The Virgilio Uribe Rowing Canal in Xochimilco, Mexico City has cyanobacterial blooms throughout the year, often of the genus Microcystis. Here we evaluated the demographic responses of Moina macrocopa in the presence of cyanotoxins obtained by freezing and sonication of blooms collected in June (2017), September (2017) and March (2018). Acute toxicity tests (LC₅₀) showed that the median lethal concentration, on Moina macrocopa was 1.56, 1.30 and 2.56 μg/L, in June, September and March, respectively. The life table of M. macrocopa was done using 5% and 10% of the LC_50, fed on Scenedesmus acutus (0.5 × 10⁶ cells/mL) with four replicates per treatment. We found that cyanotoxins reduced the survival and fecundity of Moina macrocopa. The population growth rates ranged from 0.27 and 0.49 d⁻¹ for the blooms collected in June, 0.38 and 0.52 d⁻¹ for those of September and 0.42 and 0.52 d⁻¹ for the blooms in March. We found that most of the cyanobacterial strains of the rowing canal are toxic and may have adverse effects on humans exposed to them daily.

墨西哥城霍奇米尔科的Virgilio Uribe赛艇运河全年都有蓝藻繁殖，通常是微囊藻属。在这里，我们评估了在通过冷冻和超声处理6月（2017年），9月（2017年）和3月（2018年）采集的大花而获得的蓝藻毒素存在下，Moina macrocopa的人口响应。急性毒性试验（LC ₅₀）显示，6月，9月和3月，莫伊纳macro的平均致死浓度分别为1.56、1.30和2.56μg/ L。用co鱼（Scendesmus acutus，0.5×10 ^6）饲喂的LC _50的5％和10％，完成了大果念珠菌的寿命表。细胞/ mL），每次处理重复四次。我们发现，氰毒素降低了Moina macrocopa的存活和繁殖力。6月采集的大花的人口增长率范围为0.27和0.49 d - ¹，9月采集的大花的人口增长率为0.38和0.52 d - ¹，3月采集的大花的人口增长率为0.42和0.52 d ^-1。我们发现，赛艇运河的大多数蓝细菌菌株均具有毒性，并且可能会对每天接触它们的人类产生不利影响。