| 卵形鲳鲹消化酶活性的研究Ⅱ盐度和昼夜变化对幼鱼消化酶活性的影响 |
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| 引用本文： | 罗奇,区又君,李加儿,范春燕.卵形鲳鲹消化酶活性的研究Ⅱ盐度和昼夜变化对幼鱼消化酶活性的影响[J].海洋渔业,2010,32(1):54-58. |
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| 作者姓名： | 罗奇 区又君 李加儿 范春燕 |
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| 作者单位： | 1. 中国水产科学研究院南海水产研究所,广州,510300;上海海洋大学水产与生命学院,上海,201306
2. 中国水产科学研究院南海水产研究所,广州,510300 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金项目(2008YD02) |
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| 摘 要： | 研究了盐度对卵形鲳鲹幼鱼主要消化酶(蛋白酶、淀粉酶、脂肪酶)的影响及其消化酶活性的昼夜变化。实验设计了6个盐度梯度组,分别为10、15、20、25、30、35。结果表明:(1)淀粉酶、脂肪酶活性在盐度25时最高,而蛋白酶活性在盐度30时最高。3种消化酶酶活性的平均值在盐度20~30时要明显高于盐度10~15时(P<0.05)。(2)对卵形鲳鲹幼鱼消化酶活性昼夜变化的测定表明,蛋白酶、淀粉酶、脂肪酶活性的最高值分别在20∶00、8∶00和14∶00,最低值分别在2∶00、17∶00和11∶00。
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| 关 键 词： | 卵形鲳鲹 幼鱼 消化酶 盐度 昼夜变化 |
Study on digestive enzyme activity of Trachinotus ovatus Ⅱ Effects of salinity and diurnal variation on digestive enzyme activity in juveniles |
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| LUO Qi,OU You-jun,LI Jia-er,FAN Chun-yan.Study on digestive enzyme activity of Trachinotus ovatus Ⅱ Effects of salinity and diurnal variation on digestive enzyme activity in juveniles[J].Marine Fisheries,2010,32(1):54-58. |
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| Authors: | LUO Qi OU You-jun LI Jia-er FAN Chun-yan |
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| Institution: | 1.South China Sea Fisheries Research Institute;Chinese Academy of Fishery Sciences;Guangzhou 510300;China;2.College of Fisheries and Life Science;Shanghai Ocean University;Shanghai 201306;China |
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| Abstract: | Effects of salinity and diurnal variation on digestive enzyme activity in juvenile Trachinotus ovatus with the body weight of 0.82±0.15 g were studied. The Trachinotus ovatus was stocked in six different salinities (10, 15, 20, 25, 30 and 35). The results indicated :(1) The activity of amylase and lipase was highest in salinity 25,but the activity of protease was highest in salinity 30. The average digestive enzyme activity in salinity 20, 25 and 30 was much higher than that in salinity 10 and 15.(2) The study on the diurnal variation of digestive enzyme activity of Trachinotus ovatus showed that the highest activity of protease, amylase and lipase appeared at 20∶ 00, 8∶ 00 and 14∶ 00, respectively, while the lowest activity of protease, amylase and lipase appeared at 2∶ 00, 17∶ 00 and 11∶ 00, respectively. |
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| Keywords: | Trachinotus ovatus juvenile digestive enzymes salinity diurnal variation |
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