CAJ | 학술논문

解剖观察了哲罗鱼（Hucho taimen）和大麻哈鱼（Oncorhynchus keta Walbaum）的消化系统,描述了与摄食有关的齿、舌、鳃耙、胃、幽门盲囊、肝、胰脏、胆囊的形态特征;测量了体长、头长、吻长、口裂宽、口腔长,食道长、胃长、肠长、消化道长;计算了有关比值。结果表明：这二种鲑科鱼类的消化道具有典型的肉食性鱼类的特点,口裂较大,口咽腔长/头长为0.62～0.71,肠较短,肠长/体长为0.69,食道、胃、肠壁内突形成明显的粘膜皱褶。具有独立而发达的肝脏和胰腺。文中讨论了消化道分段及摄食习性与消化系统形态结构特点之间的关系。
해부관찰료철라어（Hucho taimen）화대마합어（Oncorhynchus keta Walbaum）적소화계통,묘술료여섭식유관적치、설、새파、위、유문맹낭、간、이장、담낭적형태특정;측량료체장、두장、문장、구렬관、구강장,식도장、위장、장장、소화도장;계산료유관비치。결과표명：저이충해과어류적소화도구유전형적육식성어류적특점,구렬교대,구인강장/두장위0.62～0.71,장교단,장장/체장위0.69,식도、위、장벽내돌형성명현적점막추습。구유독립이발체적간장화이선。문중토론료소화도분단급섭식습성여소화계통형태결구특점지간적관계。
The comparative morphological characteristics of teeth,tongue,gill rakers,stomach,pyloric caeca,liver,pancreas,and gallbladder were described in adult taimen(Hucho taimen) and chum salmon(Oncorhynchus keta).The body length,head length,snout length,mouth breadth,mouth length,and the lengths of esophagus,stomach,intestine and digestive tract were measured and some relevant ratios were calculated in both taimen and chum salmon.The results showed that the taimen and chum salmon had typical digestive tract characteristics of the carnivorous fish including big mouth,a ratio of oropharyngeal length to head length=0.62~0.71,and short intestine with intestinal length / body length =0.69.The clear mucosal folds were observed in the inner process of esophagus,stomach and intestinal walls.A separate and developed liver and pancreas was found and the relationships between section of the digestive tract,the feeding habits and morphological characteristics of the digestive system were discussed.