水生生物学报2016，Vol.40Issue(6)：1201-1207,7.DOI:10.7541/2016.156
中华刺鳅消化系统形态与组织学研究
MORPHOLOGICAL AND HISTOLOGICAL CHARACTERIZATION OF THE DIGESTIVE SYSTEM OFSINOBDELLA SINENSIS BLEEKER, 1870
摘要
Abstract
Sinobdella sinensis Bleeker1870 widely distributes in the subtrophic freshwater of China and Vietnam, however, the morphology and histology of the digestive system ofS. sinensis have not been reported yet. In the present study, morphological and histological characteristics of the digestive system ofS. sinensis were studied by vivisection and histological observation. The results showed thatS. sinensis has a stomach but no pneumatic duct. The digestive tract is short and about 45% of the body length with a “Z”-shape. The esophagus is short and connected to the stomach which constitutes cardiac fundus and pyloricus parts. The glandular tissue is abundantly distributed from the end of eso-phagus to the fundus of stomach. The cardiac stomach occupies 23% of the whole stomach in length. However, abun-dant glandular tissues are only distributed in the cardiac part of esophagus. The structure of each part of the digestive tract is significantly differenct. In anterior gastric part, the ratio of gastrointestinal internal-circular muscle layer to ex-ternal-longitudinal muscle layer gradually increased and the number of goblet cells decreased and completely opposite observations occurd in posterior gastric part. The digestive glands included liver and pancreas, but no diffused pancreas tissue occurred in liver or spleen, like other Cyprinidae fish. Therefore, our results indicated thatSinobdella sinensis is a typical carnivorous fish and prey onMacrobranchium nipponense andExopalaemon modestus as the main food.关键词
中华刺鳅/消化系统/形态学/组织学Key words
Sinobdella sinensis/Digestive system/Morphology/Histology分类
生物科学引用本文复制引用
赵子明,赵媛莉,刘美剑,丁倩倩,刘林,章晋勇..中华刺鳅消化系统形态与组织学研究[J].水生生物学报,2016,40(6):1201-1207,7.基金项目
江苏农牧科技职业学院课题(NSFRC1304、00010115018) （NSFRC1304、00010115018）
国家自然科学基金(31472296) （31472296）
江苏省水产三新工程项目(D2015-11)资助[Supported by the Jiangsu Agri-animal Husbandary and Vocational College Project (NSFRC1304、00010115018) （D2015-11）
National Natural Science Foundation Project of China (31472296) （31472296）
“Three-new” Aquaculture Project of Jiangsu Province (D2015-11) （D2015-11）
