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常永杰, 周佳佳, 张丽红, 孟佑廉, 高泽霞. 刀鲚肌间骨新类型的发现[J]. 水生生物学报, 2020, 44(1): 104-111. DOI: 10.7541/2020.013
引用本文: 常永杰, 周佳佳, 张丽红, 孟佑廉, 高泽霞. 刀鲚肌间骨新类型的发现[J]. 水生生物学报, 2020, 44(1): 104-111. DOI: 10.7541/2020.013
CHANG Yong-Jie, ZHOU Jia-Jia, ZHANG Li-Hong, MENG You-Lian, GAO Ze-Xia. THE IDENTIFICATION OF NEW TYPES OF INTERMUSCULAR BONES IN COILIA NASUS[J]. ACTA HYDROBIOLOGICA SINICA, 2020, 44(1): 104-111. DOI: 10.7541/2020.013
Citation: CHANG Yong-Jie, ZHOU Jia-Jia, ZHANG Li-Hong, MENG You-Lian, GAO Ze-Xia. THE IDENTIFICATION OF NEW TYPES OF INTERMUSCULAR BONES IN COILIA NASUS[J]. ACTA HYDROBIOLOGICA SINICA, 2020, 44(1): 104-111. DOI: 10.7541/2020.013

刀鲚肌间骨新类型的发现

THE IDENTIFICATION OF NEW TYPES OF INTERMUSCULAR BONES IN COILIA NASUS

  • 摘要: 文章对刀鲚(Coilia nasus)的肌间骨数目、形态、分布特征及组织学结构进行了系统研究。结果表明刀鲚肌间骨的形态种类与普通鲤科鱼类没有显著差别, 但其分布类别却有很大不同, 刀鲚不仅有髓弓小骨、椎体小骨和脉弓小骨, 且在其背部上方和腹部下方仍存在大量肌间骨, 这两类肌间骨的形态为简单的“1”形和“(”形, 分别位于背部上方和腹部下方肌膈的皱褶部; 在短颌鲚(C. brachygnathus)背部上方和腹部下方也发现这两类肌间骨的存在, 统称为肌骨杆(Myorhabdoi)。刀鲚个体肌间骨数目范围为492—543, 其中髓弓小骨为114—142 (\bar x=133), 椎体小骨为28—51 (\bar x=42), 脉弓小骨为138—153 (\bar x=142), 背上肌骨杆为92—135 (\bar x=114), 腹下肌骨杆为66—98 (\bar x=89)。采用茜素红与阿利新蓝组织染色观察不同类型肌间骨的组织结构特征, 结果显示肌间骨由肌膈结缔组织包被, 在髓弓小骨和脉弓小骨两种类型中, 肌间骨之间通过结缔组织相互连接。研究在鱼类背上肌骨杆和腹下肌骨杆的发现, 是对我国鱼类肌间骨系统进化研究的进一步补充。

     

    Abstract: Intermuscular bones (IBs) are common in the lower teleost and its morphology types and numbers are varied among different fish species. In this study, we documented the number, morphology, and distribution of IBs in Coilia nasus. The morphology of IBs in C. nasus was not different with Cyprinidae species; however, the distribution of IBs was quite different. Besides epineurals, epicentrals, and epipleurals, we found two others categories of IBs in C. nasus, which are located in the dorsal and ventral parts on both sides of the vertebrae. According to the reference, we called them dorsal and ventral myorhabdoi, respectively. These types of IBs were also identified in C. brachygnathus. The morphology of these IBs showed non-forked type (“1” or “(”). The number of IBs in C. nasus ranged from 492 to 543, and the number of epineurals, epicentrals, epipleurals, dorsal myorhabdoiand ventral myorhabdoi ranged from 114 to 142 (\bar x=133), 28 to 51 (\bar x=42), 138 to 153 (\bar x=142), 92 to 135 \bar x=114), 66 to 98 (\bar x=89), respectively. IBs can be stained by alizarin red, but not alcian blue. For epineurals and epipleurals, the IBs were connected with one by one through connective tissues. The study identified new categories of IBs that supplement the type of IBs in teleost.

     

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