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

doi:10.11978/2020154

Abstract

Abstract:

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.

Key words: Aureococcus anophagefferens, Skeletonema costatum, Chattonella marina, interspecies competition, algae bloom, temperature

CLC Number:

ZHENG Chengzhi, ZUO Liming, MA Wang, ZHU Qin, WANG Huohuo, LÜ Songhui, CHEN Heng, HUANG Kaixuan. Interactions among Aureococcus anophagefferens, Skeletonema costatum, and Chattonella marina under different temperatures[J].Journal of Tropical Oceanography, 2021, 40(3): 124-131.

Figures/Tables 4

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References 31

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处理	初始密度/(cells·mL^-1)			混合比例
处理	抑食金球藻	中肋骨条藻	海洋卡盾藻	混合比例
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

温度/℃	种名	处理	环境容纳量K/(×10⁵cells·mL^-1)	內禀增长率r	生长拐点T_p/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

Interactions among Aureococcus anophagefferens, Skeletonema costatum, and Chattonella marina under different temperatures

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