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

不同濃度的2-phenoxyethanol對石斑苗的麻醉，不論大小型石斑苗，麻醉誘導時間皆隨著濃度增加有下降的趨勢，但麻醉誘導時間下降至濃度700 ppm即達飽和，且與濃度為800ppm之組無顯著差異。在200 ppm時，大小型石斑苗 70% 都無法在30分內達到尾部完全停止擺動。小型石斑苗恢復時間以濃度為300 ppm組的時間較長，且與各濃度組間有顯著差異；大型石斑苗則以濃度為400 ppm組的時間最長。24小時毒性實驗結果發現，小型石斑苗在濃度為100 ppm以上開始死亡，大型石斑苗則在150 ppm以上才有死亡現象發生，兩者的半致死濃度 (LC50) 分別為 185 及 232 ppm。石斑苗暴露於空氣中之死亡以小型石斑苗最嚴重，在空氣中15 分鐘後，死亡率已達 50%，而大型石斑苗暴露 20-30 分鐘之死亡率約30%。

anesthetic induction time of 2-phenoxyethanol to juvenile grouper Epinephelus coioides decreased when the concentration of 2-PE becomes high fromthe range 300 to 700 ppm. The recovery time of small size grouper was thelongest at 300 ppm of 2-PE concentration, and 400 ppm in large size grouper. Wecalculated three application concentrations in juvenile grouper for 2-PEtreated. There included the optimal anesthetic concentration was 400 ppm in bothsize groupers. Twenty-four hour's sedative concentrations was 100 and 150 ppm,and 24 h LC50 were 185 and 232 ppm of small size and large size grouper. Themortality of S-2PE grouper is begin over 50% when directly exposed to air in 15minutes. The large size grouper (L-2PE) all below 30 % in 20-30 minutes airexposed. In each size control grouper, their mortality is all below 10% during30 minutes exposed to air.