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热带海洋学报

• • 上一篇    

三亚湾夏季原核生物的微型浮游动物摄食率与病毒裂解率*

李春山1,2, 张建东3, 龙超3, 龙丽娟1, 黄思军1   

  1. 1.     中国科学院热带海洋生物资源与生态重点实验室,中国科学院南海海洋研究所,广东 广州 510301;

    2.     中国科学院大学,北京 100049;

    3.     海洋环境工程中心,中国科学院南海海洋研究所,广东 广州 510301;

  • 收稿日期:2025-01-07 修回日期:2025-03-05 接受日期:2025-03-18
  • 通讯作者: 黄思军
  • 基金资助:

    国家自然科学基金项目(42176116，42306134， 41576126);国家科技基础资源调查专项(2023FY100803); 广东省自然科学基金(2017A030306020); 中国科学院南海海洋研究所“南海新星”项(NHXX2019ST0101)

Microzooplankton Grazing Rates and Viral Lysis Rates on Prokaryotes in Summer Sanya Bay*

LI Chunshan1, 2, ZHANG Jiandong3, LONG Chao3, LONG Lijuan1, HUANG Sijun1   

  1. 1.      Key Laboratory of Tropical Marine Bio-resources and Ecology，South China Sea Institute of Oceanology, Chinese  Acedemy of Sciences,Guangzhou 510301,China;

    2.      University of Chinese Academy of Sciences, Beijing 100049,China;

    3.      Marine Environmental Engineering Center, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China


  • Received:2025-01-07 Revised:2025-03-05 Accepted:2025-03-18
  • Supported by:

     National Natural Science Foundation of China (42176116，42306134，41576126); Science & Technology Fundamental Resources Investigation Program (2023FY100803); Natural Science Foundation of Guangdong Province (2017A030306020); Rising Star Foundation of the South China Sea Institute of Oceanology (NHXX2019ST0101)

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摘要： 在三亚湾开展的为期一个月的研究中，我们研究了原核生物的浮游动物摄食率与病毒裂解率的时间序列变化。结果表明，原核生物的生长率（μ）高于病毒裂解率（mv）和浮游病毒摄食率（mg）之和，平均值为2.69±0.66d-1，范围为1.61~3.87d-1；病毒裂解率平均值为0.77±0.34d-1，范围为0.31~1.21d-1；浮游动物摄食率平均值为0.83±0.58d-1，变化范围为0.12~1.88d-1。原核生物的病毒裂解碳量（Ci(v)）和浮游动物摄食碳量（Ci(g)）相当，均达到~106 fg·C·mL-1。浮游病毒裂解率与浮游动物摄食率呈负相关关系，裂解百分比（Pi(v)）与摄食百分比（Pi(g)）同样也呈负相关；然而，病毒裂解碳量和浮游动物摄食碳量呈显著正相关。原核生物的病毒裂解作用和微型浮游动物摄食作用的强度在时间序列上的变化幅度较大，而总体上裂解作用和摄食作用对原核生物死亡率的贡献相当，共同组成了原核生物碳流向的两个重要途径。

关键词: 微微型浮游生物, 原核生物, 原核生物碳流向, 病毒裂解作用, 浮游动物摄食作用

Abstract: During a month-long study in Sanya Bay, we examined the temporal dynamics of zooplankton grazing and viral lysis rates in prokaryotes. Findings revealed that prokaryotic growth rate (μ) surpassed the combined rates of viral lysis (mv) and zooplankton grazing (mg), averaging 2.69±0.66d-1 (1.61~3.87d-1). The viral lysis rate averaged 0.77±0.34d-1 (0.31~1.21d-1), while the zooplankton grazing rate averaged 0.83±0.58d-1 (0.12~1.88d-1). Viral lysis carbon (Ci(v)) and zooplankton grazing carbon (Ci(g)) in prokaryotes were equivalent, each approximating 106 fg·C·mL-1. Negative correlations were observed between viral lysis rate and zooplankton grazing rate, as well as between viral lysis percentage (Pi(v)) and zooplankton grazing percentage (Pi(g)). Conversely, a significant positive correlation was noted between viral lysis carbon and zooplankton grazing carbon. Viral lysis and microzooplankton grazing exhibited substantial variability over the study period, with both processes contributing equally to prokaryotic mortality, highlighting their significance in prokaryotic carbon flux.

Key words: Picophytoplankton, Prokaryotes, Carbon flux, Viral lysis, Zooplankton grazing