Abstract: To probe into the differences in morphology and structure of blood cells in salmonids, microstructure and ultrastructure of peripheral blood cells were observed in four species of juvenile salmonids including Dolly varden Salvelinusmalma with body mass of (49.07±12.05)g, Alpine charr Salvelinusleucomaenis with body mass of (83.23±15.07)g, rainbow trout Oncorhynchusmykiss with body mass of (60.12±11.86)g and golden trout Oncorhynchusmykiss with body mass of (42.04±12.26)g by light and electron microscopy. The results showed that there were 5 cell types in the peripheral blood of four species of salmonids: erythrocytes, monocytes, lymphocyte, neutrophils and thrombocytes, with most abundant erythrocytes, and followed by lymphocytes, without significant difference in densities of macro-lymphocyte and neutrophils (P>0.05). The four salmonid species had similar morphological structure in mature erythrocytes and diverse thrombus cells and other white blood cells were similar in morphological structure. The white blood cells were mainly composed of thrombus cells and lymphocytes, with the maximal thrombocytes arranged in groups in Dolly varden. There were a large number of erythrocytes, with the maximal long and short diameters in Dolly vardenis. Dolly varden had the monocytes, which were rich in organelles, and neutrophils with many segmented nuclei. Alpine charr also had more abundant erythrocytes and red lymphocytes. Rainbow trout had the minimal erythrocytes and the maximal lymphocytes, with the longest short diameter and long diameter in neutrophils. The maximal erythrocytes and white blood cells count, and the largest long and short diameters were observed in lymphocytes and thrombus cells of golden trout. The findings indicated that four salmonid species had similar microstructure and ultrastructure of the peripheral blood cells to other fish, with some differences in the number and size of blood cells between species.
陆绍霞, 张春雷, 王常安, 刘洋, 韩世成, 刘红柏. 4种鲑鳟鱼外周血细胞显微及超微结构比较[J]. 大连海洋大学学报, 2021, 36(2): 280-288.
LU Shaoxia, ZHANG Chunlei, WANG Changan, LIU Yang, HAN Shicheng, LIU Hongbai. Comparison of microstructure and ultrastructure of peripheral hematocytes in four species of salmonids. Journal of Dalian Ocean University, 2021, 36(2): 280-288.
2021, Vol. 36 
