有害赤潮生物球形棕囊藻对卤虫的毒性研究

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Abstract

The acute toxicities of tow strains of Phaeocystis globosa scherffel isolated respectively from the coastal waters of Hong Kong (HK) in June 1998 and Shantou (ST) of Guangdong Province in October 1997 were studied under laboratory conditions. The results showed that two strains were pernicious to Artemia sinica. 1) Media Lethal concentration (MLC) for HK strain of logarithmic phase was 2.9×10⁵ cell·mL^-1.Median Lethal Time (MLT) was 20.91 hours. 2) MLC was 9.89×10⁶ cell·mL^-1 for ST strain of decline phase, and MLT was 26.62 hours. 3) The cell-free liquids of tow stains of Phaeocystis globosa scherffel were also pernicious to Artemia sinica, but the adverse effect of them were not so remarkable as whole cells culture medias. MLT was 26.56 hours for cell-free liquids of HK strain, and 28.02 hours for ST strain. MLC for them respectively were 7.1×10⁵ cell·mL^-1 and 1.457×10⁷ cell·mL^-1.The experimental results showed that the toxicities of cell and cell-free liquids of HK strain were more remarkable than ST strain, and the toxicities of cell liquids were more acute than cell-free liquids.

Key words： Harmful algae bloom Phaeocystis globosa scherffel Artemia sinica Acute toxicity

Received: 25 February 2005

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	WEI Wei
	JIANG Tian-jiu

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WEI Wei,JIANG Tian-jiu. Studies on the toxicity of tow strains Phaeocystis globosa scherffeto to Artemia sinica[J]. , 2005, 24(1): 38-41.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2005/V24/I1/38

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