Light, scanning and transmission electron microscopical observation of gill filaments of cromileptes altivelis | 驼背鲈鳃丝的光镜、扫描和透射电镜观察

Chino. 应用光学显微镜、扫描电镜和透射电镜对驼背鲈Cromileptes altivelis鳃丝的组织结构、表面形态特征及鳃小片超微结构进行了观察．结果表明驼背鲈鳃丝和鳃小片的表面结构和超微结构与其他硬骨鱼类的基本相似，鳃丝表面分布有众多规则或不规则的环形微嵴、沟、坑、孔等结构．鳃丝排列紧密，末端膨大；鳃丝呼吸上皮细胞薄，其下具有丰富的毛细血管，胞间具分泌细胞开口．鳃小片表面呈褶皱状、凹凸不平，排列在鳃丝两侧．鳃小片是由上下2层单层呼吸上皮细胞以及把它们撑开的支持细胞所构成，泌氯细胞大量分布在鳃丝、鳃小片上，并有开口通往外界．讨论了驼背鲈鳃结构与功能的密切关系．[著者文摘]

Inglés. The histological, surface and internal fine structures of gill filaments of Cromileptes altivelis were investigated using light, scanning and transmission electron microscopy. The results showed that the surface structure and ultrastructure of gill filaments and secondary gill lamellae of C. altivelis were similar to those of other teleosts. Various features such as regular or irregular circular microridges, indentations, mieropits and crevices were present. The arrangement of gills were tight, the terminal of gill filament expanded. The respiratory surface of sill filament was rough and highly fulled of capillary vessels; there were many holes among the respiratory surface of gill filament. Many secondary gill lamellae showed folds and were not smooth, they were arranged on two sides of each filament. The basic structure of the secondary lamellae consisted of two outer epithelial layers, the pillar cells that distract epithelial layers. The chloride secretory cells were frequently found in gill filaments, secondary gill lamellae, they often seemed to be open at the surface between adjacent epithelial cells. The close relationships between the structure of fish gill and its function were discussed.