Effects of Temperature on Color Metamorphosis and Growth Performance of Hybrid Ornamental Fish, Blood Parrotfish (Cichlasoma citrinellum × Cichlasoma synspilum)

溫度對雜交觀賞魚血鸚鵡(Cichlasoma citrinellum × Cichlasoma synspilum)退黑色及成長的影響

劉俊宏(Chun-Hung Liu) ； 李濟臺(Chi-Tai Lee) ； 徐雅麗(Ya-Li Shiu) ； 鄭文騰(Winton Cheng) ； 葉信平(Shinn-Pyng Yeh)

《臺灣水產學會刊》 37卷4期 (2010/12) Pp. 263-271

https://doi.org/10.29822/JFST.201012.0004

摘要

本研究係探討在不同溫度［包括18℃、不控溫條件(24.4-28.7℃)及32℃］下飼養84天後，雜交觀賞魚血鸚鵡(Cichlasoma citrinellum × Cichlasoma synspilum)退黑色、成長表現、攝食、收成量及活存率的變化。結果顯示血鸚鵡飼養在32℃條件下，其成長明顯較18℃及不控溫條件下飼養的血鸚鵡好，這主要是因為高溫條件下，血鸚鵡攝食量較大，且飼料轉換率明顯降低的關係。此外，18℃的飼養條件下84天，會造成血鸚鵡無明顯成長及沒有魚隻退黑色。因此，本研究建議血鸚鵡最好的飼養溫度為32℃。

關鍵字

血鸚鵡 ； 觀賞魚 ； 水溫 ； 退黑色 ； 成長

並列摘要

The color metamorphosis, growth performance, food intake, total harvest weight and survival rate of a juvenile hybrid ornamental fish, blood parrotfish fish (Cichlasoma citrinellum × Cichlasoma synspilum) was studied at three different temperature, 18oC, the temperature of natural variation (24.4-28.7℃) and 32℃ for 84 days, respectively. The results showed that growth rate of blood parrotfish reared at 32℃ was significant higher than that of blood parrotfish reared fish at 18℃ and natural temperature variation, resulted from the increase of food intake accompanying a decrease of feed conversion ratio. In addition, an adverse temperature of 18℃ results in an insignificant growth and no color metamorphosis in blood parrotfish during 84 days of culture. Results of the present study strongly suggested that better rearing temperature of blood parrotfish is 32℃.

並列關鍵字

Blood parrotfish ； Ornamental fish ； Water temperature ； Color metamorphosis ； Growth performance