| 长江湖口水域四大家鱼幼鱼的耳石与生长研究 |
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| 引用本文： | 李建军,吴志强,胡茂林.长江湖口水域四大家鱼幼鱼的耳石与生长研究[J].水生态学杂志,2010,31(6):56-61. |
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| 作者姓名： | 李建军 吴志强 胡茂林 |
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| 作者单位： | 1. 南昌大学生命科学与食品工程学院,江西,南昌,330031
2. 南昌大学生命科学与食品工程学院,江西,南昌,330031;桂林理工大学环境科学与工程学院,广西,桂林,541004 |
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| 基金项目： | 国家自然科学基金（30760188） |
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| 摘 要： | 采用微耳石日轮鉴定了2009年7-8月采自长江湖口水域的23尾青鱼幼鱼、111尾草鱼幼鱼、73尾鲢幼鱼和70尾鳙幼鱼的日龄，其平均日龄分别为52.4±5.6d、57.1±10.6d、49.8±4.7d和57.5±7.1d。回归分析表明，四大家鱼幼鱼微耳石短半径与日龄及鱼体大小均呈显著线性关系，日龄与体长、体重也均呈显著线性关系。依据日龄推算，青鱼、草鱼、鲢和鳙幼鱼的体长平均生长率分别为0.1651 cm/d、0.1426cm/d、0.0928 cm/d、0.0997 cm/d，体重平均生长率分别为0.9412 g/d、1.0211g/d、0.4978 g/d、0.7292 g/d。
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| 关 键 词： | 四大家鱼幼鱼 微耳石 日轮 日龄 生长 |
| 收稿时间： | 5/18/2010 4:51:55 PM |
| 修稿时间： | 2010/6/19 0:00:00 |
The study on otolith and growth in Juvenile of the four domestic fishes from hukou section of the Yangtze River |
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| li jian jun,wu zhi qiang and hu mao lin.The study on otolith and growth in Juvenile of the four domestic fishes from hukou section of the Yangtze River[J].Journal of Hydroecology,2010,31(6):56-61. |
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| Authors: | li jian jun wu zhi qiang and hu mao lin |
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| Affiliation: | School of Life Sciences and Food Engineering, Nanchang University |
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| Abstract: | The daily ages of 23 juvenile black carps, 111 juvenile grass carps, 73 juvenile silver carps and 70 juvenile bigheads collected from hukou section of the Yangtse River in July and August, 2009, were determined by observing the daily increment of 1apillus. Average age of juvenile black carps, grass carps, silver carps and bigheads were 52.4±5.6d, 57.1±10.6d, 49.8±4.7d and 57.5±7.1d, respectively. Regression analysis shows that, short radius of lapillus of the four domestic fishes were all in a linear correlation with the daily age and body length and weigh. Daily age were also in a linear correlation with body length and weigh. Calculated based on the daily age, growth rate of body length of juvenile black carps, grass carps, silver carps and bigheads were 0.1651 cm/d, 0.1426cm/d, 0.0928 cm/d and 0.0997 cm/d, growth rate of body weigh were 0.9412 g/d, 1.0211g/d, 0.4978 g/d and 0.7292 g/d. |
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| Keywords: | Juvenile of the four domestic fishes 1apillus Daily increment daily age growth |
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