饥饿和再投喂对白斑狗鱼体内RNA/DNA比值影响的研究  

Study on the effect of starvation and refeeding of RNA/DNA ratio in Esox lucius

作　　者：杨天燕[1] 杜劲松[1] 孟玮[1] 刘立志[1] 

机构地区：[1]新疆维吾尔自治区水产科学研究所,新疆乌鲁木齐830000

出　　处：《水产学杂志》2009年第3期43-46,共4页Chinese Journal of Fisheries

基　　金：国家科技部农业科技成果转化资金项目(No.2007GB2G400348)

摘　　要：研究了饥饿和再投喂过程中白斑狗鱼肝脏和肌肉RNA/DNA比值的变化。随着饥饿时间的延长,白斑狗鱼体内RNA/DNA比值不断下降,体重逐渐减小,饥饿56d时RNA/DNA比值下降幅度达到最大。恢复投喂后,白斑狗鱼摄食强度明显增大,生长加快,各组试验中肝脏和肌肉RNA/DNA比值均超过正常投喂水平。试验结果表明RNA/DNA比值与体重变化呈正相关,进一步证明RNA/DNA比值可作为衡量鱼类生长的重要指标之一。Effects of starvation and refeeding of RNA/DNA ratio in liver and muscle in Esox lucius were determined.The body weight and ratio of RNA/DNA of E.lucius continuously decreased with the increasing of starvation period, and the RNA/DNA ratio was the lowest when deprived of food for 56 days.After refeeding, the feeding intensity and growth rate became obviously higher, and the RNA/DNA ratios in liver and muscle of all the starved groups were higher than normal feeding group.The experimental results showed that RNA/DNA ratio and body weight was positively correlated, and was one of the important index reflecting the growth of fishes.

关 键 词：白斑狗鱼 饥饿 再投喂 RNA/DNA比值 

分 类 号：S96[农业科学—水产养殖]