agerelated changes in glycogen was found in the liver of Capoeta umbla from the lakes of Turkey with different living conditions (Krivobok & Tarkovskaya, 1964;Bogoyavlenskaya & Veltishcheva, 1972;Coban & Sen, 2011). Perhaps, similar changes occurring in the liver of bream of the Upper Volga Reservoirs, specifically the accumulation of metabolic products in middleaged individuals is a peculiarity of the ecology of this species.…”

Section: Discussionmentioning

confidence: 71%

Impact of habitation conditions on metabolism in the muscles, liver, and gonads of different sex and age groups of bream

Payuta

Флерова

2021

Regul. Mech. Biosyst.

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Impact of the factors of the aquatic environment is an inevitable aspect of the life of fish as poikilothermic animals and provokes responses in their organisms. The study focused on determining peculiarities in the composition of the metabolic products in the tissues of different age and sex groups of common bream Abramis brama (L.) depending on the living conditions in the water reservoirs of the Upper Volga. The fish were captured in the fattening period in summer and autumn, measured, weighed, identifying sex, maturity stage of the gonads and age. In the muscles, liver and gonads of bream, we analyzed the contents of water, dry matter, lipids, protein, ash and carbohydrates using the standard techniques. The contents of biochemical components in the organism of bream were to a higher degree determined by the peculiarities of the living conditions rather than sex and age of the individuals. In the muscles and liver of bream living in the conditions of increased water temperature and low concentration of oxygen, the concentrations of protein and ash were lower. In the same tissues of bream from the water bodies with high concentrations of pollutants in the water and benthic deposits, we found increased fat content. The muscles of male bream contained less protein and more carbohydrates than females and juvenile individuals, and the muscles of juveniles had less fat. The environmental factors had greater influence on the content of the metabolic products in the liver of bream than sex, and only females had higher ash content than males. The testes had more fat and less protein than the ovaries. During the transition of the gonads from maturity stage II to III, the contents of dry matter and lipids in them decreased. We determined that the environmental factors have stronger impact on biochemical parameters in the tissues of bream than age, because we found no general age patterns in the dynamics of biochemical components, except the liver, in which the highest content of organic compounds was found in individuals aged 6 to 10 years. Water heated by the Hydro Power Plant positively influenced the young bream, as indicated by higher content of metabolic products in individuals aged 5+ than older groups and bream from the surveyed water bodies. Monitoring of the physiological condition of bream focusing on the contents of metabolic products in the tissues may provide necessary data for successful regulation of bream populations in the water reservoirs of the Upper Volga.

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Section: Discussionmentioning

confidence: 71%

Impact of habitation conditions on metabolism in the muscles, liver, and gonads of different sex and age groups of bream

Payuta

Флерова

2021

Regul. Mech. Biosyst.

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Effect of water temperature on growth, blood biochemistry, digestive, metabolic enzymology, and antioxidant defences of Trachinotus blochii juveniles

et al. 2022

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Liver Glycogen as a Sensitive Indicator of Food Limitation in Delta Smelt

Dhayalan,

Tran,

Hung

et al. 2023

Estuaries and Coasts

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Assessing habitat quality is a major goal of conservationists and restoration practitioners, but to associate habitat quality with biomarkers of vagile animals, the biomarkers must respond rapidly. Here, we identified a biomarker capable of rapidly detecting food limitation in the imperiled Delta Smelt (Hypomesus transpacificus), a pelagic fish endemic to the San Francisco Estuary (SFE). We conducted an experiment with fed and unfed treatments of hatchery-raised, sub-adult Delta Smelt that were sampled at 12 time points: 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 14, and 21 days. We then compared four biomarkers using Day 21 fish: RNA/DNA in liver, triglycerides in liver, glycogen in liver, and glycogen in muscle. Of the liver endpoints, glycogen had the largest difference between treatments at Day 21, so we compared it to muscle glycogen across all time points. Liver glycogen declined by 60% after 1 day of fasting and remained depressed in the fasting treatment across all subsequent time points. Muscle glycogen also responded rapidly, taking only 2 days to decline by 39% in the fasting treatment, but the difference was inconsistent across subsequent time points. When applied to hatchery-released Delta Smelt collected from the SFE, liver glycogen concentrations were less than half that of the fed hatchery fish, consistent with the hypothesis of food limitation in the wild, but also several other potential causes. This study highlights the utility of liver glycogen as an indicator of recent foraging success in Delta Smelt.

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Examination of liver and muscle glycogen and blood glucose levels of Capoeta umbla (Heckel, 1843) living in Hazar Lake and Keban Dam Lake (Elazig, Turkey)

Cited by 12 publications

References 12 publications

Impact of habitation conditions on metabolism in the muscles, liver, and gonads of different sex and age groups of bream

Impact of habitation conditions on metabolism in the muscles, liver, and gonads of different sex and age groups of bream

Effect of water temperature on growth, blood biochemistry, digestive, metabolic enzymology, and antioxidant defences of Trachinotus blochii juveniles

Liver Glycogen as a Sensitive Indicator of Food Limitation in Delta Smelt

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