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海洋科学  2012 

温度、盐度和光照对一株有毒利玛原甲藻生长的影响研究

, PP. 19-24

Keywords: 利玛原甲藻(Prorocentrum,lima,Dodge),腹泻性贝毒,赤潮,温度,盐度,光照强度

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Abstract:

针对一株利玛原甲藻(ProrocentrumlimaDodge),应用小鼠生物测试法和高效液相色谱-质谱联用分析方法对其毒性和毒素成分进行了初步分析,并通过多因子实验,研究了温度、盐度和光照强度等环境因子对利玛原甲藻生长的影响。分析结果显示,这株利玛原甲藻能够产生大田软海绵酸(Okadaicacid,OA)和鳍藻毒素1(Dinophysistoxin1,DTX1)等腹泻性贝毒(DiarrheticShellfishPoison,DSP)。多因素方差分析结果表明,在实验条件范围内(温度为18、21和24oC;盐度为28、32和36;光照强度为2500、5000和7500lx),利玛原甲藻的生长受盐度影响显著(P<0.05),而温度和光照强度对利玛原甲藻的生长没有显著影响。温度和光照强度及温度和盐度之间的交互作用对利玛原甲藻的比增长率也有显著影响(P<0.05)。根据实验结果,这株利玛原甲藻生长的最适条件为:温度18oC,盐度28,光照强度7500lx。

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