| 凡纳滨对虾幼虾低盐度粗养水体养殖容量的研究 |
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| 引用本文： | 谢剑,戴习林,臧维玲,王家伟,丁福江.凡纳滨对虾幼虾低盐度粗养水体养殖容量的研究[J].海洋渔业,2010,32(3). |
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| 作者姓名： | 谢剑 戴习林 臧维玲 王家伟 丁福江 |
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| 作者单位： | 1. 上海海洋大学水产与生命学院,上海,201306
2. 上海申漕特种水产开发公司,上海,201376 |
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| 基金项目： | 上海市科委科技攻关重点项目，上海市教育委员会重点学科建设项目 |
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| 摘 要： | 试验设计6个凡纳滨对虾幼虾养殖密度:10、20、30、40、50、60 ind/m2,通过比较60 d养殖周期内的水环境因子、幼虾生长状况与消化酶活性,分析研究凡纳滨对虾幼虾低盐度粗养水体的养殖容量。结果表明:各试验组水质均符合凡纳滨对虾幼虾生长要求,单位水体载虾量主要影响pH、非离子氨氮(NH3-Nm)、溶解氧(DO)等水化指标;不同试验组水体pH、NH3-Nm含量、DO含量、总氮(TN)含量差异极显著(P0.01),浊度、总磷(TP)含量差异显著(P0.05);不同试验组对虾中肠腺蛋白酶活性差异显著(P0.05),表现出单位水体载虾量越高,对虾体内蛋白消化酶活性和氮利用率越低的规律,DO是低盐度粗养水体养殖容量的主要限制因子。综合各项评价指标,得到本试验条件下,凡纳滨对虾幼虾低盐度粗养水体的最佳养殖容量为46.0 g/m3或32.2 g/m2(322 kg/hm2)。
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| 关 键 词： | 凡纳滨对虾 养殖密度 水质 评价指标 养殖容量 |
Study on carrying capacity of Litopenaeus vannamei juveniles in extensive culture water with low salinity |
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| XIE Jian,DAI Xi-lin,ZANG Wei-ling,WANG Jia-wei,DING Fu-jiang.Study on carrying capacity of Litopenaeus vannamei juveniles in extensive culture water with low salinity[J].Marine Fisheries,2010,32(3). |
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| Authors: | XIE Jian DAI Xi-lin ZANG Wei-ling WANG Jia-wei DING Fu-jiang |
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| Abstract: | In order to study the carrying capacity of Litopenaeus vannamei juveniles in extensive culture water with low salinity,the experiment was conducted at six stocking densities: 10,20,30,40,50,60 ind/m2,and the water quality of the shrimp ponds,the growth of the Litopenaeus vannamei juveniles and the activity of digestive enzymes during the 60-day culture cycle were nanlyzed.Results showed that: water quality of all test groups could meet the growth demand of Litopenaeus vannamei,the shrimp capacity in each unit-mass water mainly affected the water quality in pH,NH3-Nm and DO.The turbidity and total phosphorus(TP) showed significant differences in different stocking groups(P<0.05),while the non-ionic ammonia(NH3-Nm),dissolved oxygen(DO) content,total nitrogen(TN) and pH showed extremely significant differences(P<0.01).DO was the main limiting factor for the carrying capacity.On the other hand,the protease activity of shrimp's mid-gut gland in different experimental groups also showed significant differences(P<0.05).With the capacity in unit-mass water growing up,the activity of protease and nitrogen utilization went down.Combining the assessment indicators,it came to the conclusion that: in extensive culture water with low salinity,the optimal carrying capacity of Litopenaeus vannamei juveniles was 46.0 g/m3 or 32.2 g/m2(322 kg/hm2). |
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| Keywords: | Litopenaeus vannamei stocking density water quality assessment indicators carrying capacity |
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