| 长江湖口水域四大家鱼幼鱼的耳石与生长研究 |
| The study on otolith and growth in Juvenile of the four domestic fishes from hukou section of the Yangtze River |
| 投稿时间：2010-05-18 修订日期：2010-06-19 |
| DOI： |
| 中文关键词:四大家鱼幼鱼 微耳石 日轮 日龄 生长 |
| 英文关键词:Juvenile of the four domestic fishes 1apillus Daily increment daily age growth |
| 基金项目:国家自然科学基金（30760188） |
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| 中文摘要: |
| ２００９年７～８月在长江湖口水域采集青鱼、草鱼、鲢、鳙即俗称四大家鱼的幼鱼２３、１１１、７３、７０尾，采用微耳石日轮鉴定其平均日龄分别为（５２．４±５．６）、（５７．１±１０．６）、（４９．８±４．７）和（５７．５±７．１）ｄ。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、０.１４６、０.０９２８和０.０９９７ｃｍ／ｄ；体重平均生长率分别为０.９４１２、１.０２１１、
０.４９７８和０.７２９２ｇ／ｄ。
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| 英文摘要: |
| 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 Yangtse River in July and August, 2009，were determined by observing the daily increment of 1 apillus. Average age of juvenile black carps，grass carps，silver carps and big-heads were(52.4±5.6)，(57. 1±10.6)，(49.8±4.7)and ( 57.5 ±7.1)d，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 weight. Daily age were also in a linear correlation with body length and weight. Calculated based on the daily age，growth rate of body length of juvenile black carps，grass carps，silver carps and bigheads were 0. 1651，0. 1426，0. 0928 and 0.0997cm/d，growth rate of body weight were 0. 9412，1.0211，0.4978 and 0.7292 g/d.
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| 李建军,吴志强,胡茂林.2010.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,31(6):56-61. |
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