| 摘要: |
| 于2006 年4～7 月在湛江硇洲岛海域采集文昌鱼, 进行春夏季节不同性别、不同体长组等的胃含物观察分析。结果表明, 湛江硇洲岛文昌鱼消化道残留食物成分以泥沙碎屑为主, 可辨生物成分有 34种,大部分为底栖硅藻, 占58.8%, 也有少量甲藻、瓣鳃类幼虫、底栖桡足类幼虫和原生动物等。春夏季节的文昌鱼的摄食喜好不尽相同, 饵料生物的出现率随着季节的变化有所变化。不同性别文昌鱼的摄食喜好比较相近。文昌鱼到了性腺成熟后才开始进食动物性食物。研究结果表明, 文昌鱼摄食藻类、微生物等而自身转化为其他动物的较高营养层次食物, 在海洋食物网中具有一定的重要作用。 |
| 关键词: 湛江硇洲岛 文昌鱼Branchiostoma belcheri 胃含物分析 食性 |
| DOI： |
| 分类号: |
| 基金项目:广东省自然科学基金项目(33981) |
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| Preliminary analysis of the feeding habits of amphioxus, Branchiostoma belcheri (Grey), found at Naozhou Island of Zhanjiang |
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YAN Yun-rong,LU Huo-sheng,BAI Xiu-juan,ZHAO Hao-bo,LIAO Chuan-yi
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| Abstract: |
| This paper described the observations and analysis of the stomach content of amphioxus regarding to spring and summer season, gender and body length. The samples were captured by special device, with a cross-section of 0.075m2, at the Naozhou Island Sea area outside Zhanjiang City from April to July of 2006. Food residue found in the alimentary canal of the amphioxus was mainly made up of mud and sand debris. In addition, Thirty-four species of organism were identified, including benthic diatom, at a percentage of 58.8%, as well as a few dinophyta, lamellibranch larva, copepods larva, and protozoa. The feeding habits of amphioxus were not the same, and the occurrence of its food materials was also different in spring and summer. The feeding habits of amphioxus were similar between different genders. The lancelets began to take animal food when they were mature. |
| Key words: Naozhou Island Sea Area amphioxus (lancelet) stomach contents analysis feeding habits |
