Assessment of South Pacific Albacore Stock (Thunnus alalunga) by Improved Schaefer Model  

作　　者：Wang Chien-Hsiung Wang Shyh-Bin 

机构地区：[1]Division of Marine Biology and Fishery Institute of Oceanography,National Taiwan University,Taipei 106,Taiwan,China [2]Institute of Marine Resource Management College of Life and Resource Sciences,National Taiwan Ocean University,Keelung 20224,Taiwan,China

出　　处：《Journal of Ocean University of China》2006年第2期106-114,共9页中国海洋大学学报（英文版）

摘　　要：Based on catch and effort data of tuna longline fishery operating in the South Pacific Ocean, the South Pacific albacore stock was assessed by an improved Schaefer model. The results revealed that the intrinsic growth rate was about 1.283 74 and carrying capacities vareied in the range from 73 734 to 266 732 metric tons. The growth ability of this species is remarkable. Stock dynamics mainly depends on environmental conditions. The stock is still in good condition. However, the continuous decreasing of biomass in recent years should be noticed.基于钩子和金枪鱼多钩长线渔业在南方太平洋操作的努力数据，南方太平洋青花鱼科的海产鱼股票被一个改进 Schaefer 模型估计。结果表明内在的生长率是大约 1.28374 并且从 73734 ～ 266732 公吨在范围带 capacitiesvareied。这种的生长能力是显著的。股票动力学主要取决于环境条件。股票仍然处于好状况。然而，在最近的年里的生物资源的连续减少应该被注意。

关 键 词：improved Schaefer model stock dynamics ALBACORE 

分 类 号：S932.4[农业科学—渔业资源]