Cell composition of the head kidney of European chub (Squalius cephalus L. )

Abstract

Abstract. The aim of the present study was to perform quantitative and qualitative evaluations of developing blood cells in the head kidney of European chub, Squalius cephalus (L.). Twenty-one types of hematopoietic precursors and mature cells were identified in head kidneys isolated from ten juvenile fish. The lymphoid lineage was the most abundant, followed by granuloid, erythroid, thrombocytoid, blast, and monocytoid cells. The lymphocyte was the most frequently occurring cell in the kidney and the most numerous of the lymphoid cells. The neutrophilic lineage was the most numerous among the granuloid cells. The erythropoietic series comprised five stages (erythroblasts: basophilic, polychromatic, orthochromatic; young and mature erythrocytes), more than the numbers of developmental stages of any other lineages. Juvenile cells were more abundant than mature stages in the head kidney. Only mature eosinophils and thrombocytes were found in chub hematopoietic tissue. The cellular composition in chub hematopoietic tissue was similar to that in other fish species.

Hematological and Hematopoietic Effects of Bactericidal Doses of Trans-Cinnamaldehyde and Thyme Oil on Cyprinus carpio Juveniles

“…In this study, no significant effects of TC or TO on cellular composition of hematopoietic tissue of Cyprinus carpio juveniles were observed and in all the groups, hematopoietic tissue cellular structure was typical for healthy common carp (Kondera, 2014). No literature data concerning the hematopoietic effects of herbal feed supplements were found.…”

Cellular Composition and Proliferation Levels in the Hematopoietic Tissue of Black Scorpionfish (Scorpaena porcus L.) Head Kidney and Spleen During the Spawning and Wintering Periods

“…Thus the head kidney of black scorpionfish appears to be a place of blood cell production, not reservation; possessing a qualitative cell composition analogous to that of mammalian bone marrow. Similar features have been suggested for various fish species (Catton, ; Claver and Quaglia, ; Kondera, , ). The presence of maturing macrophages, plasma cells and monocytes in the head kidney cell smears indicates a significant role of the head kidney in immunity.…”

“…However, hematopoietic activity in the organs varies from one species to another. In most teleostean fish the spleen's function is in the storage of blood cells and in destruction of aged RBCs (Abdel‐Aziz et al, ; Witeska, ) and head kidney is considered to be the major lympho‐hematopoietic site (Kondera, , ). At the same time, spleen and head kidney have been considered an exclusively erythropoietic or lymphopoietic organ in some species (Fänge and Nilsson, ).…”

Comparative Characterization of the Cellular Composition of the Black Scorpionfish (Scorpaena porcus L.) Hematopoietic Organs during the Spawning Season and the Period of Reproductive Inactivity

“…При этом в специализации этих органов обнаруживается видовая специфичность. У большинства видов костистых рыб селезенка осуществляет функцию депонирования и утилизации старых эритроцитов (Abdel-Aziz et al, 2010;Witeska, 2013), а основную гемопоэтическую функцию берет на себя пронефрос (Kondera, 2011;Kondera, 2014). Вместе с тем, известны виды, у которых в селезенке происходит образование эритроцитов и лимфоцитов, а пронефрос специализируется только на формировании клеток белой крови, не осуществляя эритропоэз (Fänge, Nilsson, 1985).…”

“…Осадок клеток использовали для изготовления мазков. (Catton, 1951;Claver, Quaglia, 2009;Kondera, 2011;Kondera, 2014;Gordeev et al, 2019). (Soldatov, 2005a;Witezka, 2013…”