...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Feeding rates and prey selectivity of planktonic decapod larvae in the Western English Channel
【24h】

Feeding rates and prey selectivity of planktonic decapod larvae in the Western English Channel

机译：西英吉利海峡浮游十足类幼虫的摄食率和猎物选择性

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

Meroplankton are seasonally important contributors to the zooplankton, particularly at inshore sites, yet their feeding ecology is poorly known relative to holoplank-ton. While several studies have measured feeding in decapod larvae, few studies have examined the feeding rates of decapod larvae on natural prey assemblages throughout the reproductive season. We conducted 8 feeding experiments with Necora puber, Liocarcinus spp. and Upogebia spp. zoea larvae collected from the L4 monitoring site off Plymouth (50°15.00′N, 4°13.02′W) during spring-summer 2009 and 2010. This period spanned moderate-to-high food availability (0.5-1.6 μg chl-a L~(-1)), but a great range in food composition with small cells ＜20 μm dominating in 2010. Daily rations averaged 17, 60 and 22 % of body C for the 3 respective decapod species. Clearance rates differed according to prey type, and all 3 decapod genera showed evidence of selection of dinoflagellates. Importantly, small cells including nano- and pico-plankton were ingested, this being demonstrated independently by flow cytometric analysis of the feeding experiments and molecular analysis. PCR-based analysis of the haptophyte portion of the diet revealed ingestion of Isochrysis galbana by decapod larvae in the bottle incubations and Isochrysis galbana and Phae-ocystis globosa by decapod larvae collected directly from the field. This study has shown that pico- and nano-sized plankton form an important supplement to the diverse and variable diet of decapod larvae.
机译：浮游植物是季节性浮游动物的重要贡献者，特别是在近海地区，但是相对于浮游生物来说，它们的摄食生态学知之甚少。尽管有几项研究测量了十足足幼虫的摄食量，但很少有研究检查了整个生殖季节中十足足幼虫对天然猎物组合的摄食率。我们对Necora pubic Liocarcinus spp进行了8次喂养实验。和Upogebia spp。在2009年春季和2010年春季从普利茅斯（50°15.00′N，4°13.02′W）的L4监测点收集的zoea幼虫。这一时期涵盖了中到高的食物供应量（0.5-1.6μgchl-a L 〜（-1）），但在2010年食物组成的变化范围很大，其中小于20μm的小细胞占主导地位。三种十足动物的平均日进食量分别占C体的17％，60％和22％。清除率因猎物类型的不同而不同，所有三个十足动物属均显示出选择鞭毛的证据。重要的是，摄入了包括纳米浮游生物和微微浮游生物在内的小细胞，这可以通过喂养实验的流式细胞术分析和分子分析独立地证明。基于PCR的日粮触觉植物部分分析显示，瓶孵化中的十足幼虫摄入了等鞭金藻，直接从田间采集的十足幼虫消化了球藻和球藻。这项研究表明，皮克级和纳米级浮游生物构成了十足足幼虫多样化饮食的重要补充。

著录项

  • 来源
    《Marine biology》 |2014年第11期|2479-2494|共16页
  • 作者

    Elaine S. Fileman; Penelope K. Lindeque; Rachel A. Harmer; Claudia Halsband; Angus Atkinson;

  • 作者单位

    Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, Devon PL1 3DH, UK;

    Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, Devon PL1 3DH, UK;

    Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, Devon PL1 3DH, UK;

    Akvaplan-niva AS, Fram Centre, 9296 Tromsoe, Norway;

    Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, Devon PL1 3DH, UK;

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

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