不同规格及不同盐度下毛蚶稚贝耗氧率和排氨率的研究  

Study on size and salinity related oxygen consumption and ammonia excretion of Scapharca subcrenata spat

作　　者：沈伟良[1] 尤仲杰[1] 施祥元 

机构地区：[1]宁波大学生命科学与生物工程学院,315211 [2]宁波市海洋与渔业研究院,315211

出　　处：《海洋水产研究》2008年第2期53-56,共4页Marine Fisheries Research

基　　金：宁波市科技局项目(2005C100032)资助

摘　　要：研究了毛蚶稚贝不同规格及不同盐度下的呼吸和排氨率。结果表明,耗氧率随着盐度的升高而升高,当盐度达到30后开始下降。排氨率也表现出相似的规律,在盐度27后开始下降。同时,O∶N值也随着盐度的升高而升高,在盐度30后开始下降。而中等规格(2·41±0·20mm)稚贝的耗氧率和排氨率要高于其余两种规格稚贝,使得规格和耗氧率及排氨率并不形成完全的负相关。The oxygen consumption and ammonia excretion rates of juvenile Scapharca subcrenata at different sizes and different salinities were studied. It was shown that oxygen consumption rate increased with the raise of salinity, and then started decreasing when salinity reached 30. Ammonia excretion rate showed similar trend of variation, and the turning point was at a salinity of 27. At the same time, the ratio of O： N also increased with the raise of salinity, and started declining at 30. Oxygen consumption and ammonia excretion rates of medium sized juvenile clams were higher than those of other size groups, resulting in only partial negative correlations between oxygen consumption or ammonia excretion rates and clam size.

关 键 词：毛蚶 稚贝 规格 盐度 耗氧率 排氨率 

分 类 号：S948[农业科学—水产养殖] TS254.7[农业科学—水产科学]