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林浩然, 林鼎. 鳗鲡繁殖生物学研究 Ⅱ.下海雌鳗脑垂体超显微构造的研究[J]. 水生生物学报, 1983, 7(1): 33-44.
引用本文: 林浩然, 林鼎. 鳗鲡繁殖生物学研究 Ⅱ.下海雌鳗脑垂体超显微构造的研究[J]. 水生生物学报, 1983, 7(1): 33-44.
Lin Haoren, Lin Ding. STUDIES ON THE BREEDING BIOLOGY OF THE EEL (ANGUILLA JAPONICA TEMMINCK SCHLEGEL) 2. ULTRASTRUCTURAL STUDY OF PITUITARY OF FEMALE EELS AT SEAWARD MIGRATING PERIODS[J]. ACTA HYDROBIOLOGICA SINICA, 1983, 7(1): 33-44.
Citation: Lin Haoren, Lin Ding. STUDIES ON THE BREEDING BIOLOGY OF THE EEL (ANGUILLA JAPONICA TEMMINCK SCHLEGEL) 2. ULTRASTRUCTURAL STUDY OF PITUITARY OF FEMALE EELS AT SEAWARD MIGRATING PERIODS[J]. ACTA HYDROBIOLOGICA SINICA, 1983, 7(1): 33-44.

鳗鲡繁殖生物学研究 Ⅱ.下海雌鳗脑垂体超显微构造的研究

STUDIES ON THE BREEDING BIOLOGY OF THE EEL (ANGUILLA JAPONICA TEMMINCK SCHLEGEL) 2. ULTRASTRUCTURAL STUDY OF PITUITARY OF FEMALE EELS AT SEAWARD MIGRATING PERIODS

  • 摘要: 神经垂体主要由神经分泌纤维、脑垂体细胞和微血管组成。神经分泌纤维主要是无髓鞘神经纤维,也有一些是有髓鞘神经纤维。神经垂体中还有一些多层体构造。神经分泌纤维有两个基本类型:A型纤维含有直径为1250—1750Å的神经分泌颗粒;B型纤维含有直径为450—1000Å的颗粒状囊泡。腺垂体的分泌细胞按其超显微构造的特点和所含的分泌颗粒大小不同可以区分为六个类型:催乳激素分泌细胞、促甲状腺激素分泌细胞,促肾上腺皮质激素分泌细胞、促生长激素分泌细胞、促性腺激素分泌细胞和后腺垂体的分泌细胞。

     

    Abstract: The ultrastructure of pituitary of female eels at seaward migrating periods was investigated with the electron microscope. Neurohypophysis is mainly composed of neurosecretory fibres, pituicytes and capillaries. A few neurosecretory fibres were myelinated, but most were not. Some multilamellate bodies were present in neurohypophysis. Two types of neurosecretory axons are found in the neurohypophysis, type A fibres containing elementary neurosecretory granules with diameter of 1250—1750Å, type B fibres containing granulated vesicles with diameter of 450—1000Å. These fibres end on a basement membrane adjacent to the endocrine cell of adenohypophysis. So, the endocrine cells generally do not contact directly with the neurosecretory fibre. However, some of the neurosecretory fibres make direct synaptic contact with pituicytes. Six different types of endocrine cells were identified in the adenohypophysis by the ultrastructural characteristic and the size of the secretory vesicles they contain, i. e., prolactin cell, corticotroph, somatotroph, thyrotroph, gonadotropyh and the endocrine cell in meta-adenohypophysis. Prolactin cells, corticotrophs and thyrotrophs exhibited an active secretory function, whereas gonadotrophs did not show a functional activation.

     

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