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 

机构地区：[1]Key Laboratory of Mariculture of Ministry of Education of China, Ocean University of China [2]Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization of Ministry of Agriculture of China,South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences

出　　处：《Journal of Ocean University of China》2014年第3期503-508,共6页中国海洋大学学报（英文版）

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

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.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.

关 键 词：POLYCULTURE nitrogen budget phosphorus budget Apostichopus japonicus Rhopilema esculenta Fenneropenaeus chinensis 

分 类 号：S968.9[农业科学—水产养殖] TP316.7[农业科学—水产科学]