Snell Terry W
Division of Science and Mathematics, University of Tampa, 33606, Tampa, Florida, USA.
Oecologia. 1980 Sep;46(3):343-346. doi: 10.1007/BF00346262.
Observation in natural populations of the rotifer Asplanchna girodi suggested blue-green algae may have toxic effects on rotifers. The blue-greens Anabaena flos-aquae and Lyngbya sp. were isolated from a pond in Central Florida along with three electrophoretically identified genotypes of A. girodi. When tested Anabaena had marked effect on the reproductive rate of A. girodi and the effect was different among genotypes. Likewise, Lyngbya also depressed rotifer reproduction, but required an order of magnitude higher concentration to produce the same effects as Anabaena. The toxicity of these algae was corroborated by mouse bioassays. Results clearly show these blue-greens have the capacity to differentially reduce reproductive rates of rotifer genotypes. Because of this capability blue-greens could play an important role in the ecology of natural selection in rotifer populations.
对轮虫巨头簇轮虫自然种群的观察表明，蓝藻可能对轮虫有毒害作用。从佛罗里达州中部的一个池塘中分离出了水华鱼腥藻和鞘丝藻这两种蓝藻，以及巨头簇轮虫的三种经电泳鉴定的基因型。经测试，鱼腥藻对巨头簇轮虫的繁殖率有显著影响，且不同基因型间的影响存在差异。同样，鞘丝藻也会抑制轮虫繁殖，但产生与鱼腥藻相同效果所需的浓度要高出一个数量级。小鼠生物测定证实了这些藻类的毒性。结果清楚地表明，这些蓝藻有能力不同程度地降低轮虫基因型的繁殖率。由于这种能力，蓝藻可能在轮虫种群自然选择的生态学中发挥重要作用。
