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頁籤選單縮合
題 名 | 金錢魚Scatophagus Argus的初期發育及育苗研究=Studies on the Early Development and Larval Rearing of Spotted Scat Scatophagus Argus |
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作 者 | 張賜玲; 謝介士; | 書刊名 | 水產研究 |
卷 期 | 5:1 1997.06[民86.06] |
頁 次 | 頁41-49 |
分類號 | 439.5 |
關鍵詞 | 金錢魚; 初期發育; 育苗; Scatophagus argus; Early development; Larval rearing; |
語 文 | 中文(Chinese) |
中文摘要 | 金錢魚Spotted scat Scatophagus argus的受精卵為浮性的透明卵,其卵徑介於0.78-0.8 mm,內有單一油球,油球的直徑為0.26 mm,在水溫28-29℃,約20小時後開始孵化,29-31℃約16小時後開始孵化,孵化稍後,軀幹伸直時,仔魚的全長為1.8 mm,孵化後48小時,仔魚之全長為2.6mm,開始投餵牡蠣受精卵及輪蟲,第9日齡開始投餵剛孵化的豐年蝦幼蟲,至第18日齡後兼投少量橈足類,第24日齡時,最大的仔魚全長達13 mm,軀幹呈深黑色,第27日齡時,較大的魚苗開始有攝食團狀鰻飼料的行為, 顯示嗅覺神經已經形成,1月齡的金錢魚苗之平均全長及平均體重分別為12.6 ±2.8mm及0.093 ± 0.06g,此階段的魚苗與野生苗的外觀相似。 |
英文摘要 | The fertilized eggs of spotted scat Scatophagus argus are buoyant and semi-transparent. The egg diameter range from 0.78-0.8 mm. The eggs contain a single oil globule having a diameter of 0.26 mm. The larvae hatched at 20 or 16 hours after fertilization at water temperature of 28-29℃ and 29-31℃, respectively. The total length of the newly-hatched and the 48 hours old larvae are 1.8 and 2.6 mm, respectively. The oyster Crassostrea gigas embryos and rotifers Brachionus plicatilis were given to the larvae at the first day of feeding, and then Artemia nauplii after the ninth day and copepod after the eighteenth day. Larvae of 24 days old reached 13 mm in total length and showed a deep black color in appearance. The bigger larvae started to feed on the dough of eel feed at 27 days old. It means that the olfactory nerves were functioning. One-month old fry were measured to have a mean total length of 12.6 ± 2.8 mm and a mean body weight of 0.093 ± 0.06g. They looked similar in morphology with the wild fry of same sizes. |
本系統中英文摘要資訊取自各篇刊載內容。