| 池养条件下军曹鱼仔鱼的消化道内容物 |
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| 引用本文： | 汤保贵,陈刚,施钢,吴灶和.池养条件下军曹鱼仔鱼的消化道内容物[J].广东海洋大学学报,2006,26(1):12-16. |
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| 作者姓名： | 汤保贵 陈刚 施钢 吴灶和 |
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| 作者单位： | 1. 广东海洋大学水产学院,广东,湛江,524025;中国科学院南海海洋研究所,广东,广州,510301
2. 广东海洋大学水产学院,广东,湛江,524025 |
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| 基金项目： | 国家863科技计划项目(2002AA603012) |
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| 摘 要： | 采用光镜解剖观察的方法对池塘培育的1~20日龄军曹鱼仔鱼消化道内容物的种类、数量和大小进行研究。结果显示:军曹鱼仔鱼于2日龄开口,主要摄食桡足类无节幼体和桡足幼体及枝角类;在2~20日龄阶段,桡足类在军曹鱼仔鱼食谱中占据主要成分;从13日龄开始摄食虾、蟹类幼体等大型浮游动物,两个阶段的食物选择性指数存在显著差异。
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| 关 键 词： | 军曹鱼仔鱼 消化道内容物 生物饵料 类别 食物选择性指数 |
| 文章编号： | 1007-7995(2006)01-0012-05 |
| 修稿时间： | 2005年4月1日 |
Alimentary Canal Contents of Cobia(Rachycentron canadum)Larvae Cultured in Ponds |
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| TANG Bao-gui,CHEN Gang,SHI Gang,WU Zao-he.Alimentary Canal Contents of Cobia(Rachycentron canadum)Larvae Cultured in Ponds[J].Journal of Zhanjiang Ocean University,2006,26(1):12-16. |
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| Authors: | TANG Bao-gui CHEN Gang SHI Gang WU Zao-he |
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| Abstract: | The species,numbers and sizes of the alimentary canal contents of cobia larvae of 1～20 days after hatching(DAH)cultured in ponds were studied by anatomization and observation with optical anatomical lens.The results showed that the first-feeding occurred on 2 DAH,and preyed mainly on copepod nauplius,larval copepod and cladocera,the recipe was chiefly composed of copepod,and large zooplanktons.Larval shrimp and crab could also be fed from 13 DAH.There was significant difference in food selective indexes between the two stages. |
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| Keywords: | cobia larvae alimentary canal contents live food taxon food selective index |
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