| Ontogeny of the Lymphoid Organs of Japanese Flounder, Paralichthys olivaceus |
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| 作者姓名： | LIUYun JIANGGuoliang ZHANGShicui |
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| 作者单位： | CollegeofMarineLifeSciences,OceanUniversityofChina,Qingdao266003,P.R.China |
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| 基金项目： | The authors want to thank Mr.Jiang Ming and Miss Yang Dong for their technical assistance，国家自然科学基金，科技部资助项目 |
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| 摘 要： | Histological study on the ontogeny of the lymphoid organs, kidney, thymus and spleen of Japanese flounder, Paralichthys olivaceus, from hatching to 40d was carried out. The pronephric kidney duct appeared early in hatching although the primordial haemopoietic stem cells wereobserved within a week after hatching. The spleen was first seen after 8d of hatching. The thymus appeared after 15d, situated near the pronephric kidney. Small lymphoid cells appeared during the later phase of the post-larval stage in the sequence of thymus, kidney and spleen. During the 40d of observations, there were no distinct inner or outer zones in thymus and no red or white pulp in spleen. These results suggest that the nonspecific defense immune system plays a very important role in the early larval stage of Japanese flounder.
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| 关 键 词： | 个体发生学 淋巴器官 日本比目鱼 人工饲养 |
Ontogeny of the Lymphoid Organs of Japanese Flounder, Paralichthys olivaceus |
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| LIUYun JIANGGuoliang ZHANGShicui.Ontogeny of the Lymphoid Organs of Japanese Flounder, Paralichthys olivaceus[J].Journal of Ocean University of China,2004,3(2):161-165. |
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| Authors: | LIU Yun JIANG Guoliang Zhang Shicui |
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| Institution: | College of Marine Life Sciences, Ocean University of China, Qingdao 266003, P.R.China |
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| Abstract: | Histological study on the ontogeny of the lymphoid organs, kidney, thymus and spleen of Japanese flounder, Paralichthys olivaceus, from hatching to 40 d was carried out. The pronephric kidney duct appeared early in hatching although the primordial haemopoietic stem cells were observed within a week after hatching. The spleen was first seen after 8 d of hatching. The thymus appeared after 15 d, situated near the pronephric kidney. Small lymphoid cells appeared during the later phase of the post-larval stage in the sequence of thymus, kidney and spleen. During the 40 d of observations, there were no distinct inner or outer zones in thymus and no red or white pulp in spleen. These results suggest that the nonspecific defense immune system plays a very important role in the early larval stage of Japanese flounder. |
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| Keywords: | ontogeny lymphoid organs Japanese flounder |
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