| 南海北部带鱼生长死亡与参数动态综合模式 |
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| 引用本文： | 朱江峰,邱永松.南海北部带鱼生长死亡与参数动态综合模式[J].海洋学报,2005,27(6):93-99. |
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| 作者姓名： | 朱江峰 邱永松 |
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| 作者单位： | 1.中国水产科学研究院南海水产研究所 广东广州 510300;上海水产大学海洋学院 上海 200090 |
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| 基金项目： | 国家海洋勘测专项南海区渔业资源调查资助项目. |
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| 摘 要： | 根据我国近海带鱼分种研究结果,利用南海北部底拖网调查收集的带鱼属3鱼种的生物学资料,运用长度频率法估算了3鱼种的生长和死亡参数.带鱼、南海带鱼和短带鱼von Bertalanffy生长方程的渐近肛长分别为70.0,54.5和48.0 cm;生长系数分别为0.27,0.27和0.17;理论生长起点年龄分别为-0.60,-0.68和-1.10龄.用长度变换渔获曲线法估算的3鱼种总死亡系数分别为3.02,0.80和2.43;用经验公式估算的自然死亡系数分别为0.39,0.58和0.44;捕捞死亡系数分别为2.63,0.22和1.99.动态综合模式的分析结果表明,3鱼种都能承受较大的捕捞压力,资源利用的不合理之处是大量捕捞1龄以内的幼鱼;在最适利用状态下,带鱼、南海带鱼和短带鱼的开捕年龄分别应为3.0,2.0和2.7龄,对应的肛长分别为44,28和23 cm.
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| 关 键 词： | 带鱼属 生长 死亡 动态综合模式 南海北部 |
| 文章编号： | 0253-4193（2005）06-0093-07 |
| 收稿时间： | 2004-07-20 |
| 修稿时间： | 2004-07-202005-04-20 |
Growth and mortality of hairtails and their dynamic pool models in the northern South China Sea |
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| ZHU Jiang-feng and QIU Yong-song.Growth and mortality of hairtails and their dynamic pool models in the northern South China Sea[J].Acta Oceanologica Sinica (in Chinese),2005,27(6):93-99. |
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| Authors: | ZHU Jiang-feng and QIU Yong-song |
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| Institution: | 1.South China Sea Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China;Ocean College, Shanghai Fisheries University, Shanghai 200090, China2.South China Sea Fisheries Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China |
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| Abstract: | On the basis of taxonomy of genus Trichiurus and length frequency data collected by traw l survey in the northern South China Sea,growth and mortality parameters for three species of Trichiurus were estimated.For T.haumela,T.nanhaiensis and T.brevis,the asymptotic anus lengths estim ated with ELEFANⅠ in von Bert alanffy growth function were separately 70.0,54.5 and 48.0 cm,growth rates 0.27,0.27 and 0.17,and initial condition parameter was -0.60,-0.68 and -1.10 a.Total mortality coefficients for the three speciesest imated by length-converted catch curves were 3.02,0.80 and 2.43,natural mortality coefficients by the Pauly empirical formula 0.39,0.58 and 0.44,and fishing mortality coefficients 2.63,0.22 and 1.99 respectively.Dynamic pool models indicated that exploitation of the stocks was unrational due to catches of large proportions of 0-age-group juveniles,although the stocks could sustain high fishing pressure.It is suggested that,for T.haumela,T.nanhaiensis and T.brevis,the ages at the first capture is increased to 3.0 ages (44 cm in anus length),2.0 ages (28 cm in anus length) and 2.7 ages (23 cm in anus length) respectively. |
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| Keywords: | Trichiurus growth mortality dynamic pool model northern South China Sea |
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