| 摘要: |
| 利用神经丘荧光染色、组织切片、扫描电镜对鳜（Siniperca chuatsi）后部侧线系统的胚后发育过程与结构特点进行了研究。结果显示，在6—10 dpf期间躯干已出现前体管道神经丘（L1—L7），至58 dpf后部侧线系统主要结构发育完成，23—58 dpf后部侧线系统神经丘结构变化、数量增长均较为明显，同时侧线管道也在这一时期建立完成；躯干上由水平、垂直方向敏感的表面神经丘交替排列，躯干侧线管道系统属于完整弓形结构，管道侧线与表面神经丘均集中排列于躯干背侧。研究结果表明，鳜侧线管道结构、神经丘结构发育与排布方式增强了其后部侧线系统对上层水体的感知能力，上述结构特征与鳜底栖生活习性相适应。本研究为解读鳜侧线系统结构提供了重要研究资料，也为鲈形目其他鱼类的比较研究提供了具体参考。 |
| 关键词: 鳜 后部侧线系统 发育 神经丘 侧线管道 |
| DOI：10.11693/hyhz20200400124 |
| 分类号:S917.4 |
| 基金项目:国家现代农业产业技术体系专项，CARS-46号。 |
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| POSTEMBRYONIC DEVELOPMENT OF THE POSTERIOR LATERAL LINE SYSTEM OF MANDARINFISH SINIPERCA CHUATSI |
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ZHANG Rui-Qi1,2, ZHAO Jin-Liang1,2
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1.Key Laboratory of Freshwater Fishery Germplasm Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;2.Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China
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| Abstract: |
| The postembryonic development and structural characteristics of the posterior lateral line system of mandarinfish Siniperca chuatsi were studied by means of neuromast fluorescence staining, histological section, and scanning electron microscopy. The results show that the presumptive canal neuromast (L1-L7) appeared on the trunk during 6-10 dpf, the main structure of the posterior lateral line system was completed on 58 dpf. The structure and quantity of neuromast in the posterior lateral line system changed obviously during 23-58 dpf, and the lateral line canal was also established during this short period. The horizontal and vertical sensitive superficial neuromasts were arranged alternately on the trunk surface, and the lateral line canal system on the trunk belonged to the complete-arched type. The lateral line canal and superficial neuromasts were all arranged in dorsal side of the trunk. It was shown that rapid development of the posterior lateral line system of mandarinfish during 23-58 dpf adapted to its gradual benthic habits during this period. All the structure and arrangement of lateral line canal and neuromast enhanced the perception of the posterior lateral line system to the upside, which is consistent with the benthic habit of mandarinfish. This study provides important data for understanding the lateral line system structure of mandarinfish as a specific reference for the comparative study in perciformes. |
| Key words: mandarinfish Siniperca chuatsi posterior lateral line system development neuromast lateral line canal |
