作　　者： ; ; ;

机构地区： 中国水产科学研究院南海水产研究所

出　　处： 《海洋水产研究》 2006年第1期40-45,共6页

摘　　要： 研究了盐度对黄鳍鲷幼鱼主要消化酶（蛋白酶、淀粉酶、脂肪酶）的影响及消化酶活性的昼夜变化。实验设计5、10、15、20、25、30等6个盐度梯度组。结果表明，蛋白酶、脂肪酶的比活在盐度为25时最高，而淀粉酶的比活在盐度为20时最高。各种消化酶在盐度20～30时消化酶比活的平均值要明显高于5～15时消化酶的平均值。对黄鳍鲷消化酶比活昼夜变化的测定表明，蛋白酶、淀粉酶、脂肪酶比活的最高值分别在14：00、20：00和18：00，最低值分别是12：00、10：00和6：00。 Studies were conducted on the effect of salinity on digestive enzyme activity and the diurnal variation of digestive enzyme activity of young yellowfin black porgy （Sparus Latus）. The yellowfin black porgy was cultured at six different salinity（5,10,15,20,25,30）. Test results indicated that the activities of protease and lipase were the highest when the salinity was 25 ,but the activity of a-amylase was the highest when the salinity was 20. The average digestive enzyme activity at the salinity of 20,25 and 30 was much higher than that at the salinity of 5,10 and 15. The study on the diurnal variation of digestive enzyme activity of yellowfin black porgy showed that the highest activities of protease,α-amylase and lipase appeared at 14 ： 00,20 ： 00 and 18 ： 00, respectively, while the lowest activities of protease,α-amylase and lipase appeared at 12 ： 00,10 ： 00 and 6 ： 00,repectively.

关 键 词： 黄鳍鲷 幼鱼 消化酶 比活 盐度 昼夜变化

领　　域： [生物学] [生物学]