vestibИзвестия Национальной академии наук Беларуси. Серия биологических наукProceedings of the National Academy of Sciences of Belarus, Biological Series1029-89402524-230XThe Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1029-8940-2026-71-3-250-264vestib-1022Research ArticleСтатьиУльтраструктурная арганізацыя хваставога плаўніка блакітнага гурамі (Trichogaster trichopterus Pallas)Ultrastructural organization of the caudal fin of the blue gourami (Trichogaster trichopterus Pallas)https://orcid.org/0000-0001-8647-3922АстроўскіА. А.AstrowskiA. A.

Островский Александр Александрович – д-р мед. наук, профессор, вед. науч. сотрудник

пл. Антония Тызенгауза, 7, 230023, г. Гродно

Aliaksandr A. Astrowski – D. Sc. (Med.), Professor, Leading Researcher

7, Antoni Tyzenhauz Sq., 230023, Grodno

astrowski@gmail.comhttps://orcid.org/0009-0004-9607-7471БарадзінаТ. А.BaradzinaT. A.

Бородина Татьяна Александровна – науч. сотрудник

пл. Антония Тызенгауза, 7, 230023, г. Гродно

Tatsiana A. Baradzina – Researcher

7, Antoni Tyzenhauz Sq., 230023, Grodno

tatsyana.baradzina@mail.ruhttps://orcid.org/0000-0003-3513-2014АстроўскаяА. Б.AstrowskajaA. B.

Островская Оксана Борисовна – канд. мед. наук, доцент, ст. науч. сотрудник

ул. Горького, 80, 230009, г. Гродно

Aksana B. Astrowskaja – Ph. D. (Med.), Associate Professor, Senior Researcher

80, Gorkogo Str., 230009, Grodno

astrowskaja@gmail.comІнстытут біяхіміі біялагічна актыўных злучэнняў Нацыянальнай акадэміі навук БеларусіБеларусьInstitute of Biochemistry of Biologically Active Compounds of the National Academy of Sciences of BelarusBelarusГродзенскі дзяржаўны медыцынскі ўніверсітэтБеларусьGrodno State Medical UniversityBelarus202604082026713250264Copyright © Астроўскі А.А., Барадзіна Т.А., Астроўская А.Б., 20262026Астроўскі А.А., Барадзіна Т.А., Астроўская А.Б.Astrowski A.A., Baradzina T.A., Astrowskaja A.B.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestibio.belnauka.by/jour/article/view/1022

Было проведено гистологическое и электронно-микроскопическое исследование структуры хвостовых плавников половозрелых особей голубых гурами (Trichogaster trichopterus Pallas). Установлено, что на фронтальных срезах органа внешний вид как лепидотрихий, так и других структур значительно различается в его проксимальной, центральной и дистальной частях. Проксимальная часть плавника содержит чешую и межлучевые мышцы, центральная часть – только чешую, а дистальней отмеченные структуры отсутствуют. Подтверждено, что механической опорой хвостового плавника гурами является не только совокупность лепидотрихий, но и связанная с ними система прослоек коллагеновых волокон, которые расположены в рыхлой соединительной ткани, вплетаясь в дерму и гемитрихии. В межгемитрихиальном пространстве центральных и дистальных отделов плавника обнаруживаются плотные скопления специфических фибробластов, большинство из которых крупные, многоугольной формы, с большими ядрами и светлой цитоплазмой. В хвостовых плавниках гурами идентифицированы следующие клетки с центриолями: эпидермоциты базального и супрабазального слоев эпидермиса, фибробласты соединительной ткани, клетки Шванна, эндотелиальные клетки, миосателлитные клетки и крупные фибробласты межгемитрихиального пространства.

A histological and electron microscopic study of the caudal fin structure of sub-adult blue gourami (Trichogaster trichopterus Pallas) was conducted. It was found that on frontal sections of the organ, the appearance of both lepidotrichia and other structures differs significantly in its proximal, central and distal parts. The proximal part of the fin contains scales and interradial muscles, the central part contains only scales, and the aforementioned structures are absent distally. It was confirmed that the mechanical support of the caudal fin of gourami is provided not only by the set of lepidotrichia, but also by the associated interlayer system of collagen fiber, which are located in the space of loose connective tissue, connecting with the dermis and hemitrichia. In the interhemitrichial space, in the areas of the organ located both in its middle and at the distal edge, there are dense groups of specific fibroblasts, most of which are large in size, polygonal in shape, with large nuclei and clear cytoplasm. The following cells with centrioles have been identified in the caudal fin of gourami: epidermocytes of the basal and suprabasal layers of the epidermis, fibroblasts of connective tissue, Schwann cells, endothelial cells, myo- satellite cells, and large fibroblasts of the interhemitrichial space.

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The authors declare that there are no conflicts of interest present.