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Assessment of South Pacific albacore stock (Thunnus alalunga) by improved Schaefer model

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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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Authors and Affiliations

  1. Division of Marine Biology and Fishery, Institute of Oceanography, National Taiwan University, 106, Taipei, Taiwan, China

    Wang Chien-Hsiung

  2. Institute of Marine Resource Management, College of Life and Resource Sciences, National Taiwan Ocean University, 20224, Keelung, Taiwan, China

    Wang Shyh-Bin

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  1. Wang Chien-Hsiung
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  2. Wang Shyh-Bin
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Correspondence to Wang Chien-Hsiung.

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Chien-Hsiung, W., Shyh-Bin, W. Assessment of South Pacific albacore stock (Thunnus alalunga) by improved Schaefer model. J. Ocean Univ. China 5, 106–114 (2006). https://doi.org/10.1007/BF02919207

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  • DOI: https://doi.org/10.1007/BF02919207

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