温度对吉富罗非鱼呼吸的影响  

Effects of temperature on the respiration of GIFT strain of Nile tilapia (Oreochromis niloticus)

作　　者：李利[1] 江敏[1,2] 马允 李晓琴 

机构地区：[1]上海海洋大学农业部水产种质资源与养殖生态重点开放试验室,上海201306 [2]水域环境生态上海高校工程研究中心,上海201306 [3]新疆奔腾生物技术有限公司,新疆乌鲁木齐830016

出　　处：《上海海洋大学学报》2010年第6期763-767,共5页Journal of Shanghai Ocean University

基　　金：国家科技支撑计划项目(2006BAD30B07);上海市教委重点学科建设项目(J50701)

摘　　要：在10-30℃条件下,测定呼吸室内吉富罗非鱼(Oreochromis niloticus,GIFT)呼吸频率、水体溶解氧、pH、游离二氧化碳以及氨氮的变化。结果表明,吉富罗非鱼耗氧率(Ycr)和排氨率(Ran)随着温度(t)的升高而增大,线性回归方程分别为Ycr=0.0038t2-0.0023t+0.0312(R2=0.9549),及Ran=0.0009t2-0.0027t+0.0037(R2=0.9475);氨熵(Qa)为0.065-0.099(<0.33),蛋白质供能比为5%～30%,表明吉富罗非鱼主要由脂肪和碳水化合物供能。当温度在15～30℃时,随着温度的降低,二氧化碳排放率从0.0684mg/(g·h)下降至0.0114mg/(g·h)。出水pH明显低于进水pH,且进出水口pH的降低幅度随温度升高而增大。试验期间,10～30℃的呼吸商(Qr)为0.55±0.10(<1),吉富罗非鱼主要进行有氧呼吸。Experiments were conducted and the respiratory rate of the GIFT strain of Nile tilapia（Oreochromis niloticus） ,DO,pH,carbon dioxide and ammonia in water were analyzed to evaluate the effects of temperature from 10-30 ℃ on the respiration of experimental fish.The results indicated that the oxygen consumption rate （Ycr） and the ammonia excretion rate （Ran） of GIFT increased with water temperature （t） ,and the regression equations were Ycr = 0.003 8 t2-0.002 3 t ＋ 0.031 2（R2 = 0.954 9） and Ran = 0.000 9 t2-0.002 7 t ＋ 0.003 7（R^2 = 0.947 5） respectively;The ammonia quotient（Qa） was 0.016-0.099（ 0.33） ,and the proportion of protein as energy supply was 5 %-30 % ,which indicated that the energy consumption of GIFT was mainly offered by fat and carbohydrate.The carbon dioxide excretion rate declined from 0.068 4 to 0.011 4 mg /（g·h） with the temperature decreasing from 30 ℃ to 15 ℃ .pH in effluent was lower significantly than that in influent while the reduction increased with the rising of the temperature.The respiratory quotient（Qr） of GIFT was 0.55 ± 0.10 （ 1） ,which indicated that aerobic respiration was the main respiration style of GIFT.

关 键 词：吉富罗非鱼 温度 呼吸 溶解氧 耗氧率 排氨率 

分 类 号：S912[农业科学—水产科学]