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

1、本試驗探討以人類絨毛膜促性腺激素及促黃體激素釋放激素誘導黃高鰭刺尾鯛產 卵。注射劑量為1000 IU/尾及LHRH-A50 μg/尾注射後約50小時左右開始產卵黃高鰭刺尾鯛卵呈浮性之透明卵，其卵徑為 0.70 ± 0.06 mm，內含一顆油球，油球直徑為0.17 ± 0.01 mm。2、綜合一年之研究結果發現，黃高鰭刺尾鯛親魚之培育應從餌料、水質及養殖管理改進。根據試驗結果發現，綜合投餵組之平均增重率最高為77.08%，較單獨投餵飼料組，其增重率約可提高20%，也較單獨投餵石蓴組增重率提高50%以上，綜合投餵組與其他二組間之增重率有顯著差異存在。3、油彩臘膜蝦初期蝦苗在24℃及21℃的環境下活存率較佳，蝦苗孵化後約40天變態為後期蝦苗，變態後3-7天開始試攝食海星，最小成熟體形的體長為26.25㎜，頭胸甲長為7.15㎜產卵438顆。油彩臘膜蝦的產卵量介於438-4659顆，產卵數量與頭胸甲呈正相關。

This study investigated the efficacy of induced spawning in Yellow tang Zebrasoma flavescens by injection of HCG and LHRH-a. Injected dosages of 1000 IU and 50 μg were, ovulation occurred about 50 h after injection. The eggs of Yellow tang amyo buoyant and semi-transparent.　The egg diameter range from 0.70 ± 0.06 mm . The eggs contain a single oil globule having a diameter of 0.17 ± 0.01 mm. With one years of research, we found that successful culture of yellow tail can be improved by focusing of feedings, water quality and culture management. According to our research, the highest average gain weight rate for the one fed with mixed regime(including Ulva lactuca and artificial feed) was 77.08%, 20% higher than the one fed with artificial feed only, 50% higher than those fed with Ulva lactuca. The was a significant difference in average gain weight rate between the one fed with mixregime and the other two fed with different regime.The survival rate was the highest for the primary larval （Hymenocera picta）when raised at 24-21℃. The larval through 40 days metamorphosed into the postlarvae stage after hatched. The minimum mature size BL：26.35㎜, CL：7.15㎜. The number of eggs of ovigerous female varied from 438 to 4,659.