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| 題 名 | 鬼頭刀(Coryphaena hippurus)初期發育與育苗研究=Studies on the Early Embryonic Development and Larval Rearing of the Common Dolphinfish (Coryphaena hippurus) |
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| 作 者 | 鄭明忠; 江玉瑛; 吳瑞賢; 邱俊豪; 何源興; 許嘉閔; | 書刊名 | 水產研究 |
| 卷 期 | 31:2 2023.12[民112.12] |
| 頁 次 | 頁25-35 |
| 分類號 | 438.661 |
| 關鍵詞 | 鬼頭刀; 生殖行為; 初期發育; 育苗; Coryphaena hippurus; Spawning behavior; Early development; Larval rearing; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 鬼頭刀 (Coryphaena hippurus) 為全球重要的漁獲種類,因過度捕撈已導致漁獲量減少和個體小 型化。本研究初步建立鬼頭刀初期發育及育苗技術,可作為增裕漁業資源之基礎並提供產業量產種苗 之應用。鬼頭刀受精卵為外觀透明之浮性卵,平均卵徑為 1.55 ± 0.04 mm (mean ± SD),內具平均直徑 為 0.31 ± 0.02 mm 之單一油球。在水溫 26 ± 1℃、鹽度 32 psu 下,受精卵約 48 hr 20 min 孵化,剛孵 化之仔魚平均全長為 5.07 ± 0.05 mm,3 日齡魚平均全長為 5.46 ± 0.12 mm,可投餵 100–120 μm 的 輪蟲作為初期開口餌料。第 6 日齡魚全長為 5.81 ± 0.62 mm,活動力增強可兼投橈足類幼生,第 10 日 齡魚平均全長為 6.63 ± 0.60 mm,攝食能力增強,可混合投餵橈足類成蟲,需注意各種餌料必須重疊 使用。第 30 日仔魚平均全長為 33.00 ± 2.44 mm,已可完全接受人工配合飼料。第 45 日齡魚平均全長為 50.70 ± 5.02 mm,體色及斑紋已與成魚一致。 |
| 英文摘要 | The common dolphinfish (Coryphaena hippurus) holds global significance, but its fishery has faced a decline in size and yield due to overfishing. This study aims to establish early-stage development and seedling cultivation techniques, providing a foundation for enhancing fishery resources and supporting industrial seedling production. The fertilized eggs of the common dolphinfish are buoyant and semi-transparent, with an average diameter of 1.55 ± 0.04 mm, containing a single oil globule with an average diameter of 0.31 ± 0.02 mm. Hatching occurs around 48 hours and 20 minutes after fertilization at a water temperature of 26 ± 1°C and a salinity of 32 psu. The median length of the newly-hatched larvae is 5.07 ± 0.05 mm. On the 3rd day posthatching (DPH), their length increases to 5.46 ± 0.12 mm begin feeding on small rotifers, specifically Brachionus plicatilis. On the 6th DPH, the larvae reach an average total length of 5.81 ± 0.62 mm, showing increased mobility, and copepod nauplii can be introduced. By the 10th DPH, the larvae achieve an average length of 6.63 ± 0.60 mm, with enhanced feeding capabilities, allowing for mixed feeding of copepod adults. It's essential to ensure overlapping use of various feeds. On the 30th DPH, the juvenile fish have an average total length of 33.00 ± 2.44 mm and can fully accept artificial formulated feed. The pattern of bands and colors of the juveniles on the 45th DPH (50.70 ± 5.02 mm) is consistent with that of the adults. |
本系統中英文摘要資訊取自各篇刊載內容。