| JIANG Zengjie,DU Meirong,FANG Jinghui,GAO Yaping,LI Jiaqi,ZHAO Li,FANG Jianguang. 2017. Size fraction of phytoplankton and the contribution of natural plankton to the carbon source of Zhikong scallop Chlamys farreri in mariculture ecosystem of the Sanggou Bay. Acta Oceanologica Sinica, 36(10):97－105 |
| Size fraction of phytoplankton and the contribution of natural plankton to the carbon source of Zhikong scallop Chlamys farreri in mariculture ecosystem of the Sanggou Bay |
| 桑沟湾养殖生态系统浮游植物的粒径结构及浮游生物对栉孔扇贝碳需求的贡献 |
| Received:March 31, 2016 |
| DOI：10.1007/s13131-017-0970-x |
| Key words:phytoplankton picoplankton protist microbial food web Chlamys farreri |
| 中文关键词: 浮游植物 微微型浮游生物 原生动物 微食物网 栉孔扇贝 |
| 基金项目: |
| Author Name | Affiliation | E-mail | | JIANG Zengjie | Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China | | | DU Meirong | Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | FANG Jinghui | Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | GAO Yaping | Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | LI Jiaqi | Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | ZHAO Li | Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China | | | FANG Jianguang | Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China | fangjg@ysfri.ac.cn |
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| Abstract: |
| The biomass and size fraction of phytoplankton in terms of chlorophyll a (Chl a) was measured during four cruises conducted in April, July, October 2013 and January 2014 in mariculture area, the Sanggou Bay, China. Results show that total Chl a levels in the surface seawater of the Sanggou Bay generally range from 0.10 to 20.46 μg/L, with an average value of 2.13 μg/L. Nano-phytoplankton was the most important size-fraction and accounted for about 65.1% of total Chl a. In order to evaluate the importance of the "protozoan trophic link" for energy transfer from the microbial loop to filter-feeding feeders, Zhikong scallop Chlamys farreri was then offered a natural planktonic community as potential prey. Results show that scallops obtained carbon source from natural plankton with the rate of 11 033.05 μg/(g·d). Protists (nanoflagellates and ciliates) were the dominant source of carbon retained by scallop (48.78%). The microbial loop provided 58.45% of the carbon source for farmed scallops. These results indicate that the microbial loop represent a valuable trophic resource in mariculture system of the Sanggou Bay. |
| 中文摘要: |
| 基于2013年4，7，10月和2014年1月的大面调查数据探讨了桑沟湾养殖生态系统浮游植物的粒径结构及生物量时空变化特征。结果表明，桑沟湾海域表层Chl a浓度年变化范围为0.10~20.46 μg/L，平均浓度2.13 μg/L。浮游植物粒径结构以微型浮游植物（nano-phytoplankton）为主，贡献率为65.1%。利用模拟现场流水法探讨了原生动物在能量从微食物环向滤食性贝类传递的重要纽带作用。结果表明，栉孔扇贝通过摄食浮游生物的碳需求为11033.05 μg/（g·d），原生动物（鞭毛虫和纤毛虫）是主要的贡献者，占栉孔扇贝碳需求量的48.78%。微食物环可满足养殖的栉孔扇贝约58.45%的碳需求量。研究结果揭示了微食物环在桑沟湾养殖生态系统中的重要性。 |
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