Study on the combined effects of temperature, salinity and irradiance on the growth of dinoflagellate <i>Alexandrium tamarense</i>

YAN Tian; ZHOU Ming-Jiang; QIAN Pei-yuan

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YAN Tian, ZHOU Ming-Jiang, QIAN Pei-yuan. Study on the combined effects of temperature, salinity and irradiance on the growth of dinoflagellate Alexandrium tamarense[J]. Haiyang Xuebao, 2002, 24(2): 114-120.

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YAN Tian, ZHOU Ming-Jiang, QIAN Pei-yuan. Study on the combined effects of temperature, salinity and irradiance on the growth of dinoflagellate Alexandrium tamarense[J]. Haiyang Xuebao, 2002, 24(2): 114-120.

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Study on the combined effects of temperature, salinity and irradiance on the growth of dinoflagellate Alexandrium tamarense

1.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
2.
Biology Department, Hong Kong University of Sciences and Technology, Hong Kong, China

Received Date: 2000-08-03
Rev Recd Date: 2001-01-21

Abstract

Abstract

Three-factors experiment design is used to study the combined effects of temperature,salinity and irradiance on the growth of an important PSP(paralytic shellfish poisoning) producing species A.tamarense(a strain isolated from the Daya Bay,Uuangdong,China).The results show that growth of A.tamarense is significantly different among temperatures(12,19,25,32℃),irradiance(0.02×10¹⁶,0.08×10¹⁶,0.3×10¹⁶,1.6×10¹⁶ s^-1/cm²) and salinity(10,18,25,30,35).There are interactive effects between any two of and among all three physical factors on the growth of A.tamarense.The optimal growth condition of A.tamarense is 19℃,30 and 1.6×10¹⁶s^-1/cm² with growth rate of 0.25d during exponential growth phase.Therefore,A.tamarense is more likely to bloom under relatively high temperature and high illumination in spring and autumn,and this species is able to grow in ocean area of relatively high salinity.Red tide formation mechanism and possible distribution of this species in China are also discussed.To protect mariculture industry and human health,more attention should be paid to this toxic species.
- Alezandrium tamarense,
- harmful algal bloom,
- growth

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References(21)

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