摘要
应用光学显微镜、扫描电镜和透射电镜对波纹唇鱼(Cheilinus undulatus)鳃的组织结构、表面形态特征及鳃小片超微结构进行了观察。结果表明,波纹唇鱼有3对全鳃,1对半鳃和1对伪鳃,鳃丝呈梳状紧密排列在鳃弓上,鳃小片紧密地镶嵌排列在鳃丝两侧,入鳃动脉、出鳃动脉和鳃小片毛细血管网组成鳃的血液系统。鳃丝非呼吸区分布有沟、坑、孔等结构,呼吸区较为平滑。鳃丝表面多为上皮细胞,但形态有所差别,非呼吸区上皮细胞有较规则的指纹状微嵴;而呼吸区上皮细胞表面无微嵴,呈皱褶状;在呼吸区和非呼吸区之间的过渡区上皮细胞有不规则指纹状微嵴,融合现象明显。非呼吸区有氯细胞、黏液细胞游离端向外的开口。氯细胞主要分布在鳃小片基部,胞内有大量线粒体和排泄小泡。鳃小片由上皮细胞、基膜、内皮细胞和柱细胞构成,形成特殊的水/血屏障双层结构,内部为发达的毛细血管网,充满血液。本文还探讨了波纹唇鱼鳃的结构与其功能的密切关系。
The histological, surface and internal fine structures of gill filaments of Cheilinus undulatus were investigated using light, scanning and transmission electron microscopy. The results showed that there were 3 pairs of holobranch, 1 pair of hemibranch and 1 pair of pseudobranchia. The comb primary filaments lined on the gill arches closely. Many secondary gill lamellae inlaid on two sides of each filament, and arranged each other closely. The blood system of filament was composed of afferent artery,efferent artery and capillary vessel nets. Various features such as indentations, micropits and crevices were present on non-respiratory surface of filaments. The respiratory surface of filaments was folded. The filaments were covered by epithelial cells, which had different surface features in different areas. It had regular fingerprint shape microridges in non-respiratory surface,no microridge but folded surface in respiratory area and irregular microridges in the transition region. There were many holes on the non-respiratory surface. Chloride cells and mucous cells were observed and many mitochondria and excretion vesicles distributed in chloride cells. Secondary filaments were consisted of epithelial ceils,basement membranes,endothelial cells and pillar cells. These structures formed the water-blood barrier.The close relationship between the structure of fish gill and its function was discussed.
出处
《动物学杂志》
CAS
CSCD
北大核心
2011年第1期7-15,共9页
Chinese Journal of Zoology
基金
国家"863"项目(No.2006AA10A414)
关键词
波纹唇鱼
鳃丝
光镜
超微结构
Cheilinus undulatus
Gill filaments
Light microscope
Ultrastructure
