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小三毛金藻属金藻门、金藻纲、金胞藻目,顶生鞭毛3条,中间一条较短,另外两条比胞体长,两侧各有一个板状色素体位于胞体前端1/3～2/3处,白糖素一个或多个位于细胞后端。此藻具有广温性(4℃～28℃)、广盐性(2‰～11‰),一年四季都可形成危害。以前春秋发病较多,现在盛夏季节也频繁暴发,已无明显季节之分,发病一般都在水体较瘦且容易形成小三毛金藻优势种的池塘。小三毛金藻对鱼的危害是由它产生的一种鱼毒素引起。据国外Yarin,J和Hestrin,s.(1961)报道,鱼类不能被单独的小三毛金藻鱼毒素杀死,但由于各种辅助因子(Ca~(2+)、Mg~(2+)等)的作用,鱼类对鱼毒素的毒性变得高度敏感。Shilo,M.(1981)提出,敏感种群中毒的严重
Chlamydomonas reinhardtii Chrysophyta, Chrysophyceae, Chrysopa albicans, top flagella 3, the middle of a shorter, the other two longer than the cell body, on each side of a plate-shaped pigment body located in the front of the cell body 1/3 ~ 2 / At 3, one or more of the glucagon is located at the back of the cell. This algae has wide temperature (4 ℃ ~ 28 ℃), wide salt (2 ‰ ~ 11 ‰), all year round can form a hazard. Before spring and autumn more incidence, and now summer season also frequent outbreaks, there is no obvious seasonal points, the incidence is generally thin and easy to form the water ponds of the dominant species of Small Mushroom. Chlamys farreri on fish hazards caused by a fish toxin it caused. According to foreign reports Yarin, J and Hestrin, s. (1961), fish can not be killed by the small Mint toxins alone, but due to various cofactors (Ca2 +, Mg2 +, etc.) The fish’s toxicity to fish toxins becomes highly sensitive. Shilo, M. (1981) suggested that the susceptible population is severely poisoned