Abstract
Using scanning electron microscopy, the structure of the apical surface of epidermal cells in the head skin and epithelium in the oral cavity of the carp Cyprinus carpio specimens, intact and with chronic olfactory and visual deafferentiation, has been studied. It is shown that sensory-deprived fish differ from intact fish by significant changes in the morphology of the apical surface of epidermal cells. The regular ring-shaped pattern on the apical surface of cells is disturbed but complex patterns or lamellar protrusions of ring-shaped ridges appear. The location and orientation character, as well as the density of distribution and the pattern on the apical surface of even neighboring cells can be completely different. A high concentration of cells with the modified apical surface was found in sensory zones of taste and tactile reception. The changes are similar in epidermal cells of the head skin and epithelial cells of the oral cavity. The individual specificity of structural changes in epidermal cells was not found. The possible relationship between the changes in the apical surface of epidermal cells and activation of the skin reception system and other sensory systems is discussed.
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ACKNOWLEDGMENTS
I am grateful to E.A. Marusov (Moscow State University) for providing fish specimens and conducting anosmia and enucleation surgeries, A.O. Kasumyan for valuable remarks and active participation in discussing the results of the study. I would like to thank the staff of the Laboratory of Electron Microscopy, Biological Department, Moscow State University for the technical support and assistance in the study.
Funding
This work was supported by the program “Leading Scientific Schools” (project NSh-2666.2014.4) and the program “ISTINA” of the Moscow State University, project no. 0708.
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Translated by N. Ruban
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Devitsina, G.V. Morphological Changes in Epidermal Cells of Fish with Chronic Anosmia and Enucleation. J. Ichthyol. 61, 764–770 (2021). https://doi.org/10.1134/S0032945221050027
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DOI: https://doi.org/10.1134/S0032945221050027