| 年度 |
2008 |
| 計劃名稱 |
三大洋產長鰭鮪資源漁業生物學特徵參數及其評估之研究 (一) |
| 中文摘要 |
(I) 1. 同時未成熟與成熟魚海域，在Venezuela5°~15°N, 45°~65°W及 Bermuda Is.30°~45°N, 45°~75°W。 2. 在5-8月 Sargassum Sea15°~25°N, 40°~65°W成熟魚。 3. 在7-9月間在45°~50°N, 30°~45°W海域，出現成熟與未成熟魚。 (II) GLM CPUE，2000~2003 std.CPUE 相較於nominal CPUE 呈穩定趨勢。 (III) 1999-2007長鰭鮪CPUE無呈現明顯下降，呈持平或略增。 |
| 英文摘要 |
(I)1.Both immature and mature albacore are found in Venezuela5°~15°N, 45°~65°W and Bermuda Is.30°~45°N, 45°~75°W。2.During May to August, mature albacore appear in Sargassum Sea15°~25°N, 40°~65°W.3.In north atlantic ocean 45°~50°N 30°~45°W, the immature and mature albacore are found during July to Sepertember.(II)All of the albacore CPUE trends showed decreasing pattern in recent years in north pacific ocean .(III) The CPUE trend for albacore in south pacific ocean (after identified and separated from the data set) after 1999 was stable or even slightly increased instead of sharply decreased been seen in the mixed data set，the maximum sustainable yield estimated based on both data accordingly also were different，indicating that such an exercise was necessary for avoiding possible errors that could occur in assessment of this stock. |
| 計畫編號 |
97農科-15.1.2-漁-F2(3) |