棘头梅童鱼消化道形态与组织学结构特征
PDF下载 (286)徐万土,陶顺顺,曾 肖,徐芳君,陈 裕.棘头梅童鱼消化道形态与组织学结构特征[J].宁波大学学报(理工版),2022,35(2):15-21.DOI:
XU Wantu,TAO Shunshun,ZENG Xiao,XU Fangjun,CHEN Yu.Morphology and histological structure of digestive tract of Collichthys lucidus[J].Journal of Ningbo University(Natural Science & Engineering Edition),2022,35(2):15-21.DOI:
| Title: | Morphology and histological structure of digestive tract of Collichthys lucidus |
| 作者: | 徐万土, 陶顺顺, 曾 肖, 徐芳君, 陈 裕 |
| Author(s): | XU Wantu, TAO Shunshun, ZENG Xiao, XU Fangjun, CHEN Yu |
| 关键词: | 棘头梅童鱼; 解剖学; 组织学; 食性 |
| Keywords: | Collichthys lucidus; anatomy; histology; feeding habit |
| 分类号: | S917.4 |
| 文献标识码: | A |
| 摘要: | 为了解棘头梅童鱼消化道形态结构特点, 采用解剖及石蜡切片技术对其进行研究. 结果显示, 棘头梅童鱼的消化道由口咽腔(舌)、食道、胃、幽门盲囊和肠组成. 舌由基舌骨突出外覆黏膜而成, 黏膜上皮为复层扁平上皮, 内含少量味蕾及黏液细胞. 食道、胃、幽门盲囊及肠均可分为黏膜层、黏膜下层、肌层及浆膜层. 食道粗短, 黏膜层被覆复层扁平上皮, 内含大量黏液细胞. 胃呈卜型, 且具有体积较大的胃盲囊. 胃上皮为单层柱状上皮, 上皮之下的固有膜内分布有大量胃腺. 幽门盲囊位于胃与前肠连接处, 呈指状, 有12~17根, 其组织学结构与肠道相似. 肠呈“S”型盘曲, 肠指数为0.72±0.10, 黏膜层被覆单层柱状上皮, 其间分布有少量杯状细胞. 棘头梅童鱼消化道各部形态及组织学结构特征与其食性相适应. |
| Abstract: | The morphological and histological features of digestive tract of Collichthys lucidus were determined in the present study. The results show that the digestive tract consisted of five parts including oropharyngeal cavity, esophagus, stomach, pyloric caecum and intestine. The oropharyngeal cavity contained a short tongue and is formed by the projecting part of basihyoid covered by mucosa. The mucosa epithelium of tongue was stratified squamous epithelium and contained several taste buds or mucous cells. The esophagus, stomach, pyloric caeca and intestine were consisted of the mucosa, sub mucosa, muscle layer and serosa tissues. The esophagus was short and wide and present with many mucous cells in the stratified squamous epithelium. The stomach was λ-shaped and abundant in gastric glands. There were 12-17 finger-shaped pyloric caeca located to the connective part of stomach and intestine. The histological structure of pyloric caecum was similar to the intestine and covered with single columnar epithelium that contained a small number of mucous cells. In addition, the intestine was short and S-shaped, with the intestine index being 0.72±0.10. This study reveals that the features of morphology and histological structure of digestive tract of C. lucidus was in consistency with its feeding habits and digestive functions. |
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| 备注/Memo: | 收稿日期: 2021－10－17. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 第一作者: 徐万土（1973－）, 男, 浙江象山人, 工程师, 主要研究方向: 海水鱼类繁育与遗传育种. E-mail: xuwantu@163.com 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
