Rouse G W, Pickles J O
Vision, Touch, and Hearing Research Centre, Department of Physiology and Pharmacology, University of Queensland, Queensland 4072, Australia.
J Morphol. 1991 Jul;209(1):111-120. doi: 10.1002/jmor.1052090109.
Light and electron microscopic observations were made on the lateral line organs of the free neuromasts of the goby Bathygobius fuscus and the canal neuromasts of the cardinal fish Apogon cyanosoma. As in other lateral line systems, each neuromast consists of hair cells, supporting cells and mantle supporting cells, the whole being covered by a cupula. In B. fuscus the free neuromasts are mounted on papillae and have hair cells with stereocilia up to 2.5 μm long and a single kinocilium at least 25 μm long. Each neuromast is covered by a vane-like cupula that can be divided into two regions. The central region over the sensory area contains columns of myelin-like figures. These figures are absent from the outer region covering the mantle. The canal neuromasts of A. cyanosoma are diamond-shaped with up to 1,500 hair cells. The cupula is unusual in having a channel that lies over the sensory region. The hair cells have up to 45 stereocilia, the tallest reaching 2.5 μm, and a kinocilium at least 5 μm long. Tip links are shown for the first time between rows of stereocilia of the hair cells of lateral line neuromasts. The presence of tip links has now been demonstrated for all acousticolateral hair cell systems.
对褐塘鳢游离神经丘的侧线器官和蓝点天竺鲷管神经丘进行了光镜和电镜观察。与其他侧线系统一样，每个神经丘由毛细胞、支持细胞和套膜支持细胞组成，整体被一个杯状帽覆盖。在褐塘鳢中，游离神经丘位于乳突上，其毛细胞的静纤毛长达2.5μm，单个动纤毛至少25μm长。每个神经丘被一个叶片状的杯状帽覆盖，该杯状帽可分为两个区域。感觉区域上方的中央区域含有髓磷脂样结构柱。覆盖套膜的外部区域没有这些结构。蓝点天竺鲷的管神经丘呈菱形，有多达1500个毛细胞。杯状帽的不同寻常之处在于，在感觉区域上方有一个通道。毛细胞有多达45根静纤毛，最长的达到2.5μm，还有一根至少5μm长的动纤毛。首次在侧线神经丘毛细胞的静纤毛排之间显示了纤毛顶端连接。现在已经在所有听侧毛细胞系统中证实了纤毛顶端连接的存在。
