| 热带大西洋公海金枪鱼延绳钓渔获物上钩率的分析 |
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| 引用本文： | 戴小杰.热带大西洋公海金枪鱼延绳钓渔获物上钩率的分析[J].水产学报,2000,24(1). |
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| 作者姓名： | 戴小杰 |
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| 作者单位： | 1. 上海水产大学工程技术学院,200090
2. 中国水产科学研究院东海水产研究所,上海,200090 |
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| 基金项目： | 农业部渔业局资助!(三大洋金枪鱼研究 )，农渔远 :1999-5 0 |
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| 摘 要： | 报道 1 994年 1 1月至 1 996年 1 0月 (4～ 7月除外 )金丰 2号延绳钓船在中部大西洋公海 (0 9°N～ 0 5°S ,1 8°W～ 34°W )钓捕渔获物和各月经济鱼种上钩率的状况。经过鉴定共有 2 7种鱼类和一种海龟。在 2月的北纬渔场和 1 2月上半月在南纬西部渔场 (0 1°S～ 0 5°S ,2 4°W以西 ) ,大眼金枪鱼的上钩率达到高峰值 ,均大于 8‰ ,其它期间在钓捕海域上钩率在 2‰～ 8‰之间 ;在 1 1月、1 2月的北纬渔场和 1 2月上半月在南纬西部渔场 ,黄鳍金枪鱼的上钩率均大于 4‰ ,而在南纬中部渔场 (0 1°S～ 0 5°S ,2 4°W～ 1 8°W )黄鳍金枪鱼的上钩率最低 ,小于 1‰ ;箭鱼的上钩率在钓捕海域大体在 2‰以下 ,其它低经济价值的鱼上钩率几乎都小于 1‰。本文探讨了影响上钩率的因素。
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| 关 键 词： | 热带大西洋公海 延绳钓 渔获物种类 上钩率 |
| 收稿时间： | 2014/4/17 0:00:00 |
| 修稿时间： | 2014/4/17 0:00:00 |
Analysis on catch rate of tuna longline fishing in the high sea of tropical Atlantic Ocean |
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| Dai Xiaojie.Analysis on catch rate of tuna longline fishing in the high sea of tropical Atlantic Ocean[J].Journal of Fisheries of China,2000,24(1). |
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| Authors: | Dai Xiaojie |
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| Affiliation: | College of Engineering & Technology, Shanghai Fisheries University, 200090 |
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| Abstract: | Based on the investigation from November, 1994 to October, 1996( except April - July ) in
the high sea of tropical Atlantic Ocean ( 09..00..N - 5..00..S, 18..00..W - 34..00..W) by JING FENG NO. 2
longline fishing vessel, 27 species of f ish and one species of sea turtle were ident ified and catch rates of main
economic fish were analyzed. Catch rate of Bigeye tuna( Thunnus obesus Lowe) reached the highest( excess over 8
.. ) during February in north latitude and early December in the area 1..S - 5..S, west of 24..W. But in the other
area, catch rate fluctuated between 2 .. - 8 .. . Catch rate of yellowfin tuna ( Thunnus albacare ( Bonnaterre) )
reached the highest ( excess over 4 .. ) during November and December ( 1995) in north latitude fishing grounds
and early December in the area 1..S - 5..S, west of 24..W. Catch rate of yellowf in tuna in the area 1..S - 5..S,
24..W - 18..W from August to October. 1996 was less than 1 .. . Generally, catch rate of swordf ish was lower
than 2 .. in these fishing areas. Other low valued species catch rates were almost less than 1 .. . Effect factors on
catch rate were discussed. |
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| Keywords: | high seas of tropical Atlantic Ocean longline fishing catch species catch rate |
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