農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

持續進行延繩釣漁獲試驗及鮪類仔稚魚調查，並由CTD、ADCP所記錄各水層海流流向及溫鹽變化解析鮪類的來游行進路線、棲息水深，以了解及蒐集鮪類地理分布與海洋環境資訊，並於魚市場蒐集相關漁獲組成及進行鮪類體長測定，並將所蒐集資訊建立資料庫太平洋黑鮪每年四月至七月間，洄游至我國東部海域，成為我國近海鮪延繩釣漁業最重要的漁獲魚種。經由鮪仔稚魚分布調查可瞭解其產卵場；經由表水溫衛星影像解析配合標本船作業資訊與試驗船現場進行的漁獲試驗與海洋觀測將可瞭解黑鮪洄游路徑變動（漁場）與海洋環境關係，可提供漁民作業參考。

Tuna resource is abundant in central-western Pacific Ocean. Moreover, the easternwaters off Taiwan are noted as the migrating route and potential spawning grounds forPacific bluefin tuna. The aims of this study are (1) analyzing the historic catch statistics ofTaiwan's offshore longline fishery by the geographic information system (GIS) softwareto understand the spatial and temporal transitions characteristics of this fishery; (2)determining the possible key factors for the formation mechanism of the tuna's fishingground either by analyzing catch information obtained from the R/V and/or fishingvessels; or by the satellite surface temperature images and CTD information in situ.