| 粘土矿物对尖刺拟菱形藻多列型生长和藻毒素产生的影响 |
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| 引用本文： | 俞志明,D V Subba Rao.粘土矿物对尖刺拟菱形藻多列型生长和藻毒素产生的影响[J].海洋与湖沼,1998,29(1):47-52. |
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| 作者姓名： | 俞志明 D V Subba Rao |
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| 作者单位： | 中国科学院海洋研究所!青岛,266071,BedfordInstituteofOceanography,POBox1006,DartmouthNS,CanadaB2Y4A2 |
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| 基金项目： | 国家自然科学基金!A64951121 |
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| 摘 要： | 于１９９４年１－７月在加拿大贝德福（Ｂｅｄｆｏｒｄ）海洋研究所进行粘土矿物（ｈａｌｌｏｙｓｉｔｅ）对尖刺拟菱形藻（Ｐｓｕｅｄｏｎｉｔｚｓｃｈｉａｐｕｎｇｅｎｓｆ．ｍｕｌｔｉｓｅｒｉｅｓ）生长和藻毒素软骨藻酸（ＤｏｍｏｉｃＡｃｉｄ,下简称ＤＡ）生成的影响研究,在Ｇｏｍｐｅｒｔｚ菌类生长方程的基础上,建立了尖刺拟菱形藻生长速率模型,得到各实验条件下的藻细胞最大生长速率,结果表明,粘土矿物对藻细胞的“遮
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| 关 键 词： | 粘土矿物 赤潮藻 培养 藻毒素 菱形藻 红潮 |
| 收稿时间： | 1996/3/10 0:00:00 |
| 修稿时间： | 1997/9/15 0:00:00 |
IMPACT OF HALLOYSITE ON GROWTH OF PSUEDONITZSCHIA PUNGENS F. MULTISERIES AND PRODUCTION OF ALGAL TOXIN |
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| YU Zhi-ming and D V Subba Rao.IMPACT OF HALLOYSITE ON GROWTH OF PSUEDONITZSCHIA PUNGENS F. MULTISERIES AND PRODUCTION OF ALGAL TOXIN[J].Oceanologia Et Limnologia Sinica,1998,29(1):47-52. |
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| Authors: | YU Zhi-ming and D V Subba Rao |
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| Abstract: | The impact of clay (halloysite) on growth of a red tide organism, Psuedonitzschiapungens f multiseries, and the production of domoic acid was studied in Bedford Institute ofOceanography, Canada, in January to July 1994. Based on the Gompeta equation of bacteria growth,a growth rate model of Psuedonitzschia pungens f multiseries was estabished and maximum growthrates of algal cells were obtained under various experimental conditions. The results show that thegrowth of the experimental species is consistent with Gompertz model, but the degree of consistencydecreases with the increase of clay concentrations. The clay particles can cause a "mutual shading"effect on the growth of algal cells, which may reduce the maximum growth rate; and the decreasein the rate is enlarged with the increase of clny concentirations. The effect of the clay on domoicacid prodoction is insignificant even can be neglected if clay concentrations are below 10mg / 1. Ifclay concentrations are higher than this value, then the domoic acid production decreases with theincrease of clay concentrations. Thus, the clay can inhibit domoic acid production with a maximumichibition efficiency of more than 30%. The reason for such an effect may be a change in nutrientcontents in the mediuxn due to clay addition and a decrease in photosynthsis due to the "mutualshading" effect The results, together with those of the previous studies reported elsewhere, indicarethat the clay can not only coagulate the red tide organisms to prevent it from breaking out, but alsocan decrease the production of some algal toxins. Hence, the use of the clay is a method with avast range of appications to the contrl of the harmful red tide. |
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| Keywords: | Clays Red tide organisms Culture Algal toxin |
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