2016年秋季南海中部微型浮游动物类群组成及其摄食研究  

Species composition and grazing of microzooplankton in central South China Sea in autumn of 2016

作　　者：谢志超 林琳[1] 肖雅元[1] 刘永[1] 李纯厚[1] XIE Zhichao1, 2, LIN Lin1, XIAO Yayuan1, LIU Yong1, LI Chunhou1(1. Key Laboratory of South China Sea Fishery Resources Exploitation ＆ Utilization, Ministry of Agriculture; Guangdong Provin-cial Key Laboratory of Fishery Ecology and Environment; South China Sea Fisheries Research Institute, Chinese Academy of Fish-ery Sciences, Guangzhou 510300, China; 2. Marine Fishery College of Zhejiang Ocean University, Zhoushan 316022, China)

机构地区：[1]中国水产科学研究院南海水产研究所农业部南海渔业资源开发利用重点实验室广东省渔业生态环境重点实验室,广东广州510300 [2]浙江海洋大学水产学院,浙江舟山316022

出　　处：《南方水产科学》2018年第3期40-48,共9页South China Fisheries Science

基　　金：公益性行业(农业)科研专项经费项目(201403008);农业部财政重大专项(NFZX2013)

摘　　要：为探究南海中部海域初级生产力通过微型浮游动物向高营养级传递的效率,于2016年10月在南海中部海域的10个站位采集表层水样,分析鉴定了微型浮游动物的丰度及种类组成,同时运用现场稀释法研究了浮游植物的生长率和微型浮游动物对浮游植物和初级生产力的摄食压力。结果显示:1)共鉴定出微型浮游动物21种,其中主要类群为无壳纤毛虫,丰度为120~1 300个·L^(–1);2)多数站位微型浮游动物摄食率大于浮游植物生长率,浮游植物生长率为–0.92~1.16 d^(–1),微型浮游动物摄食率为0.17~1.58 d^(–1);微型浮游动物对浮游植物现存量的摄食压力为15.6%~79.4%,而对初级生产力的摄食压力为–593.2%~187.7%。与其他海区结果相比,南海中部微型浮游动物对浮游植物的摄食压力处于中等水平。To understand the species composition and grazing of microzooplankton in the central South China Sea（CSCS）, we collected the surface water at ten sites in CSCS in October, 2016, and analyzed the abundance and species composition of their microzooplankton, as well as estimated the growth rate of phytoplankton and grazing pressure of microzooplankton on phytoplankton by dilution technique. A total of 21 microzooplankton species were identified, and the microzooplankton abundance varied from 120 ind·L^（–1） to 1 300 ind·L^（–1）. The mean values of phytoplankton growth rate and microzooplankton grazing rate were – 0.92 –1.16 d^（–1） and0.17 –1.58 d^（–1）, respectively. Compared with the results of other sea areas in China, the grazing pressure of microzooplankton in CSCS was at a medium level. The mean values of grazing pressure on phytoplankton standing crop and grazing pressure on primary production were 15.6% –79.4% and –593.2% –187.7%, respectively. The grazing pressure on the primary productivity at most stations was over 100%, indicating that microzooplankton has obvious inhibitory effect on the growth of phytoplankton and plays an important role in primary production and secondary production of energy transfer process in CSCS.

关 键 词：微型浮游动物 摄食压力 稀释法 南海中部 

分 类 号：Q178.53[生物学—水生生物学]