PRELIMINARY ANALYSIS OF THE RELATIONSHIP BETWEEN BIGEYE TUNA (THUNNUS OBESUS) VERTICAL DISTRIBUTION AND THE TEMPERATURE, SALINITY IN THE CENTRAL ATLANTIC OCEAN
PRELIMINARY ANALYSIS OF THE RELATIONSHIP BETWEEN BIGEYE TUNA (THUNNUS OBESUS) VERTICAL DISTRIBUTION AND THE TEMPERATURE, SALINITY IN THE CENTRAL ATLANTIC OCEAN
复制标题
中央大西洋大眼金枪鱼垂直分布与水温、盐度关系的初步分析
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
C. Xinjun
中科院分区：
文献类型：
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作者：
S. Liming;X. Liuxiong;C. Xinjun
根据2001年7月4日至2001年10月27日在中大西洋公海捕捞大眼金枪鱼的3艘中国金枪鱼延绳钓船随机采集的3条大眼金枪鱼上钩鱼的识别钩数，采用悬链线方程计算了大眼金枪鱼上钩鱼的游泳深度。盐度垂直剖面测量的标准偏差的指导下，钩深度。根据取样资料，利用频数统计法估算了大眼金枪鱼在不同水深、水温和盐度范围内的渔获率。大眼金枪鱼最大捕获率所对应的深度、水温和盐度范围，表明大眼金枪鱼的最佳游泳深度、水温和盐度范围。大眼金枪鱼最高渔获率前3位的深度范围、水温范围和盐度范围分别表示大眼金枪鱼常见的游泳深度范围、水温范围和盐度范围。结果表明，其最适水深为240.00 - 269.99m，最适水温为12.00 - 12.99o，最适盐度为35.00 - 35.09。其常见的游泳深度、水温和盐度范围
SUMMARY The hooked bigeye tuna’s depth was calculated by the catenary curve equation based on the identified hook number of the hooked fish sampled in random from three China tuna longliners operating in the Central Atlantic Ocean high sea area and targeting bigeye tuna from 4 th Jul. 2001 to 27 th Oct. 2001.The temperature and salinity of the hooked fish’s swimming depth was calculated from temperature and salinity vertical profiles measured by the STD guided by the hook depth. From the sample data, bigeye tuna catch rates at different ranges of depth, water temperature and salinity were estimated by the frequency statistic method. The range of depth, water temperature and salinity with the maximum catch rate of bigeye tuna indicated its optimal swimming depth, water temperature and salinity range. The range of depth, water temperature and salinity with the first 3 highest catch rate of bigeye tuna indicated its common swimming depth, water temperature and salinity range respectively. The results indicated that its optimal depth, water temperature and salinity range was 240.00 - 269.99m, 12.00 - 12.99o, 35.00 - 35.09 respectively . Its common swimming depth, water temperature and salinity range