1983年11月,天津西郊鸭淀水库渔场亲鱼池的草、鲢鱼越冬亲鱼,在两周内全部死光,按鱼病学调查方法对刚死的鱼进行系统检查,未发现可疑病原及症状,而通过浮游生物检查,发现水中有大量的舞三毛金藻(Prymnesium saltans Massart),藻密度为每升水4,000万个,在亲鱼池取水样进行室内试验,证明对鱼类有强烈毒性,说明死鱼原因是由舞三毛金藻毒素所引起。经了 In November 1983, the grass carp and silver carp of winter broodstock in the duck pond reservoir fishery in Tianjin’s western suburbs died out in two weeks, and the dead fish were systematically inspected according to the fish disease survey method. No suspicious pathogens were found Symptoms, and through the plankton examination revealed a large amount of Prymnesium saltans Massart in the water with an algal density of 40 million per liter of water. Laboratory tests were conducted in the broodstock to prove that there was a strong toxicity to fish, indicating The reason for the dead fish is caused by the dancing Mie algae toxin. After that