• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polar biology >Feeding of dominant zooplankton in Prydz Bay, Antarctica, during austral spring/summer: food availability and species responses
【24h】

Feeding of dominant zooplankton in Prydz Bay, Antarctica, during austral spring/summer: food availability and species responses

机译：春季/夏季南极普里兹湾主要浮游动物的摄食：食物供应和物种响应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Information on the food and predation of zoo-plankton species is essential for an improved understanding of zooplankton community dynamics of the Southern Ocean. Feeding of dominant zooplankton species at locations across the neritic, slope and oceanic regions of Prydz Bay, Antarctica, was investigated with incubation experiments during austral spring/summer of 2009/2010 to identify the response of dominant copepods and krill to different feeding environments. Results showed distinct spatial and temporal variations in ingestion and filtration of predominant cope-pods and krill. In late spring, Calanoides acutus was inactive and the ingestion rate was only 1.30 μgC/ind/day. During early summer, a diatom bloom was in progress at station IS21, showing a peak biomass of Thalassiosira spp. and Fragilaria spp. Daily ingestion rates of Euphausia crystallomphias, C. acutus, Metridia gerlachei and Ctenocalanus citer were relatively high. By contrast, copepod ate predominantly ciliates in slope and oceanic regions where microplankton biomass were lower (＜20 μgC/L). During late summer, microplankton of neritic regions, mainly composed of nano-sized Pseudo-nitzschia spp. and ciliates, was less than 10 ugC/L. C. acutus incubated in neritic regions mainly ate ciliates. The total microplankton biomass was lower (＜5 ugC/L) and predominated by Pseudo-nitzschia spp. in slope regions north of Fram Bank, and daily ingestion rates of incubated copepods were less than 2.5 ugC/ind. Our results clearly demonstrated that copepods and krill had flexible feeding strategies to cope with temporally and spatially changing food availability in Prydz Bay. Meanwhile, ciliates appeared to represent an important carbon source for zooplankton, especially in regions with lower food concentrations.
机译：有关浮游动物种类的食物和捕食的信息对于增进对南大洋浮游动物群落动态的了解至关重要。在2009/2010年春季/夏季的南方进行了孵化实验，调查了南极Prydz湾的划界，斜坡和海洋区域位置的浮游动物主要种类的摄食，以确定主要co足类和磷虾对不同摄食环境的反应。结果显示，主要上等豆荚和磷虾的摄入和过滤过程在空间和时间上存在明显差异。在春季末期，Cal藜没有活动，摄食率仅为1.30μgC/ ind / day。初夏期间，IS21站正在进行硅藻绽放，显示Thalassiosira spp的生物量达到峰值。和草莓属。 Euphausia crystallomphias，C。acutus，Metridia gerlachei和Ctenocalanus citer的每日摄入量相对较高。相比之下，co足类主要在微浮游生物量较低（＜20μgC/ L）的斜坡和海洋区域纤毛虫。在夏末，微薄的浮游生物区域，主要由纳米级的拟南芥属组成。和纤毛虫，低于10 ugC / L。在尖刺区域温育的a鱼主要吃纤毛虫。浮游植物的总生物量较低（＜5 ugC / L），以假单胞菌属为主。在Fram Bank以北的斜坡地区，孵化的pe足类动物的每日摄入率低于2.5 ugC / ind。我们的结果清楚地表明，co足类和磷虾具有灵活的饲养策略，可以应对普里兹湾随时间和空间变化而变化的食物供应。同时，纤毛虫似乎是浮游动物的重要碳源，尤其是在食物浓度较低的地区。

著录项

  • 来源
    《Polar biology》 |2013年第11期|1701-1707|共7页
  • 作者

    Guang Yang; Chaolun Li; Song Sun; Cuixia Zhang; Qing He;

  • 作者单位

    Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, 7 Naihai Road, Qingdao 266071, People's Republic of China;

    Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, 7 Naihai Road, Qingdao 266071, People's Republic of China;

    Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, 7 Naihai Road, Qingdao 266071, People's Republic of China;

    Tianjin Key Laboratory of Marine Resource and Chemistry, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China;

    College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, People's Republic of China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Zooplankton; Feeding strategy; Food availability; Prydz Bay; Antarctica;

    机译：浮游动物;喂养策略;粮食供应;普里兹湾南极洲;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号