| Assessment of South Pacific Albacore Stock （Thunnus alalunga ） by Improved Schaefer Model |
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| 作者姓名： | Wang Chien-Hsiung Wang Shyh-Bin |
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| 作者单位： | [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 |
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| 摘 要： | Based on catch and effort data of tuna longline fishery operating in the South Pacific Ocean, the South Pacific al-bacore stock was assessed by an improved Schaefer model. The results revealed that the intrinsic growth rate was about 1.28374 and carrying capacities vareied in the range from 73734 to 266732 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.
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| 关 键 词： | 青花鱼 动力学 太平洋 生物多样性 |
| 收稿时间： | 2005-04-15 |
| 修稿时间： | 2005-11-14 |
Assessment of South Pacific albacore stock (Thunnus alalunga) by improved Schaefer model |
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| Wang Chien-Hsiung Wang Shyh-Bin.Assessment of South Pacific albacore stock (Thunnus alalunga) by improved Schaefer model[J].Journal of Ocean University of China,2006,5(2):106-114. |
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| Authors: | Wang Chien-Hsiung Wang Shyh-Bin |
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| Institution: | 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 |
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| Abstract: | 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. |
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| Keywords: | improved Schaefer model stock dynamics albacore |
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