不同温度下抑食金球藻、中肋骨条藻和海洋卡盾藻间的相互作用
郑承志和左丽明为共同第一作者
郑承志(1994—), 男, 广东省湛江市人, 硕士, 海洋生物学, email: ; |
左丽明(1980—), 女, 河北省沧州市人, 高级工程师, 海洋地质学, email: 。 |
Copy editor: 林强
收稿日期: 2020-12-29
要求修回日期: 2021-02-09
网络出版日期: 2021-02-10
基金资助
国家自然科学基金(41876173)
河北省自然资源厅项目(454-0503-JBN-XCLS)
版权
Interactions among Aureococcus anophagefferens, Skeletonema costatum, and Chattonella marina under different temperatures
Copy editor: LIN Qiang
Received date: 2020-12-29
Request revised date: 2021-02-09
Online published: 2021-02-10
Supported by
National Natural Science Foundation of China(41876173)
Foundation of Department of Natural Resources of Heibei Province(454-0503-JBN-XCLS)
Copyright
本文选取抑食金球藻(Aureococcus anophagefferens)、中肋骨条藻(Skeletonema costatum)和海洋卡盾藻(Chattonella marina)三种藻在20℃和25℃下进行单种、两种或三种藻间的培养实验, 探究在不同温度下藻种间的相互作用和竞争优势。单种培养结果显示抑食金球藻和中肋骨条藻对温度25℃敏感, 其环境容量(K)被显著降低; 而海洋卡盾藻的內禀增长率(r)在25℃下显著升高, 但K保持不变。在共培养中, 海洋卡盾藻在20℃下因抑食金球藻添加致死, 但在25℃处理下其K值上升120%。虽然中肋骨条藻的r在两个温度下均受海洋卡盾藻添加的促进, 但其K值从20℃下的上升43%转变为25℃下的降低48%。温度变化对于抑食金球藻和中肋骨条藻共培养的结果无明显影响, 中肋骨条藻的K均上升40%, 而抑食金球藻的K值均下降60%~70%。结果说明, 种间竞争除了共培养藻固有的相互作用关系因素外, 也受到微藻间温度适应性差异的影响。在20℃条件下三种藻混合, 抑食金球藻K的抑制率达到最高为79%, 而中肋骨条藻K的促进率达到最高为108%, 这可能表明三者之间的相互作用存在协同效应。
郑承志 , 左丽明 , 马旺 , 朱琴 , 王火火 , 吕颂辉 , 陈亨 , 黄凯旋 . 不同温度下抑食金球藻、中肋骨条藻和海洋卡盾藻间的相互作用[J]. 热带海洋学报, 2021 , 40(3) : 124 -131 . DOI: 10.11978/2020154
Mono-, bi-, and tri-algal cultures were applied to Aureococcus anophagefferens, Skeletonema costatum, and Chattonella marina under two temperatures of 20℃ and 25℃, to investigate species-specific interaction and competition in different temperatures. Single cultures showed the environmental carry capacity (K) for A. anophagefferens and S. costatum were significantly reduced by increased temperature, indicating they are sensitive to rising temperature. In contrast, the inherent growth rate (r) for C. marina significantly increased at 25℃ whereas K remained the same as that at 20℃. In contrast to the death under A. anophagefferens addition at 20℃, K of C. marina increased 120% at 25℃. Although r of S. costatum was promoted by C. marina addition at both temperatures, its K showed from 43% increase to 48% decrease from 20℃ to 25℃. The change of temperature did not influence the results of co-culture of S. costatum and A. anophagefferens with 40% increases and 60%-70% decreases of K at both temperatures. The results of bi-cultures indicated that interspecies competition is not only influenced by fixed interaction relationship of co-cultured species, but also by difference of algal temperature adaptability. In tri-algal cultures at 20℃, the inhibition rate of A. anophagefferens and the stimulation rate of S. costatum both reached the highest of 79% and 108%, respectively, which probably illuminated a synergistic effect within three algal interaction.
表1 不同混合处理的初始密度和混合比例Tab. 1 Initial cell intensities and mixture ratios of various combination cultures |
处理 | 初始密度/(cells·mL-1) | 混合比例 | ||
---|---|---|---|---|
抑食金球藻 | 中肋骨条藻 | 海洋卡盾藻 | ||
单种 | 20×105 | 2.5×105 | 2.5×103 | N/A |
混合1 | 40×105 | 2.5×105 | N/A | 16∶1 |
混合2 | N/A | 2.5×105 | 750 | 33∶1 |
混合3 | 40×105 | N/A | 750 | 530∶1 |
混合4 | 25×105 | 2.5×105 | 750 | 333∶33∶1 |
注: N/A表示细胞未参与共培养 |
表2 不同温度和混合处理下三种藻的生长参数Tab. 2 Parameters of growth for three algae species under various temperature and combination treatments |
温度/℃ | 种名 | 处理 | 环境容纳量K/(×105 cells·mL-1) | 內禀增长率r | 生长拐点Tp/d |
---|---|---|---|---|---|
20 | 抑食金球藻 | 单种 | 161.63±3.40 | 0.24±0.02 | 8.54±0.63 |
混合1 | 48.09±15.50 | 0.29±0.07 | 23.83±4.76 | ||
混合3 | 83.31±71.28 | 0.24±0.07 | 13.46±3.34 | ||
混合4 | 34.72±4.80 | 0.43±0.01 | 46.00±0.85 | ||
海洋卡盾藻 | 单种 | 0.25±0.01 | 0.26±0.02 | 7.77±0.68 | |
混合2 | 0.09±0.02 | 0.20±0.02 | 13.2±1.11 | ||
混合3 | 0.07±0.04 | 0.23±0.06 | 49.00±7.67 | ||
混合4 | 0.10±0.02 | 0.14±0.02 | 18.50±1.32 | ||
中肋骨条藻 | 单种 | 16.66±0.53 | 0.45±0.02 | 4.04±0.15 | |
混合1 | 23.28±3.04 | 0.45±0.03 | 10.20±0.46 | ||
混合2 | 23.84±1.99 | 0.52±0.02 | 9.12±0.25 | ||
混合4 | 34.73±4.79 | 0.43±0.01 | 11.77±0.3 | ||
25 | 抑食金球藻 | 单种 | 65.21±4.93 | 0.63±0.17 | 6.89±1.78 |
混合1 | 27.10±3.57 | 0.19±0.02 | 19.42±1.34 | ||
混合3 | 19.57±2.68 | 0.24±0.03 | 11.42±1.03 | ||
混合4 | 18.57±6.40 | 0.17±0.04 | 13.00±2.44 | ||
海洋卡盾藻 | 单种 | 0.25±0.01 | 0.40±0.03 | 5.10±0.35 | |
混合2 | 0.05±0.01 | 0.15±0.02 | 10.07±1.2 | ||
混合3 | 0.55±0.50 | 0.20±0.02 | 21.85±3.32 | ||
混合4 | 0.13±0.03 | 0.15±0.02 | 18.00±1.73 | ||
中肋骨条藻 | 单种 | 13.37±0.33 | 0.47±0.01 | 3.23±0.07 | |
混合1 | 18.70±2.56 | 0.49±0.02 | 8.88±0.27 | ||
混合2 | 6.99±0.39 | 0.52±0.02 | 6.75±0.18 | ||
混合4 | 14.94±1.22 | 0.63±0.10 | 7.98±0.64 |
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