南方鲇幼鱼胃和肝脏的组织结构及其在饥饿过程中的变化

描述了南方鲇（Ｓｉｌｕｒｕｓｍｅｒｉｄｉｏｎａｌｉｓ）幼鱼的胃和肝脏的基本形态和组织结构及其在饥饿过程中的变化．发现随饥饿时间延长，胃粘膜皱褶高度、粘膜下层厚度、上皮细胞高度及胃腺厚度均有明显减少趋势．肌肉层厚度呈先降后升再下降的趋势．饥饿过程中还发现各层组织，特别是肌肉层有结缔组织增生和崩溃疏松的现象．饥饿鱼肝脏的肝细胞体积明显减小，细胞索紊乱，细胞间隙增大．胃的上皮细胞高度和胃腺厚度可作为南方鲇幼鱼营养状况的指标

Histology of stomach and liver in Silurus meridionalis and their change during starvation

The histology of stomach and liver in southem catfish( Silurus meridionalis Chen )and their changes during starvation are described.It is observed that the height of rugae,the thickness of the submucosa layer,the depth of epithelial cell,the thicknes of mucosa layer obviously decreased during the starvation.The thickness of muscal layer decreased at first starvation period,then increased,and decreased to the pre starvation state at last.The connective tissue increasing with stavation.Liver tissue of starving southern catfish was fractinated and exhibited loss of cellular cord arrangement and contained wide intercellular spaces.The result suggests that the depth of epithelial cell and the thickness ofmucola layer can be as good indictors of nutrional condition in southern catfish.