不同养殖密度对脊尾白虾生长和水体氨氮含量的影响  

Effects of density stress on the growth of Exopalaemon carinicauda and the ammonia nitrogen content in aquaculture water during culturing

作　　者：李志辉[1,2,3] 马杭柯 张培 徐莞媛[1,2,3] 孙金秋 阎斌伦 张庆起 高焕[1,2,3] LI Zhi-hui;MA Hang-ke;ZHANG Pei;XU Wan-yuan;SUN Jin-qiu;YAN Bing-lun;ZHANG Qing-qi;GAO Huan(Jiangsu Key Laboratory of Marine Biotechnology,College of Marine Life and Fisheries,Huaihai Institute of Technology, Lianyungang 222005,China;Marine Resource Development Institute of Lianyungang Jiangsu,Lianyungang 222005, China;Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm,Nanjing 210014,China;Ganyu-jiaxin Aquaculture Limited Company of Lianyungang,Lianyungang 222100,China)

机构地区：[1]江苏省海洋生物技术重点实验室,淮海工学院海洋生命与水产学院,连云港222005 [2]江苏省海洋资源开发研究院,连云港222005 [3]江苏省农业种质资源保护与利用平台,南京210014 [4]连云港赣榆佳信水产开发有限公司,连云港222100

出　　处：《海洋渔业》2018年第5期581-586,共6页Marine Fisheries

基　　金：连云港市产学研合作项目(CXY1517)；江苏省高等学校自然科学研究重大项目(17KJA240001)；江苏省“六大人才高峰”创新人才团队资助项目(2016-HYGC-CXTD-004)；江苏省研究生实践创新计划(SJLX16_0673)

摘　　要：为探讨不同养殖密度对脊尾白虾(Exopalaemon carinicauda)生长、存活以及水体氨氮含量变化规律的影响,设置4个密度梯度(600尾·m^(-3)、900尾·m^(-3)、1 200尾·m^(-3)、1 500尾·m^(-3))对脊尾白虾进行养殖实验,测定脊尾白虾存活率、特定生长率及水体氨氮含量等指标。结果显示,4个养殖密度(600尾·m^(-3)、900尾·m^(-3)、1 200尾·m^(-3)、1 500尾·m^(-3))条件下水体氨氮含量均值分别为0.61 mg·L^(-1)、0.85 mg·L^(-1)、1.15 mg·L^(-1)、1.49 mg·L^(-1),即随养殖密度升高氨氮含量逐渐增加,且不同养殖密度条件下水体氨氮含量随养殖周期的延长呈现升高的趋势。4个养殖密度(600尾·m^(-3)、900尾·m^(-3)、1 200尾·m^(-3)、1 500尾·m^(-3))条件下脊尾白虾的特定生长率分别为5.40%、4.55%、4.01%及3.63%,存活率分别为86.11%、86.67%、81.82%及72.22%,特定生长率和存活率均与养殖密度成负相关关系,且两个指标各组之间大部分有显著性差异(P<0.05)。研究结果可为探索脊尾白虾的最适工厂化养殖条件提供理论指导。Stocking density is one of the most important factors affecting the growth of aquatic organisms and water quality.To clarify the effects of different stocking densities on the growth and contents of ammonia nitrogen during E.carinicauda culturing,four stocking density groups:600,900,1 200 and 1 500 ind·m-3 were set in this study.The experiment period was one month.The specific growth rate,survival rate and concentration of ammonia nitrogen were detected during the experiment.The results showed that the average concentration of ammonia nitrogen for the groups of 600,900,1 200 and 1 500 ind·m-3 were 0.61 mg·L-1,0.85 mg·L-1,1.15 mg·L-1 and 1.49 mg·L-1,respectively.The results discovered that the concentration of ammonia nitrogen tended to increase with the rising of stocking density and elongation of stocking time.Additionally,the specific growth rates of E.carinicauda for the groups of 600,900,1 200 and 1 500 ind·m-3 were 5.40%,4.55%,4.01%and 3.63%,respectively.And the survival rates were 86.11%,86.67%,81.82%and 72.22%,respectively.The results showed that both the specific growth rate and survival rate of E.carinicauda reduced with the increasing of stocking density,and there were significant differences among each group(P<0.05).The results provided a theoretical basis for the exploration of the optimum conditions for the industial farming of E.carinicauda.Meanwhile,the water quality during intensive factory farming of E.carinicauda should be monitored by real-time and stocking density should be regulated rationally.

关 键 词：脊尾白虾 养殖密度 生长 氨氮 

分 类 号：S968.22[农业科学—水产养殖]