| 摘要: |
| 2002年3月, 威海海域发现文昌鱼研究观察了威海海域文昌鱼的主要形态特征, 并与Branchiostoma belcheri和Branchiostoma japonicum做了相应比较, 初步探讨其分类地位,结果表明, 威海海域文昌鱼在体长与体高的比值(平均10.78±0.69)、肌节总数(平均67.12±0.87)、腹孔前肌节数(平均38.83±0.53)、腹孔一肛门节数(平均17.61±0.78)、肛门后肌节数(平均10.67±0.80)、背鳍室数目(平均308.55±1 |
| 关键词: 文昌鱼 威海海域 形态特征 分类 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目(40376042) |
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| Thte morphology and taxonomy of amphioxus in the coastal waters of Weihai |
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| Abstract: |
| Amphioxus was found in Weihai waters in March, 2002. In this paper, the main morphological characters of amphioxus from Weihai waters are observed and compared with corresponding characters of Branchiostoma belcheri and Branchiostoma japonicum to probe its taxonomic status primarily. The results show that the amphioxus from Weihai waters coincides, with Branchiostoma japonicum from Qingdao waters on the main morphological characters such as the ratio of body length to body depth(10.78±0.69), the total number of myotomes(67.12±0.87), the number of myotomes anterior to atripore(38.83±0.53), the number of myotomes between atriopore and anus(17.61±0.78), the number of myotomes posterior to anus(10.67±0.80), the number of dorsal fin-chanmbers(308.55±15.65), the number of ventral fin-chambers(57.26±5.07), the number of gonads on the left side(25.69±2.24), and the number of gonads on the right side(28.20±2.03). The developing condition of the amphioxus from Weihai waters in April corresponds with that of Branchiostoma japonicum and is different from that of Branchiostoma belcheri. The amphioxue from Weihai waters in Branchiostoma japonicum. This study provides the basic data of amphioxus from Weihai waters, and also offers the essential evidence to protect and develop the resources of amphioxus. |
| Key words: amphioxus Branchiostoma belcheri Branchiostoma japonicum Eeihai waters morphological charscters taxonomy |
