ULTRASTRUCTURE OF THE BYSSUS AND THE BYSSUS GLANDS IN CHLAMYS-VARIA L (LAMELLIBRANCHIA)
ULTRASTRUCTURE OF THE BYSSUS AND THE BYSSUS GLANDS IN CHLAMYS-VARIA L (LAMELLIBRANCHIA)
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DOI：
10.1017/s0025315400045616
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发表时间：
1979-01-01
影响因子：
1.2
通讯作者：
NOTT, JA
中科院分区：
文献类型：
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作者：
GRUFFYDD, LD;BUDIMAN, A;NOTT, JA
在近端，华南星的侧索带由电子致密的纤维状髓质组成，两侧由随机排列的纤维组成的密度较低的基质所包围。在横断面上，延髓纤维呈波浪状分布。更远端，基质丢失，髓质纤维堆积在一起，形成非常致密的均匀结构。在底物附近，丝带的中心逐渐断裂成松散的纤维排列，但保留了密集的边缘。在更远端的区域，髓纤维沿纤维带的纵轴比近端更一致。将丝带捆绑在一起的鞘也是纤维状的，纤维倾向于以环形方式绕过筋骨。分泌鞘的次级骨节腺很容易与产生带状结构的初级骨节腺区别开来，因为它的分泌物颗粒更大、更椭圆形。
Proximally, the byssus ribbons in C. varia are composed of an electron-dense, fibrous medulla bounded on both sides by a less dense matrix consisting of randomly arranged fibers. In TS transverse section, the fibers of the medulla display a sinuous pattern. More distally, the matrix is lost and the fibers of the medulla pack together to form a very dense homogeneous structure. Near the substratum, the center of the ribbon progressively breaks up into a loose arrangement of fibers again but a dense margin is retained. In the more distal regions the medullary fibers are more consistently aligned along the longitudinal axis of the ribbon than proximally. The sheath binding the ribbons together is also fibrous, the fibers tending to run around the byssus in a circular manner. The secondary byssus gland, which secretes the sheath, is easily distinguished from the primary byssus gland, which produces the ribbons, by its larger and more ellipsoid granules of secretion.