2012-02-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/672058摘要：臺灣鮪延繩釣漁業捕獲大目鮪、黃鰭鮪、及太平洋黑鮪的漁獲資料，是標準化資源量指標和資源狀態評估，最重要的資料。然而，多種模式分析顯示，我國鮪延繩釣漁業的大西洋熱帶鮪類指標對資源狀態並無資訊代表性，或過度高估解讀資源現存狀態。故，為配合大西洋鮪類資源保育委員會資源狀態評估時程，確認和發展我國鮪延繩釣漁業該等種類之資源指標，配合其他大西洋漁業國所提資料，已進行資源狀態評估。本年度工作項目包括：大西洋大目鮪資源的資源量指標標準化(即單位努力漁獲量標準化)研究；和太平洋黑鮪資源量指標標準化(即單位努力漁獲量標準化)，體長別及年齡別漁獲量研究。 <br> Abstract: Fishery data of Atlantic tropical and Pacific bluefin tunas by Taiwanese longline fleet are very sustantial for standardizing abundance index used in assessing stock status. However, several analyses have resulted in that those data of Atlantic tropical tunas were not informative, and obtaining an overestimation of standing stock status. Therefore, in order to comply with the schedules of RFMOs` stock assessments, Estimation of abundnace indices to incorporate with other indices provided by other fishing nations in pursuing stock status assessments of tropical tunas are the most important tasks. Thus, two workplans were provided in the project, studies to develop abundance indiex for Atlantic bigeye tuna and for Pacific bluefin tuna, and to develop catch at length and catch at age for Pacific bluefin tuna.