华中农业大学学报2026，Vol.45Issue(2)：18-27,10.DOI:10.13300/j.cnki.hnlkxb.2026.02.003
黄石爬鮡消化系统形态学和组织学特征
Morphological and histological study on digestive system of Euchiloglanis kishinouyei
摘要
Abstract
To investigate the characteristics of the digestive system of Euchiloglanis kishinouyei,a se-ries of studies were conducted on its feeding organs and digestive tract using morphological and histological approaches.The results showed that E.kishinouyei has densely packed teeth on both the upper and lower jaws,with the upper tooth band extending distinctly backward.The esophagus is short and thick,and the stomach is U-shaped with a relatively large capacity.The intestine can be divided into the foregut,midgut,and hindgut based on two distinct bends.The foregut is enlarged,with an intestinal coefficient of 0.45±0.06.The liver exhibits a unique main-accessory liver structure:the main liver,divided into two lobes(a long left lobe and a short right lobe),is located at the anterior end of the abdominal cavity,while the accessory liver extends into the subcutaneous space behind the base of the pectoral fins via a connective band that passes through the body wall.Both sides of the accessory liver are morphologically similar.The hepatosomatic in-dex(HSI)was(0.65±0.46)%for the main liver and(0.54±0.27)%for the accessory liver.Histological observations revealed well-developed taste buds around the lips and on the barbels.The esophageal muscula-ture consists entirely of striated muscle,with longitudinal muscle bundles distributed in the submucosa.Nu-merous well-developed gastric glands were found in the corpus region of the stomach,and the circular mus-cle layer in the pyloric region was markedly thickened.Among the intestinal sections,the mucosal folds in the anterior intestine were the tallest,while the ratios of mucosal fold height to intestinal diameter remained relatively high in both the midgut and hindgut.Goblet cell numbers were lowest in the midgut and signifi-cantly higher in the hindgut.The well-developed taste buds,large accessory liver,and high relative height of intestinal mucosal folds reflect the species'strong adaptation to fast-flowing water environments.These findings provide a theoretical foundation for developing domestication strategies for E.kishinouyei.关键词
黄石爬鮡/消化系统/形态学/组织学/副肝Key words
Euchiloglanis kishinouyei/digestive system/morphology/histology/accessory liver分类
农业科技引用本文复制引用
余宗泽,刘季松,王海州,苏晓静,杨学芬,杨瑞斌..黄石爬鮡消化系统形态学和组织学特征[J].华中农业大学学报,2026,45(2):18-27,10.基金项目
华电集团金沙江上游远期放流鱼种人工繁育技术研究项目(T-2022-04) （T-2022-04）
