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

本報告在探討當龍鬚菜累積銅時，取之投餵九孔，其對九孔體內之蓄積與排出情形。培育龍鬚菜之銅濃度分別為0.05、0.10、0.20、0.30與 0.40 mg/l 組以及對照組等共六組。九孔飼餵含銅之龍鬚菜的吸收含量試驗共80天，而九孔對銅之釋放試驗共60天。經試驗結果得悉龍鬚菜對銅之吸收含量隨添加濃度與時間之增加而升高。九孔飼餵培育在銅濃度0.1mg/l以下之龍鬚菜其對銅之吸收含量不隨時間增加而持續上升，但是0.2 mg/l以上各組則明顯增加。九孔飼餵含銅之龍鬚菜，不隨龍鬚菜累積銅量之增多而持續升高，其動態平衡點在銅濃度0.4 mg/l，吸收時間60天。九孔內臟對銅之吸收累積量比腹足部多。九孔經再投餵未處理龍鬚菜 60天後，其對銅之釋放量與時間有顯著相關性，隨時間增長，保有率愈少。

The objective of this study was to determine the copper accumulation andelimination of Haliotis diversicolor supertexta fed with copper contaminated seaweed Gracilaria verrucosa. The sea weed was cultured in the copper solution at0, 0.05, 0.10, 0.20, 0.30 and 0.40 mg/l. The amounts of copper accumulated inGracilaria increased proportionaly with concentration and time. At theconcentrations of 0.2mg/l and above the amounts of accumulation of copper in theabalone increased proportionaly with time, but it was not so at theconcentrations at and under 0.1mg/l. The abalone fed with Gracilaria containingcopper, the accumulation didn't increase with copper concentration inGracilaria. The equilibrium of copper contents was at 0.4mg/l for the period of60 days. The amounts of accumulation of copper in viscera were higher than feetin the abalone. After the 80 days feeding experiment with copper contaminatedGracilaria, the abalone then fed with copper free Gracilaria for 60 days, copperconcentration decreased with time.