Determination of mechanism of red tide extinction and suppression of cyst germination by reagents

伪chatnella sp.是一种新的赤潮浮游生物，对其进行了分离和特性测定。同时建立了囊肿DNA的检测方法。利用该方法对山川湾沉积物中囊泡浓度的季节变化进行了估计。对于抑制赤潮的措施，过碳酸钠和氢氧化镁对包囊萌发是有效的。它们对消灭营养细胞同时有效。特别明显的是，过碳酸钠在0.1g/l的情况下，在30分钟内就能有效熄灭。

As a novel red tide plankton, Pseudochattnella sp. was isolated and its characteristics was determined. At the same time, detection methods of cyst DNA was established. By using this methods, seasonal change of the cyst concentration in the sediment of Yamakawa bay was estimated. For red tide suppression measures, sodium percarbonate and magnesium hydroxide have been performed to be effective for cyst germination. They were simultaneously effective for extinction of the vegetative cell. It is particularly clear that sodium percarbonate are effective for the extinction under 0.1g/l within 30 minutes.