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平潭海域夜光藻对几种饵料藻的利用与生长

张海艳 李晓东 杨桂琴 路玮静 常阳 王紫阳

张海艳,李晓东,杨桂琴,等. 平潭海域夜光藻对几种饵料藻的利用与生长[J]. 海洋学报,2022,44(8):133–141 doi: 10.12284/hyxb2022156
引用本文: 张海艳,李晓东,杨桂琴,等. 平潭海域夜光藻对几种饵料藻的利用与生长[J]. 海洋学报,2022,44(8):133–141 doi: 10.12284/hyxb2022156
Zhang Haiyan,Li Xiaodong,Yang Guiqin, et al. Different growth of red Noctiluca scintillans from Pingtan coast waters feeding on several diet algae[J]. Haiyang Xuebao,2022, 44(8):133–141 doi: 10.12284/hyxb2022156
Citation: Zhang Haiyan,Li Xiaodong,Yang Guiqin, et al. Different growth of red Noctiluca scintillans from Pingtan coast waters feeding on several diet algae[J]. Haiyang Xuebao,2022, 44(8):133–141 doi: 10.12284/hyxb2022156

平潭海域夜光藻对几种饵料藻的利用与生长

doi: 10.12284/hyxb2022156
基金项目: 国家自然科学基金(42106203);平潭科技研究院科技创新项目(PT2021002)。
详细信息
    作者简介:

    张海艳(1998-),女,云南省弥勒市人,从事平潭夜光藻藻华形成机制相关的研究。E-mail:2484313403@qq.com

    通讯作者:

    李晓东,男,副教授,主要研究有害藻华形成机制及对海洋生态环境及水产养殖业的毒性效应与机制。E-mail:lixiaodong11@163.com

  • 中图分类号: X55;Q949.2

Different growth of red Noctiluca scintillans from Pingtan coast waters feeding on several diet algae

  • 摘要: 夜光藻(Noctiluca scintillans)藻华是我国近海常见的生态灾害,其暴发机制尚不明确。为探究营养条件在其形成机制中的作用,本文分析了几种常见饵料藻与同海域硅藻培养下夜光藻的种群增长,同时探究模拟海水混合与营养盐水平对其种群增长的影响。结果发现,不同饵料藻培养下,夜光藻种群增长有着显著差异,其中亚心形扁藻(Platymonas subcordiformis)组中夜光藻的平均增长率为(0.151±0.001)d−1,远高于其他饵料藻。海水混合对夜光藻种群增长有一定的促进作用,模拟海水混合时,部分实验组中夜光藻增长率显著高于静置实验组,其中微小海链藻(Thalassiosira minima)培养下的夜光藻种群增长率为(0.136±0.001)d−1,远高于除亚心形扁藻以外的其他实验组。随着营养盐水平的增加,与亚心形扁藻共培养的夜光藻种群增长出现明显的先增强后减弱的趋势,拟合结果表明,其种群增长符合Boltzmann模型,并与营养盐水平相关。结果表明,海水混合与营养盐输入引起的平潭海域微藻的快速繁殖在当地夜光藻藻华的形成机制中可能起着重要的作用。
  • 图  1  夜光藻采样站位

    Fig.  1  The sampling position of Noctiluca scintillans

    图  2  静置条件下不同藻类培养的夜光藻种群增长

    Fig.  2  Population growth of Noctiluca scintillans feeding by different algae in a standing situation

    图  3  海水混合条件下不同藻类培养的夜光藻种群增长

    Fig.  3  Population growth of Noctiluca scintillans feeding by different algal in a seawater mixing simulated situation

    图  4  夜光藻和亚心形扁藻在不同营养条件下的种群增长曲线

    Fig.  4  Population growth curves of Noctiluca scintillans and Platymonas subcordiformis under different nutritional conditions

    图  5  夜光藻种群动态拟合

    Fig.  5  Fitting of population dynamics of Noctiluca scintillans

    表  1  不同培养条件下夜光藻种群平均增长率

    Tab.  1  Mean growth rate of Noctiluca scintillans feeding by different algal in standing and mixing simulated situation

    饵料藻类静置条件下增长率/d−1海水混合条件下增长率/d−1
    亚心形扁藻0.151±0.001d0. 152±0d
    冷冻亚心形扁藻0.106±0.005b0.105±0.004b
    球等鞭金藻0.003±0.003a0.101±0.002b
    三角褐指藻0.013±0.006a0.101±0.004b
    微小海链藻0.005±0.005a0.137±0.001c
    小球藻−0.002±0.003a−0.002±0.003a
    骨条藻0.108±0.003b0.105±0.002b
    空白对照(灭菌海水)0.003±0.003a0.000±0.005a
    注:上标字母不同表示差异显著,p<0.05为显著。
    下载: 导出CSV

    表  2  夜光藻种群动态Boltzmann拟合参数

    Tab.  2  Parameters of Boltzmann fitting on population dynamics of Noctiluca scintillans

    f/2组f/4组f/8组f/16组f/32组对照组
    K/(cells·mL−1)44.61±4.11164.56±5.43184.65±3.19103.74±2.3877.22±2.2946.53±1.61
    t0/d12.67±0.8811.05±0.317.79±0.177.19±0.206.96±0.316.48±0.36
    dt3.23±0.532.56±0.231.73±0.151.12±0.171.71±0.271.57±0.31
    R20.929 30.979 10.983 30.961 90.942 90.912 5
    下载: 导出CSV

    表  3  夜光藻种群动态Boltzmann拟合参数与营养盐稀释倍数的拟合

    Tab.  3  Fitting of dilution ratio with parameters of Boltzmann fitting on population dynamics of Noctiluca scintillans

    拟合方式拟合参数R2
    K高斯B=41.00±6.69xc=0.36±0.01w=0.32±0.02A=72.76±5.760.994 0
    t0线性a=6.57±0.39b=6.57±0.82 0.941 7
    dt线性c=1.38±0.18d=1.90±0.38 0.863 0
    下载: 导出CSV
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  • 收稿日期:  2021-11-19
  • 修回日期:  2022-04-13
  • 网络出版日期:  2022-04-28
  • 刊出日期:  2022-08-15

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