| CO2加富培养对鼠尾藻克制赤潮异弯藻效果的影响 |
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| 引用本文： | 侯 迎,周 斌,唐学玺,张永生.CO2加富培养对鼠尾藻克制赤潮异弯藻效果的影响[J].海洋科学,2013,37(1):23-28. |
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| 作者姓名： | 侯 迎 周 斌 唐学玺 张永生 |
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| 作者单位： | 1. 中国海洋大学 海洋生命学院生态学研究室, 山东 青岛 266003
2. 中国海监荣成市大队, 山东 荣成264300 |
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| 基金项目： | 高等学校博士学科点专项科研基金新教师类资助课题(2011013220025); 高等学校基本科研业务费青年教师科研专项基金(201213007) |
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| 摘 要： | 采用实验生态学的方法,研究了大型海藻鼠尾藻(Sargassum thunbergii)对赤潮微藻中肋骨条藻(Skeletonema costatum)的克生效应及其对 CO2加富的响应变化.结果表明,正常培养的鼠尾藻新鲜组织、干粉末和水溶性抽提液能够导致中肋骨条藻的细胞密度显著降低(P<0.05), CO2加富培养的鼠尾藻新鲜组织、干粉末和水溶性抽提液能够更加明显地抑制中肋骨条藻种群生长(P<0.01).实验结果证实鼠尾藻对中肋骨条藻具有克生效应,而 CO2加富培养引起了鼠尾藻对中肋骨条藻克生效应的变化,使其对中肋骨条藻生长的抑制作用显著加强.正常培养的鼠尾藻培养水过滤液能够显著抑制中肋骨条藻的生长(P<0.05),而 CO2加富培养的鼠尾藻培养水过滤液对中肋骨条藻的生长没有表现出明显的影响(P>0.05),因此推测 CO2加富培养可能改变了鼠尾藻对中肋骨条藻克生作用的方式,作用方式由分泌克生物质转变为细胞直接接触转递.
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| 关 键 词： | 鼠尾藻(Sargassum thunbergii) 中肋骨条藻(Skeletonema costatum) 克生效应 CO2 加富 |
| 收稿时间： | 2011/12/1 0:00:00 |
| 修稿时间： | 2012/2/11 0:00:00 |
Influence of CO2 enrichment on the allelopathic effect of Sargassum thunbergii on Skeletonema costatum |
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| HOU Ying,ZHOU Bin,TANG Xue-xi,ZHANG Yong-sheng.Influence of CO2 enrichment on the allelopathic effect of Sargassum thunbergii on Skeletonema costatum[J].Marine Sciences,2013,37(1):23-28. |
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| Authors: | HOU Ying ZHOU Bin TANG Xue-xi ZHANG Yong-sheng |
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| Institution: | 1.Laboratory of Ecology,College of Marine Life Science,Ocean University of China,Qingdao 266003,China;2.Marine Surveillance Team of Rongcheng County,Rongcheng 264300,China) |
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| Abstract: | The allelopathic effect of Sargassum thunbergii on Skeletonema costatum and its response to CO2 enrichment were investigated by an experimental ecology method. Results showed that, under normal conditions, fresh tissue, dry power and aqueous extracts of S. thunbergii resulted in remarkably reductions in cell density of S. costatum (P<0.05). In addition, the fresh tissue, dry power and aqueous extracts of S. thunbergii, which were cultured under CO2 enrichment conditions, led to more significant decreases in cell density of S. costatum (P<0.01). Under normal conditions, the culture media filtrate of S. thunbergii drastically inhibited the growth of S. costatum (P<0.05), while that of S. thunbergii which were cultured under CO2 enrichment conditions did not exhibit significantly inhibitive effect on S. costatum (P>0.05). Therefore, it was speculated that the mediating mechanism of the allelopathic effect might be changed by CO2 enrichment, from the secreted allelopathic substances to direct cell contact. |
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| Keywords: | Sargassum thunbergii Skeletonema costatum Allelopathic Effects CO2 enrichment |
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