| 南沙群岛西南陆架区深水金线鱼的资源现状 |
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| 引用本文： | 黄梓荣,陈作志.南沙群岛西南陆架区深水金线鱼的资源现状[J].广东海洋大学学报,2005,25(1):35-38. |
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| 作者姓名： | 黄梓荣 陈作志 |
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| 作者单位： | 中国水产科学研究院南海水产研究所渔业资源与捕捞技术研究室,广东,广州,510300 |
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| 摘 要： | 根据 2003年南沙群岛西南陆架区春秋两次调查资料,分析南沙群岛西南陆架区深水金线鱼的资源现状。结果表明,深水金线鱼分布广泛,平均渔获率为 9. 9kg·h-1,渔获率有明显的季节变动,秋季高于春季,密集分布于 71~80m水深。其群体组成也有季节差异,春季的平均体长、平均体重大于秋季,优势体长组春季为 131 ~140mm,秋季为 121~130mm,渔获优势年龄组为Ⅰ ~Ⅱ龄鱼。目前其资源密度及资源量分别为 129. 41kg·km-2和9 .484 21t,资源量是原始资源量的 46%,该资源已明显衰退。同时文中还讨论了合理利用该资源的措施。
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| 关 键 词： | 深水金线鱼 资源现状 南沙群岛西南陆架区 |
| 文章编号： | 1007-7995(2005)01-0035-04 |
| 修稿时间： | 2004年4月27日 |
Stock Actuality of Nemipterus bathybius in Southwestern Continental of Nansha Islands |
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| HUANG Zi-rong,CHEN Zuo-zhi.Stock Actuality of Nemipterus bathybius in Southwestern Continental of Nansha Islands[J].Journal of Zhanjiang Ocean University,2005,25(1):35-38. |
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| Authors: | HUANG Zi-rong CHEN Zuo-zhi |
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| Abstract: | The stock actuality of Nemipterus bathybius is analyzed according to recent survey data in southwestern continental of Nansha Islands of spring and autumn in 2003. The results show that their distribution are broad in areas, with the average catch rate is 9.9 kg·h -1. The catch rate has obviously seasonal variation, and is higher in autumn than in spring, but the average body-length and body-weight are improved in spring than in autumn. The stock predominant body-length are between 131~140 mm in spring and 121~130 mm in autumn, and they distributes mainly in depth of 71~80 m. The predominant catch age isⅠ~Ⅱ. The resource density and the resource quantity of Nemipterus bathybius are 129.41 kg·km -2 and 9 484.21 t. The resource quantity is only 46% of the original resource quantity. The resource of this species has decayed markedly. The utilizing measures are also discussed in the paper. |
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| Keywords: | Nemipterus bathybius stock actuality southwestern continental of Nansha Islands |
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