| Development Study on Some Digestive Enzymes of Takifugu rubripes Larvae and Juvenile |
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| 作者姓名： | WANZhenzhen GAOTianxiang ZHANGXiumei CHENChao |
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| 作者单位： | [1]KeyLaboratoryofMariculture,MinistryofEducation,OceanUniversityofChina,Qingdao266003,P.R.China [2]YellowSeaFisheriesResearchInstitute,ChineseAcademyofFisherySciences,Qingdao266071,P.R.China |
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| 基金项目： | 引进国际先进农业科技计划(948计划) |
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| 摘 要： | The activities of some digestive enzymes are studied for Takifugu rubripes larvae and juvenile from the first feeding to 27 d after hatching at selected stages of development. The homogenate of whole larvae body is used for enzymatic determination. Activity of acid protease decreases notably during the beginning days after the commencement of completely exogenous feeding and the days before the beginning of the juvenile stage. Alkaline protease specific activity also decreases at metamorphosis, The activities are associated with the morphology of the developing digestive tract. Amylase activity increases before the first feeding, followed by a decreasing and then a rather constant level. Lipase activity remains low during the larvae and juvenile periods. Alkaline phosphatase activity increases gradually. This reflects the development of brush border membranes of enterocytes.
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| 关 键 词： | 幼虫状态 成熟状态 消化酶 吹气鱼 中国海域 |
Development Study on Some Digestive Enzymes of Takifugu rubripes Larvae and Juvenile |
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| WANZhenzhen GAOTianxiang ZHANGXiumei CHENChao.Development Study on Some Digestive Enzymes of Takifugu rubripes Larvae and Juvenile[J].Journal of Ocean University of China,2004,3(2):175-178. |
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| Authors: | Wan Zhenzhen GAO Tianxiang ZHANG Xiumei CHEN Chao |
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| Institution: | 1. Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, P.R.China
2. Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, P.R.China |
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| Abstract: | The activities of some digestive enzymes are studied for Takifugu rubripes larvae and juvenile from the first feeding to 27 d after hatching at selected stages of development. The homogenate of whole larvae body is used for enzymatic determination. Activity of acid protease decreases notably during the beginning days after the commencement of completely exogenous feeding and the days before the beginning of the juvenile stage. Alkaline protease specific activity also decreases at metamorphosis. The activities are associated with the morphology of the developing digestive tract. Amylase activity increases before the first feeding, followed by a decreasing and then a rather constant level. Lipase activity remains low during the larvae and juvenile periods. Alkaline phosphatase activity increases gradually. This reflects the development of brush border membranes of enterocytes. |
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| Keywords: | Takifugu rubripes larvae juvenile digestive enzyme |
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