Histological analysis of state of tissues in internal organs of black-backed shad &lt;i&gt;Alosa kessleri kessleri&lt;/i&gt;

Grushko, Maria Pavlovna; Федорова, Н. Н.; Aitimova, Alina A.

doi:10.26428/1606-9919-2017-188-155-161

Izv. Tihookean. naučno-issled. rybohoz. centra

2017

DOI: 10.26428/1606-9919-2017-188-155-161

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Histological analysis of state of tissues in internal organs of black-backed shad <i>Alosa kessleri kessleri</i>

Maria Pavlovna Grushko¹,

Н. Н. Федорова²,

Alina A. Aitimova³

Abstract: Internal organs of black-backed shad are examined by histological analysis. Wide range of pathologies is found, which are supposedly caused by chronic environmental pollution. The pathologies of tissue and cellular levels have common features but various symptoms, as edema, hemorrhage, necrosis, inflammation, connective tissue proliferation, proliferative changes in the epithelium. The gills, liver; kidney, and intestines are the most sensitive to negative impacts of environments.

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Comparative characteristics of morphofunctional state of organs in black-back herring (Alosa kessleri kessleri) caught in different years

Grushko

Федорова

2022

Vestnik of Astrakhan State Technical University. Series: Fishing Industry

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The purpose of the research was to consider pathological characteristics of tissues and organs of black-back herring (Alosa kessleri kessleri) in different years. Results of the comparative analysis of pathohistological changes in the organs were taken into account, since this method allows revealing pathological changes in herring organs and tissues, and comparative analysis of histomorphological parameters of black back herring in different years allowed determining changes in the degree and level of a pathological process in the course of time. There were studied the matured species of black back herring Alosa kessleri kessleri (Grimm) caught for analysis during the spawning run in the Volga River in 2014 and 2021. Six hundred of histological sections of organs (liver, kidneys, spleen, intestines, and gills) in 37 species were prepared and analyzed. The species selected for the study were 2 and 3 years old. The material was processed by the classical histological methods. Pathomorphological study of black back herring’s organs in different years showed that the studied fish species experienced high stress. There has been found a wide range of pathologies which could be caused by a chronic ingestion of pollutants from the environment. It has been stated that the organs through which pollutants enter were most affected (gills, liver, kidneys). The main manifestations of a pathological process were microcirculatory disorders, edema, necrosis, inflammation, connective tissue over-growth, epithelial hyperplasia. All the detected pathological changes in fish organs arose due to the modern environment, which is explained by the disturbances resulting from significant changes in aquatic and terrestrial ecosystems

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Comparative characteristics of morphofunctional state of organs in black-back herring (Alosa kessleri kessleri) caught in different years

Grushko

Федорова

2022

Vestnik of Astrakhan State Technical University. Series: Fishing Industry

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The risk-based control of the safety and quality of freshwater fish for sale in the agri-food market

Liasota

Bukalova

Богатко

et al. 2023

Potr. S. J. F. Sci.

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Scientifically substantiated and experimentally proven the feasibility of conducting proper risk-based control of the safety and quality of freshwater fish in the Kyiv region's agro-food markets following the regulatory document's requirements, developed by express, improved methods for determining freshness and microstructural examination of muscle tissue. At organoleptic assessmentUkrainian scaly carp, crucian carp, and pike perch were fresh, and rotan was of dubious freshness. Regarding pH value, Nesler number, and qualitative reaction to the content of ammonia and ammonia salts with ’Nesler’s reagent, the meat of Ukrainian scaly carp, crucian carp, and pike perch corresponded to fish of a fresh degree. For rotan meat, its dubious freshness was established. In the photometric determination of the studied fish's freshness, the optical density of the supernatant correlated with the quality indicators for the content of ammonia and ammonia salts. An improved benzidine test with a filtrate from the gills of the mouth confirms the doubtfulness of the freshness of the fish. The studied fish samples corresponded to the standard indicators according to microscopic indicators and the number of mesophilic aerobic and facultative anaerobic microorganisms. By determining the chemical parameters of the studied fish, it was found that the mass fraction of water in meat was the highest in rotan (78.30 ±0.13%) and was accompanied by the smallest mass fraction of dry matter (21.70 ±0.09), the proportion of proteins (16.96 ±0.06), indicators of fat in meat (3.01 ±0.06%) and formed the lowest indicator of its relative biological value – 92.5%. In benign fish with organoleptic indicators, a microstructural study of muscle tissue revealed significant changes in its structure with atrophy of individual muscle fibers and growth in these areas of connective, mainly fatty tissue.

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Histological analysis of state of tissues in internal organs of black-backed shad <i>Alosa kessleri kessleri</i>

Cited by 2 publications

References 2 publications

Comparative characteristics of morphofunctional state of organs in black-back herring (Alosa kessleri kessleri) caught in different years

Comparative characteristics of morphofunctional state of organs in black-back herring (Alosa kessleri kessleri) caught in different years

The risk-based control of the safety and quality of freshwater fish for sale in the agri-food market

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