文献类型：期刊文献

中文题名：波纹龙虾消化系统光镜和扫描电镜的观察

英文题名：Histological observation on digestive system of Panulirus homaru with light and scanning electron microscopy

作者：李长玲[1];曹伏君[1];黄翔鹄[1];刘楚吾[1]

机构：[1]广东海洋大学水产学院

年份：2008

卷号：27

期号：3

起止页码：72

中文期刊名：热带海洋学报

外文期刊名：Journal of Tropical Oceanography

收录：CSTPCD、、北大核心2004、CSCD2011_2012、北大核心、CSCD

基金：广东海洋大学自然科学研究项目(0312023)

语种：中文

中文关键词：波纹龙虾Panulirus;homarus;消化系统;组织学;扫描电镜

外文关键词：Panulirushomaru; digestive system; histology; SEM

中文摘要：对波纹龙虾Panulirus homaru消化系统进行了光镜和扫描电镜的观察。结果表明,波纹龙虾的消化系统由消化道和消化腺组成。消化道的组织结构由粘膜层、结缔组织层,肌层和外膜层构成;粘膜层由大量单层柱状上皮细胞和基膜构成。除中肠以外,其余各部分管壁均有几丁质。食道、中肠和后肠壁结缔组织中分布有腺体。胃和食道等的肌层为横纹肌。消化腺主要是肝胰腺,由无数的肝小管组成,肝小管均由位于基膜上的一层细胞构成。这些细胞有分泌细胞、储存细胞、吸收细胞和胚细胞四种类型。在扫描电镜下,消化道各段黏膜上皮表面均形成大小不一、具有形态各异的多级皱褶,以肠道中的纵褶及其上的横褶最为明显。除中肠和肠球外整个消化道均有较发达的纤毛丛。中肠和肠球中的微绒毛主要作用是增加吸收面积。

外文摘要：The histology of digestive system of Panulirus homaru was studied with light microscope and scanning electron microscope（SEM）. The results by light microscopy showed that the digestive system consisted of digestive tract and hepatopancreas. The wall of the digestive tract consisted of mucous layer, connective tissue, muscular layer and outer membrane. There was chitin in the surface of mucous layer except the mid-gut. There were glands in the tunica submucosa of esophagus, mid-gut and hindgut. The muscular coat of the whole digestive tract wall consisted of striated muscle and its arrangement was loose. The small blind tubules of hepatopancreas were functional and structural units in the hepatopancreas which were the main digestive glands. These cells could be divided into four types： B-cell, F-cell, R-cell and E- cell. The ultrastructural characteristics from SEM observation were showed that the multipolar folds and ridges in the surface of epithelium mucosa of each segment of the digestive tract wall took shape into different-sized and polymorphologic multigrade wrinkles which could add the absorptive area and contractive function. The Vertical wrinkles especially the transverse wrinkles on them were remarkable in the whole intestines. The developed lamina cilia in the surface of epithelium mucosa of the whole digestive tract ex- cept midgut and intestinal bulb could push the food forward and promote digestion, and the microvilli in the midgut and intestinal bulb could increase the surface area of absorption