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白鰻誘導繁殖試驗

  • 出版日期:82-06-01
  • 標題title(英):
    Induced Breeding of Japanese Eels, Anguilla japonica
  • 作者:余廷基, 蔡中利, 蔡永舜, 賴仲義
  • 作者auther(英): Yu, T. C., C. L. Tsai, Y. S. Tsai and J. Y. Lai
  • 卷別:1
  • 期別:1
  • 頁碼:27-34

雌鰻以人工合成荷爾蒙注射催熟,於6 針次左右達性成熟後,再依原注射量加倍之 劑量催生 (誘導產卵) ,10小時後可自行產卵或人工採卵。受精卵在水溫19.5℃、鹽度 35 ppt環境下,約經48 h孵出仔鰻。孵出之仔鰻全長為2.89 mm,軀體稍呈彎曲,1日後 全長為2.94 mm,4 日後全長為5.24 mm並發生大量死亡。12日後全長為7.82 mm,顎齒 向外突出。17日後全長為11.12 mm,顎齒萎縮並發生死亡。25日後全長為19.2 mm,仔 鰻全部死亡。

摘要abstract(英)


Japanese eel (Anguilla japonica) were treated with mixed gonadotropin. The female reached mature stage after the sixth injection. Ten hours after another injection with double dosage, some female spawned spontaneously or were stripped successfully. Under 19.5℃ and 35 ppt, the fertilized eggs hatched after about 48 hours. Average total length of newly hatched fry was 2.89 mm with body slightly bent. The total length of one day old fry increased to 2.94 mm. On the fourth day, the average total length of fry was 5.24 mm and mass mortality was occurred. The total length of the 12-day old fry reached 7.82 mm with jaw teeth extruded. Average total length of 17-day old fry was 11.12 mm with atrophy of jaw teeth. High mortality occurred again. All fry died after 25 days. The total length was 19.2 mm.