| 长鳍吻(鱼句)年龄和生长的研究 |
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| 引用本文： | 段中华,常剑波,孙建贻.长鳍吻(鱼句)年龄和生长的研究[J].淡水渔业,1991(2). |
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| 作者姓名： | 段中华 常剑波 孙建贻 |
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| 作者单位： | 中国科学院水生生物研究所 武汉 |
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| 摘 要： | 对443尾长鳍吻鮈标本作了年龄和生长研究。用鳞片鉴定年龄并退算鱼的生长.得出体长与鳞径、体长与体重的相关式及生长方程。体重生长拐点在2.2龄。限制捕捞3龄以下个体,有利于资源增殖.
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| 关 键 词： | 长鳍吻鮈 年龄 生长 长江 |
AGE AND GROWTH OF RHINOGOBIO VENTRALIS IN CHANGJIANG RIVER |
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| Duan Zhonghua,Chang Jianbo and Sun Jianyi.AGE AND GROWTH OF RHINOGOBIO VENTRALIS IN CHANGJIANG RIVER[J].Freshwater Fisheries,1991(2). |
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| Authors: | Duan Zhonghua Chang Jianbo and Sun Jianyi |
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| Abstract: | This paper deals with the age and growth of Rhinogobio ventralis based on the 443 specimens collected from
Changjiang River. The scale has been used to determine the age and growth rate of the fish. The relation between body
length and scale radius is shown by the equation: L=34. 450+2.848R. The weight-length relation can be expressed
by the power function equation: W=1. 350×10~(-5)L~(3.0251). The growth equation is L_1=269. 21-e~(-0.4768(1+0.0656))], W_1
=303. 1 1-e~(-0.4758(1+0.0656))]~(3.0251).The corrdination of inflexion point is at t_1=2.2Yr, W_1=88. 9g. |
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| Keywords: | Rhinogobio ventralis age growth Changjiang River |
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