Nitrogen and Phosphorus Budget of a Polyculture System of Sea Cucumber(Apostichopus japonicus), Jellyfish(Rhopilema esculenta) and Shrimp(Fenneropenaeus chinensis)

作     者：LI Junwei DONG Shuanglin GAO Qinfeng ZHU Changbo 

作者机构：Key Laboratory of Mariculture of Ministry of Education of China Ocean University of China Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization of Ministry of Agriculture of ChinaSouth China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2014年第13卷第3期

页      面：503-508页

核心收录：

学科分类：0710[理学-生物学] 090801[农学-水产养殖] 0908[农学-水产] 0707[理学-海洋科学] 08[工学] 09[农学] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0835[工学-软件工程] 081202[工学-计算机软件与理论] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Key R & D Program (2011BAD13B03) National Marine Public Welfare Project of China (200905020) 

主　　题：polyculture nitrogen budget phosphorus budget Apostichopus japonicus Rhopilema esculenta Fenneropenaeus chinensis 

摘      要：The nitrogen(N) and phosphorus(P) budget and the ecological efficiency of a polyculture system of sea cucumber(Apostichopus japonicus), jellyfish(Rhopilema esculenta) and shrimp(Fenneropenaeus chinensis) were studied in a cofferdam, 120.2 ha in size. The nutrients were supplied by spring tide inflow. In total, 139600 kg N yr-1 and 9730 kg P yr-1 input to the system; while 118900 kg N yr-1 and 2840 kg P yr-1 outflowed from the system concurrently, thus the outflow was 85.7%(N) and 29.2%(P) of inflow. The production of N and P was 889.5 kg yr-1 and 49.28 kg yr-1(sea cucumber) and 204 kg yr-1 and 18.03 kg yr-1(jellyfish and shrimp), respectively. The utilization rate of N and P by polycultured animals was 7.8‰ and 6.9‰, respectively, 21.9% and 38% higher than that of monocultured sea cucumber. Our results indicated that the polyculture system was an efficient culture system of animals and a remediation system of coastal environment as well; it scavenged 14.3% and 70.8% of N and P, respectively. Such an ecological efficiency may be improved further by increasing either the stocking density or the size of sea cucumber or both.