- 期刊
- OpenAccess
On the Dynamics of Albacore Population in the Indian Ocean
印度洋長鰭鮪的族群動態
摘要
長鰭鮪曾是臺灣鮪漁業的第一標的，產自印度洋者約佔全國總產量的25-35%。目前，依據漁獲統計和族群動態的科學研究結果，印度洋鮪類委員會主司印度洋長鰭鮪族群的評估和管理。印度洋長鰭鮪族群被研究已超過三十餘年，其間，獲得了一些結果，然而也留下不少的不確定性，以待來年研究。本文企圖來發現一些重要的課題和建議適合的方法，作科學評估和使本族群能有生物性的永續。印度洋長鰭鮪自1950年代起開始被開發，其間，有兩度出現較大的漁獲量，即1986-1991年的流刺網漁業和1998年以後的漁撈。在這長期的漁業開發中，日本和臺灣的科學做了許多有關的生物學和族群動態學研究。同時，估計出族群的最大持續生產量和族群被評估為健康的完全開發族群。責任制漁業的驅使本系群的使用者，必須準確地蒐集漁業資料和加入科學研究，尤其是，應用不同的年齡群化分析法來進一步評估系群和管理本系群。
並列摘要
Albacore has ever been the first target of Taiwan tuna fishery and about 25-35% of total albacore production is made from the Indian Ocean. Up-to-date, based on the catch statistics and scientific population studies, the Indian Ocean albacore population is assessed and managed by Indian Ocean Tuna Commission. The Indian Ocean albacore population studies have been elapsed over three decades and a number of results have been obtained, however, also a lot of uncertainties have remained in future study. This attempt is to find the topics of importance and to suggest some appropriate approaches to assess scientifically and to ensure biologically sustainability of the Indian Ocean albacore stock. The Indian Ocean albacore stock has been exploited since 1950s and appeared in a heavy exploitation status in two periods, 1986-1991 by gillnet fishery and 1998 afterward by longline fishing. During the long period exploitation, Japanese and Taiwanese scientists have been working on biological and population dynamics studies. Meanwhile the maximum sustainable yield was estimated and its healthy full-exploited status was prospected. The responsible fishery motivates stock users to collect catch data accurately and join the scientific researches, particularly in using various age-structured population models to evaluate and manage the stock in advance.