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Volume 34 Issue 3
May  2015
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Effects of temperature,light intensity and nutrient condition on the growth and hemolytic activity of six species of typical ichthyotoxic algae

  • Received Date: 2014-10-21
    Accepted Date: 2015-01-12
  • Effects of temperature (15,25 and 30℃),light intensity (20,60 and 100 mol/m2/s),nitrogen and phosphorus ratio (1:1; 1:16; 1:128) on hemolytic toxin production of six species of ichthyotoxic algae were studied under laboratory conditions.The results showed that the hemolytic activities of the ichthyotoxic algae in different growth phases were significantly different (p0.05). Chattonella marina,C.ovata,Karenia mikimotoi and Heterosigma akakshiwo exhibited a higher hemolytic activity in exponential phase and a lower hemolytic activity in decline phase.However,Phaeocystis globosa and Prymnesium parvum reached the highest hemolytic activity in stationary phase,and the lowest hemolytic activity of the two algae was detected in exponential phase.The physical environmental factors and nutrition conditions of algae culture also had great effects on the hemolytic activity.The hemolytic activity of single algal cell changed obviously under different conditions of light intensity,temperature,nitrogen and phosphorus limitation.The hemolytic activities of the six algae were positively correlated with light intensities.Except for P.globosa,the hemolytic activities of the other five ichthyotoxic algae showed an increasing trend in temperature range of 15~30℃.Nitrogen and phosphorus limitation promoted the product of hemolytic toxins.
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  • [1] 郭 皓,林凤翱,刘永健,等.近年来我国海域多发性赤潮生物种类以及赤潮风险指数分级预警方法[J].海洋环境科学,2014,33(1):94-98.[2]刘洁生,彭喜春,杨维东.营养胁迫下球形棕囊藻(Phaeocystis globosa Scherffel)的生长行为及溶血活性[J].生态学报,2006,26(3):780-785.[5]齐雨藻.中国南海赤潮研究[M].广州:广东经济出版社,2008.[6]彭喜春,刘洁生,杨维东.赤潮藻毒素生物合成研究进展[J].热带亚热带植物学报,2006,14(1):81-86.[8]刘望鹏,黄 娟,杨维东,等.营养盐对海洋卡盾藻生长与产毒的影响[J].生态毒理学报,2010,5(3):394-401.[10]江 涛,王 锐,吴 霓,等.海洋卡盾藻(香港株)溶血活性特征研究[J].环境科学,2011,32(10):2920-2925.[11]彭颖慧,刘洁生,李宏业,等.赤潮藻溶血活性测定标准的建立[J].卫生研究,2009,38(6):653-656.[13]YASUMOTO T,UNDERDAL B,AUNE T,et al.Screening for hemolytic and ichthyotoxic components of Chrysochromulina polylepis and Gyrodinium aurolum from Norwegian coastal waters[M].New York:Elsevier Science Publications,1990:436-442.[14]郭 瑾,杨维东,刘洁生,等.温度、盐度和光照对球形棕囊藻生长和产毒的影响研究[J].环境科学学报,2007,27(8):1341-1346.[20]BRUYANT F,RYAN C M,NORMANDEAU C,et al.Changes in the haemolytic properties of Heterosigma akashiwo (Raphidophyceae) during phosphate starvation[C]//ASLO Summer Meeting 2005:A Pilgrimage through Global Aquatic Sciences.Santiago de Compostela (abstract).
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Effects of temperature,light intensity and nutrient condition on the growth and hemolytic activity of six species of typical ichthyotoxic algae

  • 1. Research Center of Harmful Algae and Marine Biology; Key Laboratory of Eutrophic Water and Harmful Algae Blooms Control and Mitigation, Guangdong High Education Office, Jinan University, Guangzhou 510632, China

Abstract: Effects of temperature (15,25 and 30℃),light intensity (20,60 and 100 mol/m2/s),nitrogen and phosphorus ratio (1:1; 1:16; 1:128) on hemolytic toxin production of six species of ichthyotoxic algae were studied under laboratory conditions.The results showed that the hemolytic activities of the ichthyotoxic algae in different growth phases were significantly different (p0.05). Chattonella marina,C.ovata,Karenia mikimotoi and Heterosigma akakshiwo exhibited a higher hemolytic activity in exponential phase and a lower hemolytic activity in decline phase.However,Phaeocystis globosa and Prymnesium parvum reached the highest hemolytic activity in stationary phase,and the lowest hemolytic activity of the two algae was detected in exponential phase.The physical environmental factors and nutrition conditions of algae culture also had great effects on the hemolytic activity.The hemolytic activity of single algal cell changed obviously under different conditions of light intensity,temperature,nitrogen and phosphorus limitation.The hemolytic activities of the six algae were positively correlated with light intensities.Except for P.globosa,the hemolytic activities of the other five ichthyotoxic algae showed an increasing trend in temperature range of 15~30℃.Nitrogen and phosphorus limitation promoted the product of hemolytic toxins.

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