Abstract
The erythroid lineage was studied in the flounder-gloss (Platichthys flesus Linnaeus, 1758) during the annual cycle. The erythrocyte count in the blood was determined along with the contents of immature erythroid forms (basophilic and polychromatophilic normoblasts) in the head kidney (pronephros) and the blood. Cell proliferative activity was inferred from the [3H]thymidine inclusion in circulating immature erythrocytes. Irregularity was observed in erythropoiesis occurring in flounder-gloss hematopoietic tissue. Intense production of erythroid mass was mainly associated with a post-spawning period. This was evident from an increase in the contents of immature erythroid forms in the pronephros and circulating blood and an increase in their proliferative activity. The changes were associated with peculiarities of the erythroid system organization, which precludes regular production of erythropoietin in the kidney in teleost fish.
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This work was supported by the Russian Science Foundation (project no. 23-24-00061).
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Statement on the welfare of animals. All manipulations with fish were performed in compliance with Directive 2010/63/EU of the European Parliament and of the Council and were approved by the local committee for the care and use of animals (Protocol no. 28 dated February 15, 2018).
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Translated by T. Tkacheva
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Soldatov, A.A. Monocyclicity in the Function of the Erythroid Hematopoietic Lineage in Teleost Fish Exemplified by Platichthys Flesus (Linnaeus, 1758). Dokl Biol Sci 512, 307–310 (2023). https://doi.org/10.1134/S0012496623700564
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DOI: https://doi.org/10.1134/S0012496623700564