摘要
应用扫描电镜对斑点叉尾(Ictalurus punctatus)鳃的表面微细结构进行了观察。结果表明,斑点叉尾鳃的表面结构和微细结构与其他硬骨鱼类基本相似,鳃弓和鳃耙表面被具环形微嵴的扁平上皮细胞所覆盖,鳃弓表面细胞之间有孔洞;鳃耙基部较粗壮;中部鳃丝上皮细胞表面的微嵴两侧有细小的横突,有些微嵴出现融合或间断;端部和基部鳃丝上皮细胞表面的微嵴消失,形成密集颗粒状突起;鳃小片的高度和片间距较大。讨论了斑点叉尾鳃的形态结构与其生理功能的关系。
The surface uhrastructure of the gill in channel catfish Ictalurus punctatus was investigated by using scanning electron microscopy. The result showed that the surface architecture and ultrastructure of l. punctatus＇ gill and secondary gill lamellae were similar to those of other teleosts. The surface of gill arches and gill rakers was covered with pavement cells which were characterized by circular microridges, and secreting-holes were found among cells on the surface of gill arches. The base part of gill rakers were bigger in terms of diameter. The pavement cells＇ surface of gill filaments＇ middle part was characterized by microridges with fine lateral protuberances on both sides which were either fused or interruped, while the microridges disappeared on the pavement cells＇ surface on both top and base parts of gill filaments, forming dense granulated protuberances. The height and interlamellar space of secondary gill lamellae in I. punctatus were relatively higher and bigger, respectively. Finally, the relationship between the gill structure of this species and its physiological function was discussed.
出处
《南方水产》
2009年第5期52-56,共5页
South China Fisheries Science
基金
广东省重大科技兴海项目(200051A03)
广东省科技计划项目(2004A20105002)
关键词
斑点又尾鮰
鳃
微细结构
channel catfish （Ictalurus punctatus ）
gill
uhrastructure
作者简介
李加儿（1954-），男，研究员，从事水产基础叶：物学与繁育技术研究.E-mail：lje001@126．com
