异育银鲫氨氮排泄与耗氧的研究  

Research on ammonia excretion and oxygen consumption in allogynogenetic sliver crucian carp

作　　者：江敏[1] 黄宗群[1] 彭自然[1] 安世杰[1] 罗春芳[1] 

机构地区：[1]上海水产大学生命科学与技术学院,上海200090

出　　处：《上海水产大学学报》2007年第1期28-32,共5页Journal of Shanghai Fisheries University

基　　金：上海市教委理科一般项目资助(04KB09);上海水产大学校长基金项目资助(科04-91);上海市重点学科建设项目资助(Y1101)

摘　　要：采用静态试验法对异育银鲫的氨氮排泄与耗氧进行了研究，结果表明：体重4．51—13．05g的异育银鲫，其单位体重排氨率为0．0269—0．0156mgN／（g·h）；溶氧的死亡临界值为0．56—0．25mg／L，窒息点为0．21—0．08mg／L。异育银鲫的呼吸属顺应型，瞬时耗氧速率与溶氧呈线性正相关，溶氧越低，瞬时耗氧速率越小；瞬时耗氧速率随体重的增加而减少；排氨率与体重呈良好的幂函数，其中单位个体排氨率随体重增大而增大，而单位体重排氨率却随体重增大而减小。Ammonia excretion and oxygen consumption of allogynogenetic sliver crucian carp were studied through static state tests. The results were as follows： ammonia excretion rates in allogynogenetic sliver crucian carp were from 0. 026 9 to 0. 015 6 mgN/（g · h） when the fish weighed from 4.51 to 13.05 g per individual. Critical values and asphyxiating points of dissolved oxygen on allogynogenetic sliver crucian carp were 0.56 -0.25 and 0.21 - 0.08 mg/L respectively. Instantaneous rate of oxygen consumption and dissolved oxygen was positive correlation. The lower dissolved oxygen was, the lower instantaneous rate would be. Instantaneous rate of oxygen consumption would decrease if the weight increased. It was found that the relationship between ammonia excretion rate and weight followed an exponential function law.

关 键 词：异育银鲫 排氨率 瞬时耗氧速率 窒息点 

分 类 号：S912[农业科学—水产科学]