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

本計畫之目的是為研究藍刻齒雀鯛（Sapphire devil, Chrysiptera cyanea）在人工環境下之生殖行為、育苗及其他相關問題，以期開發藍刻齒雀鯛種苗之人工繁殖技術，以減少漁民捕捉野生海水觀賞魚對野外捕捉的依賴。根據研究發現，藍刻齒雀鯛受精卵顏色為透明及淡黃色之間，其實是反映卵黃之顏色所致，呈橢圓形、分離之沉性黏著卵，偏動物極之頂端具有棉絮狀之附著絲，其功用在使卵粒黏附於產卵床上。受精卵之平均長徑為1.188±0.032 mm；平均短徑為0.596±0.012 mm；仔魚孵化平均體長為2.80±0.2 mm。根據結果藍刻齒雀鯛胚胎孵化所需的時間與水溫成負相關變化，在鹽度對胚胎影響下發現20 psu下孵化率最佳為97.5% (P<0.05)。結果顯示，胚體期後期胚胎比胚體期前期之受精卵對鹽度變化有較強的耐受性之趨勢。

The purpose of this study is aimed to understand the reproductive behavior, larval culture under artificial environment of Sapphire devil, Chrysiptera cyanea and other relevant materials. Besides, we hope the result of the study can reduce the trade of wild fish in the ornamental fish market in the future. These adhesive demersal eggs are crystalloid to lemon yellow, and were about 1.188±0.032 mm in length and 0.596±0.012 mm in width, and the newly hatched larvae were about 2.80 mm. According to the results, the time interval for the embryo to hatch is in inverse ratio to water temperature. The better hatching rate form 20 psu (97.5%) significantly (P<0.05). The results showed that the late stage of embryonic embryos perform a tendency of more tolerant to the changes of salinity than the early stage of embryonic embryos.